| #----------------------------------------------------- |
| # Magic/TCL design kit for SKYWATER sky130A |
| #----------------------------------------------------- |
| # Tim Edwards |
| # Revision 1 ALPHA 9/10/2020 |
| #----------------------------------------------------- |
| |
| if {[catch {set TECHPATH $env(PDK_ROOT)}]} { |
| set TECHPATH /foss/pdk |
| } |
| if [catch {set PDKPATH}] {set PDKPATH ${TECHPATH}/sky130A} |
| set PDKNAME sky130A |
| # "sky130" is the namespace used for all devices |
| set PDKNAMESPACE sky130 |
| puts stdout "Loading sky130A Device Generator Menu ..." |
| |
| # Initialize toolkit menus to the wrapper window |
| |
| global Opts |
| namespace eval sky130 {} |
| |
| # Set the window callback |
| if [catch {set Opts(callback)}] {set Opts(callback) ""} |
| set Opts(callback) [subst {sky130::addtechmenu \$framename; $Opts(callback)}] |
| |
| # if {![info exists Opts(cmdentry)]} {set Opts(cmdentry) 1} |
| |
| # Set options specific to this PDK |
| set Opts(hidelocked) 1 |
| set Opts(hidespecial) 0 |
| |
| # Wrap the closewrapper procedure so that closing the last |
| # window is equivalent to quitting. |
| if {[info commands closewrapper] == "closewrapper"} { |
| rename closewrapper closewrapperonly |
| proc closewrapper { framename } { |
| if {[llength [windownames all]] <= 1} { |
| magic::quit |
| } else { |
| closewrapperonly $framename |
| } |
| } |
| } |
| |
| # Remove maze router layers from the toolbar by locking them |
| tech lock fence,magnet,rotate |
| |
| namespace eval sky130 { |
| namespace path {::tcl::mathop ::tcl::mathfunc} |
| |
| set ruleset [dict create] |
| |
| # Process DRC rules (magic style) |
| |
| dict set ruleset poly_surround 0.08 ;# Poly surrounds contact |
| dict set ruleset diff_surround 0.06 ;# Diffusion surrounds contact |
| dict set ruleset gate_to_diffcont 0.145 ;# Gate to diffusion contact center |
| dict set ruleset gate_to_polycont 0.275 ;# Gate to poly contact center |
| dict set ruleset gate_extension 0.13 ;# Poly extension beyond gate |
| dict set ruleset diff_extension 0.29 ;# Diffusion extension beyond gate |
| dict set ruleset contact_size 0.17 ;# Minimum contact size |
| dict set ruleset via_size 0.17 ;# Minimum via size |
| dict set ruleset metal_surround 0.08 ;# Local interconnect overlaps contact |
| dict set ruleset sub_surround 0.18 ;# Sub/well surrounds diffusion |
| dict set ruleset diff_spacing 0.28 ;# Diffusion spacing rule |
| dict set ruleset poly_spacing 0.21 ;# Poly spacing rule |
| dict set ruleset diff_poly_space 0.075 ;# Diffusion to poly spacing rule |
| dict set ruleset diff_gate_space 0.20 ;# Diffusion to gate poly spacing rule |
| dict set ruleset metal_spacing 0.23 ;# Local interconnect spacing rule |
| dict set ruleset mmetal_spacing 0.14 ;# Metal spacing rule (above local interconnect) |
| dict set ruleset res_to_cont 0.20 ;# resistor to contact center |
| dict set ruleset res_diff_space 0.20 ;# resistor to guard ring |
| } |
| |
| #----------------------------------------------------- |
| # magic::addtechmenu |
| #----------------------------------------------------- |
| |
| proc sky130::addtechmenu {framename} { |
| global Winopts Opts |
| |
| # Check for difference between magic 8.1.125 and earlier, and 8.1.126 and later |
| if {[catch {${framename}.titlebar cget -height}]} { |
| set layoutframe ${framename}.pane.top |
| } else { |
| set layoutframe ${framename} |
| } |
| |
| # List of devices is long. Divide into two sections for active and passive deivces |
| magic::add_toolkit_menu $layoutframe "Devices 1" pdk1 |
| |
| magic::add_toolkit_command $layoutframe "nmos (MOSFET)" \ |
| "magic::gencell sky130::sky130_fd_pr__nfet_01v8" pdk1 |
| magic::add_toolkit_command $layoutframe "pmos (MOSFET)" \ |
| "magic::gencell sky130::sky130_fd_pr__pfet_01v8" pdk1 |
| |
| magic::add_toolkit_separator $layoutframe pdk1 |
| magic::add_toolkit_command $layoutframe "n-diode" \ |
| "magic::gencell sky130::sky130_fd_pr__diode_pw2nd_05v5" pdk1 |
| magic::add_toolkit_command $layoutframe "p-diode" \ |
| "magic::gencell sky130::sky130_fd_pr__diode_pd2nw_05v5" pdk1 |
| magic::add_toolkit_command $layoutframe "photodiode" \ |
| "magic::gencell sky130::sky130_fd_pr__photodiode" pdk1 |
| |
| magic::add_toolkit_separator $layoutframe pdk1 |
| magic::add_toolkit_command $layoutframe "MOS varactor" \ |
| "magic::gencell sky130::sky130_fd_pr__cap_var_lvt" pdk1 |
| magic::add_toolkit_separator $layoutframe pdk1 |
| |
| magic::add_toolkit_command $layoutframe "NPN 1.0 x 1.0" \ |
| "magic::gencell sky130::sky130_fd_pr__rf_npn_05v5_W1p00L1p00" pdk1 |
| magic::add_toolkit_command $layoutframe "NPN 1.0 x 2.0" \ |
| "magic::gencell sky130::sky130_fd_pr__rf_npn_05v5_W1p00L2p00" pdk1 |
| magic::add_toolkit_command $layoutframe "PNP 0.68 x 0.68" \ |
| "magic::gencell sky130::sky130_fd_pr__rf_pnp_05v5_W0p68L0p68" pdk1 |
| magic::add_toolkit_command $layoutframe "PNP 3.4 x 3.4" \ |
| "magic::gencell sky130::sky130_fd_pr__rf_pnp_05v5_W3p40L3p40" pdk1 |
| |
| magic::add_toolkit_separator $layoutframe pdk1 |
| |
| magic::add_toolkit_command $layoutframe "inductor 1" \ |
| "magic::gencell sky130::sky130_fd_pr__rf_test_coil1" pdk1 |
| magic::add_toolkit_command $layoutframe "inductor 2" \ |
| "magic::gencell sky130::sky130_fd_pr__rf_test_coil2" pdk1 |
| magic::add_toolkit_command $layoutframe "inductor 3" \ |
| "magic::gencell sky130::sky130_fd_pr__rf_test_coil3" pdk1 |
| |
| magic::add_toolkit_separator $layoutframe pdk1 |
| |
| magic::add_toolkit_command $layoutframe "substrate contact (1.8V)" \ |
| "sky130::subconn_draw" pdk1 |
| magic::add_toolkit_command $layoutframe "substrate contact (5.0V)" \ |
| "sky130::mvsubconn_draw" pdk1 |
| magic::add_toolkit_command $layoutframe "deep n-well region" \ |
| "sky130::deep_nwell_draw" pdk1 |
| magic::add_toolkit_command $layoutframe "mcon" \ |
| "sky130::mcon_draw" pdk1 |
| magic::add_toolkit_command $layoutframe "via1" \ |
| "sky130::via1_draw" pdk1 |
| magic::add_toolkit_command $layoutframe "via2" \ |
| "sky130::via2_draw" pdk1 |
| magic::add_toolkit_command $layoutframe "via3" \ |
| "sky130::via3_draw" pdk1 |
| magic::add_toolkit_command $layoutframe "via4" \ |
| "sky130::via4_draw" pdk1 |
| |
| |
| magic::add_toolkit_menu $layoutframe "Devices 2" pdk2 |
| |
| magic::add_toolkit_command $layoutframe "n-diff resistor (1.8V) - 120 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_nd" pdk2 |
| magic::add_toolkit_command $layoutframe "p-diff resistor (1.8V) - 197 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_pd" pdk2 |
| magic::add_toolkit_command $layoutframe "n-diff resistor (5.0V) - 114 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_nd__hv" pdk2 |
| magic::add_toolkit_command $layoutframe "p-diff resistor (5.0V) - 191 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_pd__hv" pdk2 |
| |
| magic::add_toolkit_command $layoutframe "poly resistor - 48.2 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_po" pdk2 |
| magic::add_toolkit_command $layoutframe "poly resistor - 319.8 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_high_po_0p35" pdk2 |
| magic::add_toolkit_command $layoutframe "poly resistor - 2000 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_xhigh_po_0p35" pdk2 |
| magic::add_toolkit_command $layoutframe "p-well resistor - 3050 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_iso_pw" pdk2 |
| magic::add_toolkit_separator $layoutframe pdk2 |
| |
| magic::add_toolkit_command $layoutframe "l1 metal resistor - 12.2 Ohm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_l1" pdk2 |
| magic::add_toolkit_command $layoutframe "m1 metal resistor - 125 mOhm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_m1" pdk2 |
| magic::add_toolkit_command $layoutframe "m2 metal resistor - 125 mOhm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_m2" pdk2 |
| magic::add_toolkit_command $layoutframe "m3 metal resistor - 47 mOhm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_m3" pdk2 |
| magic::add_toolkit_command $layoutframe "m4 metal resistor - 47 mOhm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_m4" pdk2 |
| magic::add_toolkit_command $layoutframe "m5 metal resistor - 29 mOhm/sq" \ |
| "magic::gencell sky130::sky130_fd_pr__res_generic_m5" pdk2 |
| |
| magic::add_toolkit_command $layoutframe "MiM cap - 2fF/um^2 (metal3)" \ |
| "magic::gencell sky130::sky130_fd_pr__cap_mim_m3_1" pdk2 |
| magic::add_toolkit_command $layoutframe "MiM cap - 2fF/um^2 (metal4)" \ |
| "magic::gencell sky130::sky130_fd_pr__cap_mim_m3_2" pdk2 |
| magic::add_toolkit_separator $layoutframe pdk2 |
| |
| magic::add_toolkit_command $layoutframe "vpp 11.5x11.7 m1-m4, li/m5 shield" \ |
| "magic::gencell sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldl1m5" pdk2 |
| magic::add_toolkit_command $layoutframe "vpp 11.5x11.7 m1-m2" \ |
| "magic::gencell sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield" pdk2 |
| magic::add_toolkit_command $layoutframe "vpp 8.6x7.8 m1-m2 l1 shield" \ |
| "magic::gencell sky130::sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1" pdk2 |
| magic::add_toolkit_command $layoutframe "vpp 4.4x4.6 m1-m2 l1 shield" \ |
| "magic::gencell sky130::sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1" pdk2 |
| |
| # Additional DRC style for routing only---add this to the DRC menu |
| ${layoutframe}.titlebar.mbuttons.drc.toolmenu add command -label "DRC Routing" -command {drc style drc(routing)} |
| |
| # Add SPICE import function to File menu |
| ${layoutframe}.titlebar.mbuttons.file.toolmenu insert 4 command -label "Import SPICE" -command {sky130::importspice} |
| ${layoutframe}.titlebar.mbuttons.file.toolmenu insert 4 separator |
| |
| # Add command entry window by default if enabled |
| if {[info exists Opts(cmdentry)]} { |
| set Winopts(${framename},cmdentry) $Opts(cmdentry) |
| } else { |
| set Winopts(${framename},cmdentry) 0 |
| } |
| if {$Winopts(${framename},cmdentry) == 1} { |
| addcommandentry $framename |
| } |
| } |
| |
| #---------------------------------------------------------------- |
| # Menu callback function to read a SPICE netlist and generate an |
| # initial layout using the SKYWATER sky130A gencells. |
| #---------------------------------------------------------------- |
| |
| proc sky130::importspice {} { |
| global CAD_ROOT |
| |
| set Layoutfilename [ tk_getOpenFile -filetypes \ |
| {{SPICE {.spice .spc .spi .ckt .cir .sp \ |
| {.spice .spc .spi .ckt .cir .sp}}} {"All files" {*}}}] |
| if {$Layoutfilename != ""} { |
| magic::netlist_to_layout $Layoutfilename sky130 |
| } |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::mcon_draw {{dir default}} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 0.17} { |
| puts stderr "Mcon width must be at least 0.17um" |
| return |
| } |
| if {$h < 0.17} { |
| puts stderr "Mcon height must be at least 0.17um" |
| return |
| } |
| suspendall |
| paint mcon |
| pushbox |
| if {($w < $h) || ($dir == "vert")} { |
| box grow e 0.03um |
| box grow w 0.03um |
| box grow n 0.06um |
| box grow s 0.06um |
| paint m1 |
| } else { |
| box grow n 0.03um |
| box grow s 0.03um |
| box grow e 0.06um |
| box grow w 0.06um |
| paint m1 |
| } |
| popbox |
| resumeall |
| } |
| |
| proc sky130::via1_draw {} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 0.26} { |
| puts stderr "Via1 width must be at least 0.26um" |
| return |
| } |
| if {$h < 0.26} { |
| puts stderr "Via1 height must be at least 0.26um" |
| return |
| } |
| suspendall |
| paint via1 |
| box grow n 0.05um |
| box grow s 0.05um |
| paint m2 |
| box grow n -0.05um |
| box grow s -0.05um |
| box grow e 0.05um |
| box grow w 0.05um |
| paint m1 |
| box grow e -0.05um |
| box grow w -0.05um |
| resumeall |
| } |
| |
| proc sky130::via2_draw {} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 0.28} { |
| puts stderr "Via2 width must be at least 0.28um" |
| return |
| } |
| if {$h < 0.28} { |
| puts stderr "Via2 height must be at least 0.28um" |
| return |
| } |
| suspendall |
| pushbox |
| paint via2 |
| box grow n 0.05um |
| box grow s 0.05um |
| paint m2 |
| popbox |
| pushbox |
| box grow n 0.025um |
| box grow s 0.025um |
| box grow e 0.05um |
| box grow w 0.05um |
| paint m3 |
| popbox |
| resumeall |
| } |
| |
| proc sky130::via3_draw {} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 0.32} { |
| puts stderr "Via3 width must be at least 0.32um" |
| return |
| } |
| if {$h < 0.32} { |
| puts stderr "Via3 height must be at least 0.32um" |
| return |
| } |
| suspendall |
| pushbox |
| paint via3 |
| box grow n 0.005um |
| box grow s 0.005um |
| box grow e 0.005um |
| box grow w 0.005um |
| paint m4 |
| popbox |
| pushbox |
| box grow e 0.05um |
| box grow w 0.05um |
| paint m3 |
| popbox |
| resumeall |
| } |
| |
| proc sky130::via4_draw {} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 1.18} { |
| puts stderr "Via3 width must be at least 1.18um" |
| return |
| } |
| if {$h < 1.18} { |
| puts stderr "Via3 height must be at least 1.18um" |
| return |
| } |
| suspendall |
| paint via4 |
| pushbox |
| box grow n 0.12um |
| box grow s 0.12um |
| box grow e 0.12um |
| box grow w 0.12um |
| paint m5 |
| popbox |
| resumeall |
| } |
| |
| proc sky130::subconn_draw {} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 0.17} { |
| puts stderr "Substrate tap width must be at least 0.17um" |
| return |
| } |
| if {$h < 0.17} { |
| puts stderr "Substrate tap height must be at least 0.17um" |
| return |
| } |
| suspendall |
| paint psc |
| pushbox |
| if {$w > $h} { |
| box grow e 0.08um |
| box grow w 0.08um |
| paint li |
| box grow e 0.04um |
| box grow w 0.04um |
| } else { |
| box grow n 0.08um |
| box grow s 0.08um |
| paint li |
| box grow n 0.04um |
| box grow s 0.04um |
| } |
| paint psd |
| popbox |
| resumeall |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::mvsubconn_draw {} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 0.17} { |
| puts stderr "Substrate tap width must be at least 0.17um" |
| return |
| } |
| if {$h < 0.17} { |
| puts stderr "Substrate tap height must be at least 0.17um" |
| return |
| } |
| suspendall |
| paint mvpsc |
| pushbox |
| if {$w > $h} { |
| box grow e 0.08um |
| box grow w 0.08um |
| paint li |
| box grow e 0.04um |
| box grow w 0.04um |
| } else { |
| box grow n 0.08um |
| box grow s 0.08um |
| paint li |
| box grow n 0.04um |
| box grow s 0.04um |
| } |
| paint mvpsd |
| popbox |
| resumeall |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::deep_nwell_draw {} { |
| set w [magic::i2u [box width]] |
| set h [magic::i2u [box height]] |
| if {$w < 3.0} { |
| puts stderr "Deep-nwell region width must be at least 3.0um" |
| return |
| } |
| if {$h < 3.0} { |
| puts stderr "Deep-nwell region height must be at least 3.0um" |
| return |
| } |
| suspendall |
| tech unlock * |
| paint dnwell |
| pushbox |
| pushbox |
| box grow c 0.4um |
| paint nwell |
| box grow c -1.43um |
| erase nwell |
| popbox |
| box grow c 0.03um |
| |
| pushbox |
| box width 0 |
| box grow c 0.085um |
| paint li |
| pushbox |
| box grow n -0.3um |
| box grow s -0.3um |
| paint nsc |
| popbox |
| box grow c 0.1um |
| paint nsd |
| popbox |
| |
| pushbox |
| box height 0 |
| box grow c 0.085um |
| paint li |
| pushbox |
| box grow e -0.3um |
| box grow w -0.3um |
| paint nsc |
| popbox |
| box grow c 0.1um |
| paint nsd |
| popbox |
| |
| pushbox |
| box move n [box height]i |
| box height 0 |
| box grow c 0.085um |
| paint li |
| pushbox |
| box grow e -0.3um |
| box grow w -0.3um |
| paint nsc |
| popbox |
| box grow c 0.1um |
| paint nsd |
| popbox |
| |
| pushbox |
| box move e [box width]i |
| box width 0 |
| box grow c 0.085um |
| paint li |
| pushbox |
| box grow n -0.3um |
| box grow s -0.3um |
| paint nsc |
| box grow c 0.1um |
| paint nsd |
| popbox |
| |
| popbox |
| tech revert |
| resumeall |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::res_recalc {field parameters} { |
| set snake 0 |
| set sterm 0.0 |
| set caplen 0 |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| set val [magic::spice2float $val] |
| set l [magic::spice2float $l] |
| set w [magic::spice2float $w] |
| |
| if {$snake == 0} { |
| # Straight resistor calculation |
| switch $field { |
| val { set l [expr ($val * ($w - $dw) - (2 * $term)) / $rho] |
| set w [expr ((2 * $term + $l * $rho) / $val) + $dw] |
| } |
| w { set val [expr (2 * $term + $l * $rho) / ($w - $dw)] |
| set l [expr ($val * ($w - $dw) - (2 * $term)) / $rho] |
| } |
| l { set val [expr (2 * $term + $l * $rho) / ($w - $dw)] |
| set w [expr ((2 * $term + $l * $rho) / $val) + $dw] |
| } |
| } |
| } else { |
| set term [expr $term + $sterm] |
| # Snake resistor calculation |
| switch $field { |
| val { set l [expr (($val - $rho * ($nx - 1)) * ($w - $dw) \ |
| - (2 * $term) - ($rho * $caplen * ($nx - 1))) \ |
| / ($rho * $nx)] |
| |
| set w [expr ((2 * $term + $l * $rho * $nx \ |
| + $caplen * $rho * ($nx - 1)) \ |
| / ($val - $rho * ($nx - 1))) + $dw] |
| } |
| w { set val [expr $rho * ($nx - 1) + ((2 * $term) \ |
| + ($rho * $l * $nx) + ($rho * $caplen * ($nx - 1))) \ |
| / ($w - $dw)] |
| |
| set l [expr (($val - $rho * ($nx - 1)) * ($w - $dw) \ |
| - (2 * $term) - ($rho * $caplen * ($nx - 1))) \ |
| / ($rho * $nx)] |
| } |
| l { set val [expr $rho * ($nx - 1) + ((2 * $term) \ |
| + ($rho * $l * $nx) + ($rho * $caplen * ($nx - 1))) \ |
| / ($w - $dw)] |
| |
| set w [expr ((2 * $term + $l * $rho * $nx \ |
| + $caplen * $rho * ($nx - 1)) \ |
| / ($val - $rho * ($nx - 1))) + $dw] |
| } |
| } |
| } |
| |
| set val [magic::3digitpastdecimal $val] |
| set w [magic::3digitpastdecimal $w] |
| set l [magic::3digitpastdecimal $l] |
| |
| dict set parameters val $val |
| dict set parameters w $w |
| dict set parameters l $l |
| |
| return $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| # Drawn diode routines |
| #---------------------------------------------------------------- |
| |
| proc sky130::diode_recalc {field parameters} { |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| switch $field { |
| area { puts stdout "area changed" } |
| peri { puts stdout "perimeter changed" } |
| w { puts stdout "width changed" } |
| l { puts stdout "length changed" } |
| } |
| dict set parameters area $area |
| dict set parameters peri $peri |
| dict set parameters w $w |
| dict set parameters l $l |
| } |
| |
| #---------------------------------------------------------------- |
| # diode: Conversion from SPICE netlist parameters to toolkit |
| #---------------------------------------------------------------- |
| |
| proc sky130::diode_convert {parameters} { |
| set pdkparams [dict create] |
| dict for {key value} $parameters { |
| switch -nocase $key { |
| l - |
| w - |
| peri { |
| # Length, width, and perimeter are converted to units of microns |
| set value [magic::spice2float $value] |
| # set value [expr $value * 1e6] |
| set value [magic::3digitpastdecimal $value] |
| dict set pdkparams [string tolower $key] $value |
| } |
| area { |
| # area also converted to units of microns |
| set value [magic::spice2float $value] |
| # set value [expr $value * 1e12] |
| set value [magic::3digitpastdecimal $value] |
| dict set pdkparams [string tolower $key] $value |
| } |
| m { |
| # Convert m to ny |
| dict set pdkparams ny $value |
| } |
| } |
| } |
| return $pdkparams |
| } |
| |
| #---------------------------------------------------------------- |
| # diode: Interactively specifies the fixed layout parameters |
| #---------------------------------------------------------------- |
| |
| proc sky130::diode_dialog {device parameters} { |
| # Editable fields: w, l, area, perim, nx, ny |
| |
| magic::add_entry area "Area (um^2)" $parameters |
| magic::add_entry peri "Perimeter (um)" $parameters |
| sky130::compute_aptot $parameters |
| magic::add_message atot "Total area (um^2)" $parameters |
| magic::add_message ptot "Total perimeter (um)" $parameters |
| magic::add_entry l "Length (um)" $parameters |
| magic::add_entry w "Width (um)" $parameters |
| magic::add_entry nx "X Repeat" $parameters |
| magic::add_entry ny "Y Repeat" $parameters |
| |
| if {[dict exists $parameters compatible]} { |
| set sellist [dict get $parameters compatible] |
| magic::add_selectlist gencell "Device type" $sellist $parameters $device |
| } |
| |
| if {[dict exists $parameters doverlap]} { |
| magic::add_checkbox doverlap "Overlap at end contact" $parameters |
| } |
| if {[dict exists $parameters elc]} { |
| magic::add_checkbox elc "Add left end contact" $parameters |
| } |
| if {[dict exists $parameters erc]} { |
| magic::add_checkbox erc "Add right end contact" $parameters |
| } |
| if {[dict exists $parameters etc]} { |
| magic::add_checkbox etc "Add top end contact" $parameters |
| } |
| if {[dict exists $parameters ebc]} { |
| magic::add_checkbox ebc "Add bottom end contact" $parameters |
| } |
| |
| if {[dict exists $parameters guard]} { |
| magic::add_checkbox full_metal "Full metal guard ring" $parameters |
| } |
| if {[dict exists $parameters glc]} { |
| magic::add_checkbox glc "Add left guard ring contact" $parameters |
| } |
| if {[dict exists $parameters grc]} { |
| magic::add_checkbox grc "Add right guard ring contact" $parameters |
| } |
| if {[dict exists $parameters gtc]} { |
| magic::add_checkbox gtc "Add top guard ring contact" $parameters |
| } |
| if {[dict exists $parameters gbc]} { |
| magic::add_checkbox gbc "Add bottom guard ring contact" $parameters |
| } |
| if {[dict exists $parameters viagb]} { |
| magic::add_entry viagb "Bottom guard ring via coverage \[+/-\](%)" $parameters |
| } |
| if {[dict exists $parameters viagt]} { |
| magic::add_entry viagt "Top guard ring via coverage \[+/-\](%)" $parameters |
| } |
| if {[dict exists $parameters viagr]} { |
| magic::add_entry viagr "Right guard ring via coverage \[+/-\](%)" $parameters |
| } |
| if {[dict exists $parameters viagl]} { |
| magic::add_entry viagl "Left guard ring via coverage \[+/-\](%)" $parameters |
| } |
| |
| if {[dict exists $parameters vias]} { |
| magic::add_checkbox vias "Add vias over contacts" $parameters |
| } |
| |
| magic::add_dependency sky130::diode_recalc $device sky130 l w area peri |
| |
| # magic::add_checkbox dummy "Add dummy" $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| # Diode total area and perimeter computation |
| #---------------------------------------------------------------- |
| |
| proc sky130::compute_aptot {parameters} { |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| set area [magic::spice2float $area] |
| set area [magic::3digitpastdecimal $area] |
| set peri [magic::spice2float $peri] |
| set peri [magic::3digitpastdecimal $peri] |
| |
| # Compute total area |
| catch {set magic::atot_val [expr ($area * $nx * $ny)]} |
| # Compute total perimeter |
| catch {set magic::ptot_val [expr ($peri * $nx * $ny)]} |
| } |
| |
| #---------------------------------------------------------------- |
| # diode: Check device parameters for out-of-bounds values |
| #---------------------------------------------------------------- |
| |
| proc sky130::diode_check {parameters} { |
| |
| set guard 0 |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Normalize distance units to microns |
| set l [magic::spice2float $l] |
| set l [magic::3digitpastdecimal $l] |
| set w [magic::spice2float $w] |
| set w [magic::3digitpastdecimal $w] |
| |
| set area [magic::spice2float $area] |
| set area [magic::3digitpastdecimal $area] |
| set peri [magic::spice2float $peri] |
| set peri [magic::3digitpastdecimal $peri] |
| |
| if {$l == 0} { |
| # Calculate L from W and area |
| set l [expr ($area / $w)] |
| dict set parameters l [magic::float2spice $l] |
| } elseif {$w == 0} { |
| # Calculate W from L and area |
| set w [expr ($area / $l)] |
| dict set parameters w [magic::float2spice $w] |
| } |
| if {$w < $wmin} { |
| puts stderr "Diode width must be >= $wmin" |
| dict set parameters w $wmin |
| } |
| if {$l < $lmin} { |
| puts stderr "Diode length must be >= $lmin" |
| dict set parameters l $lmin |
| } |
| |
| # Check via coverage for syntax |
| if {$guard == 1} { |
| if {[catch {expr abs($viagb)}]} { |
| puts stderr "Guard ring bottom via coverage must be numeric!" |
| dict set parameters viagb 0 |
| } elseif {[expr abs($viagb)] > 100} { |
| puts stderr "Guard ring bottom via coverage can't be more than 100%" |
| dict set parameters viagb 100 |
| } |
| if {[catch {expr abs($viagt)}]} { |
| puts stderr "Guard ring top via coverage must be numeric!" |
| dict set parameters viagt 0 |
| } elseif {[expr abs($viagt)] > 100} { |
| puts stderr "Guard ring top via coverage can't be more than 100%" |
| dict set parameters viagt 100 |
| } |
| if {[catch {expr abs($viagr)}]} { |
| puts stderr "Guard ring right via coverage must be numeric!" |
| dict set parameters viagr 0 |
| } elseif {[expr abs($viagr)] > 100} { |
| puts stderr "Guard ring right via coverage can't be more than 100%" |
| dict set parameters viagr 100 |
| } |
| if {[catch {expr abs($viagl)}]} { |
| puts stderr "Guard ring left via coverage must be numeric!" |
| dict set parameters viagl 0 |
| } elseif {[expr abs($viagl)] > 100} { |
| puts stderr "Guard ring left via coverage can't be more than 100%" |
| dict set parameters viagl 100 |
| } |
| } |
| |
| # Calculate area and perimeter from L and W |
| set area [expr ($l * $w)] |
| dict set parameters area [magic::float2spice $area] |
| set peri [expr (2 * ($l + $w))] |
| dict set parameters peri [magic::float2spice $peri] |
| sky130::compute_aptot $parameters |
| |
| return $parameters |
| } |
| |
| #------------------------------------------------------------------ |
| # NOTE: sky130_fd_pr__diode_pw2nd_05v5_lvt, |
| # sky130_fd_pr__diode_pw2nd_05v5_nvt, sky130_fd_pr__diode_pd2nw_05v5_lvt, |
| # and sky130_fd_pr__diode_pd2nw_11v0 are all considered parasitic diodes. |
| # They may be generated by invoking the build procedure on the |
| # command line. To enable them in the PDK, add them to the |
| # appropriate compatible {} list. |
| #------------------------------------------------------------------ |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_defaults {} { |
| return {w 0.45 l 0.45 area 0.2025 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pw2nd_05v5 sky130_fd_pr__diode_pw2nd_05v5_lvt \ |
| sky130_fd_pr__diode_pw2nd_05v5_nvt sky130_fd_pr__diode_pw2nd_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_lvt_defaults {} { |
| return {w 0.45 l 0.45 area 0.2025 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pw2nd_05v5 sky130_fd_pr__diode_pw2nd_05v5_lvt \ |
| sky130_fd_pr__diode_pw2nd_05v5_nvt sky130_fd_pr__diode_pw2nd_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_nvt_defaults {} { |
| return {w 0.45 l 0.45 area 0.2024 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pw2nd_05v5 sky130_fd_pr__diode_pw2nd_05v5_lvt \ |
| sky130_fd_pr__diode_pw2nd_05v5_nvt sky130_fd_pr__diode_pw2nd_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_11v0_defaults {} { |
| return {w 0.45 l 0.45 area 0.2024 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pw2nd_05v5 sky130_fd_pr__diode_pw2nd_05v5_lvt \ |
| sky130_fd_pr__diode_pw2nd_05v5_nvt sky130_fd_pr__diode_pw2nd_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__photodiode_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 xstep 8.0 ystep 8.0} |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_defaults {} { |
| return {w 0.45 l 0.45 area 0.2025 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pd2nw_05v5 sky130_fd_pr__diode_pd2nw_05v5_lvt \ |
| sky130_fd_pr__diode_pd2nw_05v5_hvt sky130_fd_pr__diode_pd2nw_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_lvt_defaults {} { |
| return {w 0.45 l 0.45 area 0.2025 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pd2nw_05v5 sky130_fd_pr__diode_pd2nw_05v5_lvt \ |
| sky130_fd_pr__diode_pd2nw_05v5_hvt sky130_fd_pr__diode_pd2nw_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_hvt_defaults {} { |
| return {w 0.45 l 0.45 area 0.2025 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pd2nw_05v5 sky130_fd_pr__diode_pd2nw_05v5_lvt \ |
| sky130_fd_pr__diode_pd2nw_05v5_hvt sky130_fd_pr__diode_pd2nw_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_11v0_defaults {} { |
| return {w 0.45 l 0.45 area 0.2024 peri 1.8 \ |
| nx 1 ny 1 dummy 0 lmin 0.45 wmin 0.45 \ |
| elc 1 erc 1 etc 1 ebc 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 doverlap 0 \ |
| compatible {sky130_fd_pr__diode_pd2nw_05v5 sky130_fd_pr__diode_pd2nw_05v5_lvt \ |
| sky130_fd_pr__diode_pd2nw_05v5_hvt sky130_fd_pr__diode_pd2nw_11v0} \ |
| full_metal 1 vias 1 viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_lvt_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_nvt_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_11v0_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__photodiode_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_lvt_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_hvt_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_11v0_convert {parameters} { |
| return [sky130::diode_convert $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pw2nd_05v5 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_lvt_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pw2nd_05v5_lvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_nvt_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pw2nd_05v5_nvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_11v0_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pw2nd_11v0 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__photodiode_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pd2nw_05v5 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_lvt_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pd2nw_05v5_lvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_hvt_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pd2nw_05v5_hvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_11v0_dialog {parameters} { |
| sky130::diode_dialog sky130_fd_pr__diode_pd2nw_11v0 $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_lvt_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_nvt_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_11v0_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__photodiode_check {parameters} { |
| sky130::fixed_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_lvt_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_hvt_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_11v0_check {parameters} { |
| sky130::diode_check $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| # Diode: Draw a single device |
| #---------------------------------------------------------------- |
| |
| proc sky130::diode_device {parameters} { |
| # Epsilon for avoiding round-off errors |
| set eps 0.0005 |
| |
| # Set local default values if they are not in parameters |
| set dev_surround 0 |
| set dev_sub_type "" |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # If there is no end_sub_surround, set it to sub_surround |
| if {![dict exists $parameters end_sub_surround]} { |
| set end_sub_surround $sub_surround |
| } |
| |
| # Draw the device |
| pushbox |
| box size 0 0 |
| |
| set hw [/ $w 2.0] |
| set hl [/ $l 2.0] |
| |
| # Calculate ring size (measured to contact center) |
| set gx [+ $w [* 2.0 [+ $dev_spacing $dev_surround]] $contact_size] |
| set gy [+ $l [* 2.0 [+ $dev_spacing $dev_surround]] $contact_size] |
| |
| # Draw the ring first, because diode may occupy well/substrate plane |
| set guardparams $parameters |
| dict set guardparams plus_diff_type $end_type |
| dict set guardparams plus_contact_type $end_contact_type |
| dict set guardparams diff_surround $end_surround |
| dict set guardparams sub_type $end_sub_type |
| dict set guardparams sub_surround $sub_surround |
| dict set guardparams guard_sub_surround $end_sub_surround |
| dict set guardparams glc $elc |
| dict set guardparams grc $erc |
| dict set guardparams gtc $etc |
| dict set guardparams gbc $ebc |
| set cext [sky130::guard_ring $gx $gy $guardparams] |
| |
| pushbox |
| box grow n ${hl}um |
| box grow s ${hl}um |
| box grow e ${hw}um |
| box grow w ${hw}um |
| paint ${dev_type} |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| |
| if {$dev_sub_type != ""} { |
| box grow n ${sub_surround}um |
| box grow s ${sub_surround}um |
| box grow e ${sub_surround}um |
| box grow w ${sub_surround}um |
| paint ${dev_sub_type} |
| } |
| popbox |
| |
| if {${w} < ${l}} { |
| set orient vert |
| } else { |
| set orient horz |
| } |
| |
| # Reduce width by surround amount |
| set w [- $w [* ${dev_surround} 2.0]] |
| set l [- $l [* ${dev_surround} 2.0]] |
| |
| # Draw via over contact first |
| if {$vias != 0} { |
| pushbox |
| set ch $l |
| if {$ch < $via_size} {set ch $via_size} |
| set cw $w |
| if {$cw < $via_size} {set cw $via_size} |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| box grow w [/ $cw 2]um |
| box grow e [/ $cw 2]um |
| sky130::mcon_draw |
| popbox |
| } |
| set cext [sky130::unionbox $cext [sky130::draw_contact ${w} ${l} \ |
| ${dev_surround} ${metal_surround} ${contact_size} \ |
| ${dev_type} ${dev_contact_type} li ${orient}]] |
| |
| popbox |
| return $cext |
| } |
| |
| #---------------------------------------------------------------- |
| # Diode: Draw the tiled device |
| #---------------------------------------------------------------- |
| |
| proc sky130::diode_draw {parameters} { |
| tech unlock * |
| |
| # Set defaults if they are not in parameters |
| set doverlap 0 ;# overlap diodes at contacts |
| set guard 0 ;# draw a guard ring |
| set prohibit_overlap false ;# don't prohibit overlaps |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Normalize distance units to microns |
| set w [magic::spice2float $w] |
| set l [magic::spice2float $l] |
| |
| pushbox |
| box values 0 0 0 0 |
| |
| # Determine the base device dimensions by drawing one device |
| # while all layers are locked (nothing drawn). This allows the |
| # base drawing routine to do complicated geometry without having |
| # to duplicate it here with calculations. |
| |
| tech lock * |
| set bbox [sky130::diode_device $parameters] |
| # puts stdout "Diagnostic: Device bounding box e $bbox (um)" |
| tech unlock * |
| |
| set fw [- [lindex $bbox 2] [lindex $bbox 0]] |
| set fh [- [lindex $bbox 3] [lindex $bbox 1]] |
| set lw [+ [lindex $bbox 2] [lindex $bbox 0]] |
| set lh [+ [lindex $bbox 3] [lindex $bbox 1]] |
| |
| # If prohibit_overlap is true, then end overlapping is prohibited when |
| # nx or ny is > 1 to prevent DRC errors (typically from well spacing rule) |
| if {$prohibit_overlap == true} { |
| if {($nx > 1) || ($ny > 1)} { |
| set doverlap 0 |
| } |
| } |
| |
| # Determine tile width and height (depends on overlap) |
| |
| if {$doverlap == 0} { |
| set dx [+ $fw $end_spacing] |
| set dy [+ $fh $end_spacing] |
| } else { |
| # overlap contact |
| set dx [- $fw [+ [* 2.0 $sub_surround] [* 2.0 $end_surround] $contact_size]] |
| set dy [- $fh [+ [* 2.0 $sub_surround] [* 2.0 $end_surround] $contact_size]] |
| } |
| |
| # Determine core width and height |
| set corex [+ [* [- $nx 1] $dx] $fw] |
| set corey [+ [* [- $ny 1] $dy] $fh] |
| set corellx [/ [+ [- $corex $fw] $lw] 2.0] |
| set corelly [/ [+ [- $corey $fh] $lh] 2.0] |
| |
| if {$guard != 0} { |
| # Calculate guard ring size (measured to contact center) |
| set gx [+ $corex [* 2.0 [+ $diff_spacing $diff_surround]] $contact_size] |
| set gy [+ $corey [* 2.0 [+ $diff_spacing $diff_surround]] $contact_size] |
| |
| # Draw the guard ring first, because diode may occupy well/substrate plane |
| sky130::guard_ring $gx $gy $parameters |
| } |
| |
| pushbox |
| box move w ${corellx}um |
| box move s ${corelly}um |
| if {($nx > 1) || ($ny > 1)} { |
| pushbox |
| set hfw [/ $fw 2.0] |
| set hfh [/ $fh 2.0] |
| box move w ${hfw}um |
| box move s ${hfh}um |
| box size ${corex}um ${corey}um |
| paint $end_sub_type |
| popbox |
| } |
| for {set xp 0} {$xp < $nx} {incr xp} { |
| pushbox |
| for {set yp 0} {$yp < $ny} {incr yp} { |
| sky130::diode_device $parameters |
| box move n ${dy}um |
| } |
| popbox |
| box move e ${dx}um |
| } |
| popbox |
| popbox |
| |
| tech revert |
| } |
| |
| #---------------------------------------------------------------- |
| # Photodiode: Draw a single device |
| #---------------------------------------------------------------- |
| |
| proc sky130::photodiode_device {parameters} { |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Draw the device |
| pushbox |
| box size 0 0 |
| |
| # Device has ntap fixed width of 0.41 x 0.41 |
| # Surrounded by nwell 0.84 x 0.84 |
| # Surrounded by deep nwell 3.0 x 3.0 |
| |
| pushbox |
| box grow c 0.205um |
| paint nsd |
| popbox |
| pushbox |
| box grow c 0.42um |
| paint nwell |
| popbox |
| pushbox |
| box grow c 1.5um |
| paint photo |
| |
| set cext [sky130::getbox] |
| |
| popbox |
| |
| # Only enough space for one contact |
| set w ${contact_size} |
| set l ${contact_size} |
| |
| set cext [sky130::unionbox $cext [sky130::draw_contact ${w} ${l} \ |
| 0 ${metal_surround} ${contact_size} \ |
| nsd nsc li horz]] |
| |
| popbox |
| return $cext |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::photodiode_draw {parameters} { |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| pushbox |
| box values 0 0 0 0 |
| |
| # Determine the base device dimensions by drawing one device |
| # while all layers are locked (nothing drawn). This allows the |
| # base drawing routine to do complicated geometry without having |
| # to duplicate it here with calculations. |
| |
| tech lock * |
| set bbox [sky130::photodiode_device $parameters] |
| # puts stdout "Diagnostic: Device bounding box e $bbox (um)" |
| tech unlock * |
| |
| set fw [- [lindex $bbox 2] [lindex $bbox 0]] |
| set fh [- [lindex $bbox 3] [lindex $bbox 1]] |
| set lw [+ [lindex $bbox 2] [lindex $bbox 0]] |
| set lh [+ [lindex $bbox 3] [lindex $bbox 1]] |
| |
| # Determine tile width and height |
| |
| set dx [+ $fw $end_spacing] |
| set dy [+ $fh $end_spacing] |
| |
| # Determine core width and height |
| set corex [+ [* [- $nx 1] $dx] $fw] |
| set corey [+ [* [- $ny 1] $dy] $fh] |
| set corellx [/ [+ [- $corex $fw] $lw] 2.0] |
| set corelly [/ [+ [- $corey $fh] $lh] 2.0] |
| |
| # Calculate guard ring size (measured to contact center) |
| # Spacing between photodiode (deep nwell) and deep nwell (other) is 5.3um |
| set gx [+ $corex 15.965] |
| set gy [+ $corey 15.965] |
| |
| pushbox |
| |
| # The deep nwell is offset 0.315 from the nwell ring center to get the |
| # right overlap. The deep nwell ring has a minimum width of 3um. |
| set hgx [/ $gx 2.0] |
| set hgy [/ $gy 2.0] |
| set dwx [+ $hgx 0.315] |
| set dwy [+ $hgy 0.315] |
| box grow e ${dwx}um |
| box grow w ${dwx}um |
| box grow n ${dwy}um |
| box grow s ${dwy}um |
| paint dnwell |
| box grow e -3.0um |
| box grow w -3.0um |
| box grow n -3.0um |
| box grow s -3.0um |
| erase dnwell |
| |
| popbox |
| |
| # Draw the guard ring first. 0.63 is the amount nwell surrounds contact; |
| # 0.63 * 2 + 0.17 = total nwell width 1.43um, needed to cover dnwell edge. |
| set newdict [dict create \ |
| sub_type space \ |
| guard_sub_type nwell \ |
| guard_sub_surround 0.63 \ |
| plus_diff_type nsd \ |
| plus_contact_type nsc \ |
| ] |
| set guarddict [dict merge $parameters $newdict] |
| sky130::guard_ring $gx $gy $guarddict |
| |
| # Draw outside P-ring and generated the 2nd ring |
| set gx [+ $gx [* 2.0 [+ 0.56 $diff_spacing $diff_surround]] $contact_size] |
| set gy [+ $gy [* 2.0 [+ 0.56 $diff_spacing $diff_surround]] $contact_size] |
| sky130::guard_ring $gx $gy $parameters |
| |
| pushbox |
| box move w ${corellx}um |
| box move s ${corelly}um |
| |
| for {set xp 0} {$xp < $nx} {incr xp} { |
| pushbox |
| for {set yp 0} {$yp < $ny} {incr yp} { |
| sky130::photodiode_device $parameters |
| box move n ${dy}um |
| } |
| popbox |
| box move e ${dx}um |
| } |
| popbox |
| popbox |
| |
| tech revert |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| dev_type ndiode \ |
| dev_contact_type ndic \ |
| end_type psd \ |
| end_contact_type psc \ |
| end_sub_type psub \ |
| dev_spacing ${diff_spacing} \ |
| dev_surround ${diff_surround} \ |
| end_spacing ${diff_spacing} \ |
| end_surround 0 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| # NOTE: Use ppd instead of psd so that there is additional |
| # diffusion around the contact, allowing more space for the |
| # implant (likewise sky130_fd_pr__diode_pd2nw_05v5_lvt and |
| # sky130_fd_pr__diode_pd2nw_11v0). |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_lvt_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| dev_type ndiodelvt \ |
| dev_contact_type ndilvtc \ |
| end_type ppd \ |
| end_contact_type psc \ |
| end_sub_type psub \ |
| dev_spacing ${diff_spacing} \ |
| dev_surround ${diff_surround} \ |
| end_spacing ${diff_spacing} \ |
| end_surround ${diff_surround} \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_05v5_nvt_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| dev_type nndiode \ |
| dev_contact_type nndic \ |
| end_type mvpsd \ |
| end_contact_type mvpsc \ |
| end_sub_type psub \ |
| dev_spacing 0.37 \ |
| dev_surround ${diff_surround} \ |
| end_spacing 0.30 \ |
| end_surround ${diff_surround} \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__diode_pw2nd_11v0_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| dev_type mvndiode \ |
| dev_contact_type mvndic \ |
| end_type mvpsd \ |
| end_contact_type mvpsc \ |
| end_sub_type psub \ |
| diff_spacing 0.37 \ |
| dev_spacing 0.39 \ |
| dev_surround ${diff_surround} \ |
| end_spacing 0.36 \ |
| end_surround ${diff_surround} \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| dev_type pdiode \ |
| guard 1 \ |
| dev_contact_type pdic \ |
| end_type nsd \ |
| end_contact_type nsc \ |
| end_sub_type nwell \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| sub_type psub \ |
| dev_spacing ${diff_spacing} \ |
| dev_surround ${diff_surround} \ |
| end_spacing ${diff_spacing} \ |
| end_surround 0 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_lvt_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| dev_type pdiodelvt \ |
| guard 1 \ |
| dev_contact_type pdilvtc \ |
| end_type nnd \ |
| end_contact_type nsc \ |
| end_sub_type nwell \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| sub_type psub \ |
| dev_spacing ${diff_spacing} \ |
| dev_surround ${diff_surround} \ |
| end_spacing ${diff_spacing} \ |
| end_surround ${diff_surround} \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_05v5_hvt_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| dev_type pdiodehvt \ |
| guard 1 \ |
| dev_contact_type pdihvtc \ |
| end_type nnd \ |
| end_contact_type nsc \ |
| end_sub_type nwell \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| sub_type psub \ |
| dev_spacing ${diff_spacing} \ |
| dev_surround ${diff_surround} \ |
| end_spacing ${diff_spacing} \ |
| end_surround ${diff_surround} \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__diode_pd2nw_11v0_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 1 \ |
| dev_type mvpdiode \ |
| dev_contact_type mvpdic \ |
| end_type mvnsd \ |
| end_contact_type mvnsc \ |
| end_sub_type nwell \ |
| plus_diff_type mvpsd \ |
| plus_contact_type mvpsc \ |
| sub_type psub \ |
| diff_spacing 0.58 \ |
| dev_spacing 0.37 \ |
| dev_surround ${diff_surround} \ |
| end_spacing 0.30 \ |
| end_sub_surround 0.33 \ |
| end_surround ${diff_surround} \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::diode_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| # The photodiode has its own drawing routine, so |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__photodiode_draw {parameters} { |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 1 \ |
| sub_type space \ |
| end_spacing 5.0 \ |
| end_surround 1.0 \ |
| sub_spacing 5.3 \ |
| guard_sub_type pwell \ |
| guard_sub_surround 0.18 \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::photodiode_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| # Drawn capacitor routines |
| # NOTE: Work in progress. These values need to be corrected. |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__cap_mim_m3_1_defaults {} { |
| return {w 2.00 l 2.00 val 8.0 carea 2.00 cperi 0.19 \ |
| nx 1 ny 1 dummy 0 square 0 lmin 2.00 wmin 2.00 \ |
| lmax 30.0 wmax 30.0 dc 0 bconnect 1 tconnect 1 \ |
| ccov 100} |
| } |
| proc sky130::sky130_fd_pr__cap_mim_m3_2_defaults {} { |
| return {w 2.00 l 2.00 val 8.0 carea 2.00 cperi 0.19 \ |
| nx 1 ny 1 dummy 0 square 0 lmin 2.00 wmin 2.00 \ |
| lmax 30.0 wmax 30.0 dc 0 bconnect 1 tconnect 1 \ |
| ccov 100} |
| } |
| |
| |
| #---------------------------------------------------------------- |
| # Recalculate capacitor values from GUI entries. |
| # Recomputes W/L and Value as long as 2 of them are present |
| # (To be completed) |
| #---------------------------------------------------------------- |
| |
| proc sky130::cap_recalc {field parameters} { |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| switch $field { |
| val { puts stdout "value changed" } |
| w { puts stdout "width changed" } |
| l { puts stdout "length changed" } |
| } |
| dict set parameters val $val |
| dict set parameters w $w |
| dict set parameters l $l |
| } |
| |
| #---------------------------------------------------------------- |
| # Capacitor defaults: |
| #---------------------------------------------------------------- |
| # w Width of drawn cap |
| # l Length of drawn cap |
| # nx Number of devices in X |
| # ny Number of devices in Y |
| # val Default cap value |
| # carea Area |
| # cperi Perimeter |
| # dummy Add dummy cap |
| # square Make square capacitor |
| # |
| # (not user-editable) |
| # |
| # wmin Minimum allowed width |
| # lmin Minimum allowed length |
| # dc Area to remove to calculated area |
| #---------------------------------------------------------------- |
| |
| #---------------------------------------------------------------- |
| # capacitor: Conversion from SPICE netlist parameters to toolkit |
| #---------------------------------------------------------------- |
| |
| proc sky130::cap_convert {parameters} { |
| set pdkparams [dict create] |
| dict for {key value} $parameters { |
| switch -nocase $key { |
| l - |
| w { |
| # Length and width are converted to units of microns |
| set value [magic::spice2float $value] |
| # set value [expr $value * 1e6] |
| set value [magic::3digitpastdecimal $value] |
| dict set pdkparams [string tolower $key] $value |
| } |
| m { |
| # Convert m to ny |
| dict set pdkparams ny $value |
| } |
| } |
| } |
| return $pdkparams |
| } |
| |
| proc sky130::sky130_fd_pr__cap_mim_m3_1_convert {parameters} { |
| return [cap_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_mim_m3_2_convert {parameters} { |
| return [cap_convert $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # capacitor: Interactively specifies the fixed layout parameters |
| #---------------------------------------------------------------- |
| |
| proc sky130::cap_dialog {device parameters} { |
| # Editable fields: w, l, nx, ny, val |
| # Checked fields: square, dummy |
| |
| magic::add_entry val "Value (fF)" $parameters |
| sky130::compute_ctot $parameters |
| magic::add_message ctot "Total capacitance (pF)" $parameters |
| magic::add_entry l "Length (um)" $parameters |
| magic::add_entry w "Width (um)" $parameters |
| magic::add_entry nx "X Repeat" $parameters |
| magic::add_entry ny "Y Repeat" $parameters |
| |
| if {[dict exists $parameters square]} { |
| magic::add_checkbox square "Square capacitor" $parameters |
| } |
| if {[dict exists $parameters bconnect]} { |
| magic::add_checkbox bconnect "Connect bottom plates in array" $parameters |
| } |
| if {[dict exists $parameters tconnect]} { |
| magic::add_checkbox tconnect "Connect top plates in array" $parameters |
| } |
| if {[dict exists $parameters ccov]} { |
| magic::add_entry ccov "Capacitor contact coverage \[+/-\](%)" $parameters |
| } |
| if {[dict exists $parameters guard]} { |
| magic::add_checkbox guard "Add guard ring" $parameters |
| } |
| |
| magic::add_dependency sky130::cap_recalc $device sky130 l w val |
| |
| # magic::add_checkbox dummy "Add dummy" $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__cap_mim_m3_1_dialog {parameters} { |
| sky130::cap_dialog sky130_fd_pr__cap_mim_m3_1 $parameters |
| } |
| proc sky130::sky130_fd_pr__cap_mim_m3_2_dialog {parameters} { |
| sky130::cap_dialog sky130_fd_pr__cap_mim_m3_2 $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| # Capacitor total capacitance computation |
| #---------------------------------------------------------------- |
| |
| proc sky130::compute_ctot {parameters} { |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| set val [magic::spice2float $val] |
| set val [magic::3digitpastdecimal $val] |
| |
| # Compute total capacitance (and convert fF to pF) |
| catch {set magic::ctot_val [expr (0.001 * $val * $nx * $ny)]} |
| } |
| |
| #---------------------------------------------------------------- |
| # Capacitor: Draw a single device |
| #---------------------------------------------------------------- |
| |
| proc sky130::cap_device {parameters} { |
| # Epsilon for avoiding round-off errors |
| set eps 0.0005 |
| |
| # Set local default values if they are not in parameters |
| set cap_surround 0 |
| set bot_surround 0 |
| set top_surround 0 |
| set end_spacing 0 |
| set bconnect 0 ;# bottom plates are connected in array |
| set cap_spacing 0 ;# cap spacing in array |
| set top_metal_space 0 ;# top metal spacing (if larger than cap spacing) |
| set top_metal_width 0 ;# top metal minimum width |
| set contact_size 0 ;# cap contact minimum size |
| set ccov 100 ;# amount of contact coverage |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| if {![dict exists $parameters top_metal_space]} { |
| set top_metal_space $metal_spacing |
| } |
| |
| # Draw the device |
| pushbox |
| box size 0 0 |
| |
| pushbox |
| set hw [/ $w 2.0] |
| set hl [/ $l 2.0] |
| box grow e ${hw}um |
| box grow w ${hw}um |
| box grow n ${hl}um |
| box grow s ${hl}um |
| paint ${cap_type} |
| pushbox |
| |
| # Find contact width if ccov is other than 100 |
| set cmaxw [- $w [* $cap_surround 2]] |
| set cw [* $cmaxw [/ [expr abs($ccov)] 100.0]] |
| # Contact width must meet minimum |
| if {$cw < $contact_size} {set cw $contact_size} |
| if {$cw < $top_metal_width} {set cw $top_metal_width} |
| # Difference between maximum contact width and actual contact width |
| set cdif [- $cmaxw $cw] |
| |
| # Reduce the box to the maximum contact area |
| box grow n -${cap_surround}um |
| box grow s -${cap_surround}um |
| box grow e -${cap_surround}um |
| box grow w -${cap_surround}um |
| |
| set anchor [string index $ccov 0] |
| if {$anchor == "+"} { |
| box grow e -${cdif}um |
| } elseif {$anchor == "-"} { |
| box grow w -${cdif}um |
| } else { |
| set cdif [/ ${cdif} 2] |
| box grow w -${cdif}um |
| box grow e -${cdif}um |
| } |
| paint ${cap_contact_type} |
| |
| pushbox |
| box grow n ${top_surround}um |
| box grow s ${top_surround}um |
| box grow e ${top_surround}um |
| box grow w ${top_surround}um |
| paint ${top_type} |
| set cext [sky130::getbox] |
| popbox |
| popbox |
| pushbox |
| box grow n ${bot_surround}um |
| box grow s ${bot_surround}um |
| box grow e ${bot_surround}um |
| box grow w ${bot_surround}um |
| |
| paint ${bot_type} |
| # Create boundary using properties |
| property FIXED_BBOX [box values] |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| |
| # Calculate the distance from the top metal on the cap contact |
| # to the top metal on the end contact. |
| set top_met_sep [+ $end_spacing [- $cdif $top_surround]] |
| |
| # Diagnostic! |
| puts stdout "cdif = $cdif" |
| puts stdout "top_met_sep = $top_met_sep" |
| |
| # Increase end spacing if top metal spacing rule is not met |
| set loc_end_spacing $end_spacing |
| if {$top_met_sep < $top_metal_space} { |
| set loc_end_spacing [+ $loc_end_spacing [- $top_metal_space $top_met_sep]] |
| } |
| # Diagnostic! |
| puts stdout "loc_end_spacing = $loc_end_spacing" |
| |
| # Extend bottom metal under contact to right |
| box grow e ${loc_end_spacing}um |
| set chw [/ ${contact_size} 2.0] |
| box grow e ${chw}um |
| box grow e ${end_surround}um |
| paint ${bot_type} |
| |
| popbox |
| popbox |
| |
| # Draw contact to right. Reduce contact extent if devices are not |
| # wired together and the top metal spacing rule limits the distance |
| set lcont $l |
| if {($bconnect == 0) && ($ny > 1)} { |
| if {$cap_spacing < $top_metal_space} { |
| set cspace [- $top_metal_space $cap_spacing] |
| set lcont [- $l $cspace] |
| } |
| } |
| |
| pushbox |
| box move e ${hw}um |
| box move e ${bot_surround}um |
| box move e ${loc_end_spacing}um |
| set cl [- [+ ${lcont} [* ${bot_surround} 2.0]] [* ${end_surround} 2.0]] |
| set cl [- ${cl} ${metal_surround}] ;# see below |
| set cext [sky130::unionbox $cext [sky130::draw_contact 0 ${cl} \ |
| ${end_surround} ${metal_surround} ${contact_size} \ |
| ${bot_type} ${top_contact_type} ${top_type} full]] |
| popbox |
| popbox |
| |
| return $cext |
| |
| # cl shrinks top and bottom to accomodate larger bottom metal |
| # surround rule for contacts near a MiM cap. This should be its |
| # own variable, but metal_surround is sufficient. |
| } |
| |
| #---------------------------------------------------------------- |
| # Metal plate sandwich capacitor: Draw a single device |
| #---------------------------------------------------------------- |
| |
| proc sky130::sandwich_cap_device {parameters} { |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| pushbox |
| box size 0 0 |
| |
| set hw [/ $w 2.0] |
| set hl [/ $l 2.0] |
| |
| set cw [- [* $hw [/ 2.0 3]] [* $cont_surround 2.0]] |
| set cl [- [* $hl [/ 2.0 3]] [* $cont_surround 2.0]] |
| |
| # plate capacitor defines layers p0, p1, etc. |
| for {set i 0} {$i < 20} {incr i} { |
| if {[catch {set layer [subst \$p${i}_type]}]} {break} ;# no more layers defined |
| pushbox |
| box grow e ${hw}um |
| box grow w ${hw}um |
| box grow n ${hl}um |
| box grow s ${hl}um |
| if {![catch {set shrink [subst \$p${i}_shrink]}]} { |
| box grow e -${shrink}um |
| box grow w -${shrink}um |
| box grow n -${shrink}um |
| box grow s -${shrink}um |
| set cutout_spacing [+ [* ${shrink} 2.0] [/ $via_size 2.0] $cont_surround] |
| } else { |
| set cutout_spacing 0 |
| } |
| |
| paint ${layer} |
| |
| if {$i == 1} { |
| # Note that cap_type geometry is coincident with p1_type. |
| # Typically, this will define a layer that outputs as both |
| # poly and a capacitor definition layer. |
| if {[dict exists $parameters cap_type]} { |
| paint $cap_type |
| } |
| } |
| popbox |
| |
| # Even layers connect at corners, odd layers connect at sides. |
| # Even layers cut out the sides, odd layers cut out the corners. |
| # Layer zero has no side contacts or cutout. |
| |
| if {[% $i 2] == 0} { |
| set cornercmd paint |
| set cornersize $cutout_spacing |
| set sidecmd erase |
| set nssidelong [+ $cutout_spacing [/ $hw 3.0]] |
| set ewsidelong [+ $cutout_spacing [/ $hl 3.0]] |
| set sideshort $cutout_spacing |
| } else { |
| set cornercmd erase |
| set cornersize $cutout_spacing |
| set sidecmd paint |
| set nssidelong [/ $hw 3.0] |
| set ewsidelong [/ $hl 3.0] |
| set sideshort $cutout_spacing |
| } |
| |
| if {$i > 0} { |
| pushbox |
| box move e ${hw}um |
| box grow n ${ewsidelong}um |
| box grow s ${ewsidelong}um |
| box grow w ${sideshort}um |
| ${sidecmd} ${layer} |
| popbox |
| pushbox |
| box move n ${hl}um |
| box grow e ${nssidelong}um |
| box grow w ${nssidelong}um |
| box grow s ${sideshort}um |
| ${sidecmd} ${layer} |
| popbox |
| pushbox |
| box move w ${hw}um |
| box grow n ${ewsidelong}um |
| box grow s ${ewsidelong}um |
| box grow e ${sideshort}um |
| ${sidecmd} ${layer} |
| popbox |
| pushbox |
| box move s ${hl}um |
| box grow e ${nssidelong}um |
| box grow w ${nssidelong}um |
| box grow n ${sideshort}um |
| ${sidecmd} ${layer} |
| popbox |
| |
| pushbox |
| box move n ${hl}um |
| box move e ${hw}um |
| box grow s ${cornersize}um |
| box grow w ${cornersize}um |
| ${cornercmd} ${layer} |
| popbox |
| pushbox |
| box move n ${hl}um |
| box move w ${hw}um |
| box grow s ${cornersize}um |
| box grow e ${cornersize}um |
| ${cornercmd} ${layer} |
| popbox |
| pushbox |
| box move s ${hl}um |
| box move e ${hw}um |
| box grow n ${cornersize}um |
| box grow w ${cornersize}um |
| ${cornercmd} ${layer} |
| popbox |
| pushbox |
| box move s ${hl}um |
| box move w ${hw}um |
| box grow n ${cornersize}um |
| box grow e ${cornersize}um |
| ${cornercmd} ${layer} |
| popbox |
| } |
| } |
| |
| # Draw contacts after all layers have been drawn, so that erasing |
| # layers does not affect the contacts. |
| |
| for {set i 0} {$i < 20} {incr i} { |
| if {![catch {set contact [subst \$p${i}_contact_type]}]} { |
| set layer [subst \$p${i}_type] |
| set j [+ $i 1] |
| set toplayer [subst \$p${j}_type] |
| |
| # Draw corner contacts |
| pushbox |
| box move e ${hw}um |
| box move n ${hl}um |
| sky130::draw_contact 0 0 \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| pushbox |
| box move w ${hw}um |
| box move n ${hl}um |
| sky130::draw_contact 0 0 \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| pushbox |
| box move e ${hw}um |
| box move s ${hl}um |
| sky130::draw_contact 0 0 \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| pushbox |
| box move w ${hw}um |
| box move s ${hl}um |
| sky130::draw_contact 0 0 \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| |
| # Draw side contacts (except on poly) |
| if {$i > 0} { |
| pushbox |
| box move w ${hw}um |
| sky130::draw_contact 0 ${cl} \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| pushbox |
| box move e ${hw}um |
| sky130::draw_contact 0 ${cl} \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| pushbox |
| box move n ${hl}um |
| sky130::draw_contact ${cw} 0 \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| pushbox |
| box move s ${hl}um |
| sky130::draw_contact ${cw} 0 \ |
| ${cont_surround} ${cont_surround} ${via_size} \ |
| ${layer} ${contact} ${toplayer} full |
| popbox |
| } |
| } else { |
| break |
| } |
| } |
| |
| popbox |
| # Bounding box is the same as the device length and width |
| set cext [list -$hw -$hl $hw $hl] |
| return $cext |
| } |
| |
| #---------------------------------------------------------------- |
| # Capacitor: Draw the tiled device |
| #---------------------------------------------------------------- |
| |
| proc sky130::cap_draw {parameters} { |
| tech unlock * |
| set savesnap [snap] |
| snap internal |
| |
| # Set defaults if they are not in parameters |
| set coverlap 0 ;# overlap capacitors at contacts |
| set guard 0 ;# draw a guard ring |
| set sandwich 0 ;# this is not a plate sandwich capacitor |
| set cap_spacing 0 ;# abutted caps if spacing is zero |
| set cap_diff_spacing 0 |
| set wide_cap_spacing 0 ;# additional spacing for wide metal rule |
| set wide_cap_width 0 |
| set end_spacing 0 |
| set end_surround 0 |
| set bot_surround 0 |
| set top_metal_width 0 |
| set bconnect 0 ;# connect bottom plates in array |
| set tconnect 0 ;# connect top plates in array |
| set top_type "" |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Normalize distance units to microns |
| set w [magic::spice2float $w] |
| set l [magic::spice2float $l] |
| |
| pushbox |
| box values 0 0 0 0 |
| |
| # Determine the base device dimensions by drawing one device |
| # while all layers are locked (nothing drawn). This allows the |
| # base drawing routine to do complicated geometry without having |
| # to duplicate it here with calculations. |
| |
| tech lock * |
| if {$sandwich == 1} { |
| set bbox [sky130::sandwich_cap_device $parameters] |
| } else { |
| set bbox [sky130::cap_device $parameters] |
| } |
| # puts stdout "Diagnostic: Device bounding box e $bbox (um)" |
| tech unlock * |
| |
| set fw [- [lindex $bbox 2] [lindex $bbox 0]] |
| set fh [- [lindex $bbox 3] [lindex $bbox 1]] |
| set lw [+ [lindex $bbox 2] [lindex $bbox 0]] |
| set lh [+ [lindex $bbox 3] [lindex $bbox 1]] |
| |
| set dwide 0 |
| if {($fw >= $wide_cap_width) && ($fh >= $wide_cap_width)} { |
| set dwide $wide_cap_spacing |
| } |
| |
| # Determine tile width and height (depends on overlap) |
| if {$coverlap == 0} { |
| set dy [+ $fh $cap_spacing $dwide] |
| } else { |
| # overlap at end contact |
| set dy [- $fh [+ $end_surround $end_surround $contact_size]] |
| } |
| # Contact is placed on right so spacing is determined by end_spacing. |
| set dx [+ $fw $end_spacing $dwide] |
| |
| # Determine core width and height |
| set corex [+ [* [- $nx 1] $dx] $fw] |
| set corey [+ [* [- $ny 1] $dy] $fh] |
| set corellx [/ [+ [- $corex $fw] $lw] 2.0] |
| set corelly [/ [+ [- $corey $fh] $lh] 2.0] |
| |
| if {$guard != 0} { |
| # Calculate guard ring size (measured to contact center) |
| set gx [+ $corex [* 2.0 [+ $cap_diff_spacing $diff_surround]] $contact_size] |
| set gy [+ $corey [* 2.0 [+ $end_spacing $diff_surround]] $contact_size] |
| |
| # Draw the guard ring first. |
| sky130::guard_ring $gx $gy $parameters |
| } |
| |
| set twidth [+ ${contact_size} ${end_surround} ${end_surround}] |
| if {${twidth} < ${top_metal_width}} { |
| set twidth ${top_metal_width} |
| } |
| set hmw [/ $twidth 2.0] |
| set hdy [/ $dy 2.0] |
| set cdx [+ [/ ${w} 2.0] ${bot_surround} ${end_spacing}] |
| |
| pushbox |
| box move w ${corellx}um |
| box move s ${corelly}um |
| for {set xp 0} {$xp < $nx} {incr xp} { |
| pushbox |
| for {set yp 0} {$yp < $ny} {incr yp} { |
| if {$sandwich == 1} { |
| sky130::sandwich_cap_device $parameters |
| } else { |
| sky130::cap_device $parameters |
| } |
| if {$ny > 1} { |
| pushbox |
| box grow e ${hmw}um |
| box grow w ${hmw}um |
| box grow n ${hdy}um |
| box grow s ${hdy}um |
| if {($top_type != "") && ($tconnect == 1)} { |
| paint ${top_type} |
| } |
| if {($top_type != "") && ($bconnect == 1)} { |
| box move e ${cdx}um |
| paint ${top_type} |
| } |
| popbox |
| } |
| box move n ${dy}um |
| } |
| popbox |
| box move e ${dx}um |
| } |
| popbox |
| popbox |
| |
| snap $savesnap |
| tech revert |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__cap_mim_m3_1_draw {parameters} { |
| set newdict [dict create \ |
| top_type m4 \ |
| top_contact_type via3 \ |
| cap_type mimcap \ |
| cap_contact_type mimcc \ |
| bot_type m3 \ |
| bot_surround 0.5 \ |
| cap_spacing 0.5 \ |
| cap_surround 0.2 \ |
| top_surround 0.005 \ |
| end_surround 0.1 \ |
| end_spacing 0.1 \ |
| contact_size 0.32 \ |
| metal_surround 0.08 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::cap_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_mim_m3_2_draw {parameters} { |
| set newdict [dict create \ |
| top_type m5 \ |
| top_contact_type via4 \ |
| cap_type mimcap2 \ |
| cap_contact_type mim2cc \ |
| bot_type m4 \ |
| bot_surround 0.5 \ |
| cap_spacing 0.5 \ |
| cap_surround 0.2 \ |
| top_surround 0.12 \ |
| end_surround 0.1 \ |
| end_spacing 0.1 \ |
| contact_size 1.18 \ |
| metal_surround 0.21 \ |
| top_metal_width 1.6 \ |
| top_metal_space 1.7 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::cap_draw $drawdict] |
| } |
| |
| |
| #---------------------------------------------------------------- |
| # capacitor: Check device parameters for out-of-bounds values |
| #---------------------------------------------------------------- |
| |
| proc sky130::cap_check {parameters} { |
| # In case wmax and/or lmax are undefined |
| set lmax 0 |
| set wmax 0 |
| set ccov 100 |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Normalize distance units to microns |
| set l [magic::spice2float $l] |
| set l [magic::3digitpastdecimal $l] |
| set w [magic::spice2float $w] |
| set w [magic::3digitpastdecimal $w] |
| |
| set val [magic::spice2float $val] |
| set carea [magic::spice2float $carea] |
| set cperi [magic::spice2float $cperi] |
| set dc [magic::spice2float $dc] |
| |
| if {$square == 1} { |
| # Calculate L and W from value |
| set a $carea |
| set b [expr $cperi * 4] |
| set c [expr -4 * $dc - $val] |
| set l [expr ((-$b + sqrt($b * $b - (4 * $a * $c))) / (2 * $a))] |
| dict set parameters l [magic::float2spice $l] |
| set w $l |
| dict set parameters w [magic::float2spice $w] |
| } elseif {$l == 0} { |
| # Calculate L from W and value |
| set l [expr (($val + 4 * $dc - 2 * $w * $cperi) / ($w * $carea + 2 * $cperi))] |
| dict set parameters l [magic::float2spice $l] |
| } elseif {$w == 0} { |
| # Calculate W from L and value |
| set w [expr (($val + 4 * $dc - 2 * $l * $cperi) / ($l * $carea + 2 * $cperi))] |
| dict set parameters w [magic::float2spice $w] |
| } |
| if {$w < $wmin} { |
| puts stderr "Capacitor width must be >= $wmin" |
| dict set parameters w $wmin |
| set w $wmin |
| } |
| if {$l < $lmin} { |
| puts stderr "Capacitor length must be >= $lmin" |
| dict set parameters l $lmin |
| set l $lmin |
| } |
| if {($wmax > 0) && ($w > $wmax)} { |
| puts stderr "Capacitor width must be <= $wmax" |
| dict set parameters w $wmax |
| set w $wmax |
| } |
| if {($lmax > 0) && ($l > $lmax)} { |
| puts stderr "Capacitor length must be <= $lmax" |
| dict set parameters l $lmax |
| set l $lmax |
| } |
| if {[catch {expr abs($ccov)}]} { |
| puts stderr "Capacitor contact coverage must be numeric!" |
| dict set parameters ccov 100 |
| } elseif {[expr abs($ccov)] > 100} { |
| puts stderr "Capaitor contact coverage can't be more than 100%" |
| dict set parameters ccov 100 |
| } |
| |
| # Calculate value from L and W |
| set cval [expr ($l * $w * $carea + 2 * ($l + $w) * $cperi - 4 * $dc)] |
| dict set parameters val [magic::float2spice $cval] |
| sky130::compute_ctot $parameters |
| |
| return $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__cap_mim_m3_1_check {parameters} { |
| return [sky130::cap_check $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_mim_m3_2_check {parameters} { |
| return [sky130::cap_check $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # Drawn resistors |
| #---------------------------------------------------------------- |
| |
| #---------------------------------------------------------------- |
| # Resistor defaults: |
| #---------------------------------------------------------------- |
| # User editable values: |
| # |
| # val Resistor value in ohms |
| # w Width |
| # l Length |
| # t Number of turns |
| # m Number devices in Y |
| # nx Number devices in X |
| # snake Use snake geometry (if not present, snake geometry not allowed) |
| # dummy Flag to mark addition of dummy resistor |
| # |
| # Non-user editable values: |
| # |
| # wmin Minimum allowed width |
| # lmin Minimum allowed length |
| # rho Resistance in ohms per square |
| # dw Delta width |
| # term Resistance per terminal |
| # sterm Additional resistance per terminal for snake geometry |
| #---------------------------------------------------------------- |
| |
| #---------------------------------------------------------------- |
| # sky130_fd_pr__res_iso_pw: Specify all user-editable default values and those |
| # needed by sky130_fd_pr__res_iso_pw_check |
| # NOTE: Work in progress. These values need to be corrected. |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_iso_pw_defaults {} { |
| return {w 2.650 l 26.50 m 1 nx 1 wmin 2.650 lmin 26.50 \ |
| rho 975 val 4875 dummy 0 dw 0.25 term 1.0 \ |
| guard 1 endcov 100 full_metal 1 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # rpp1: Specify all user-editable default values and those |
| # needed by rp1_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_po_defaults {} { |
| return {w 0.330 l 1.650 m 1 nx 1 wmin 0.330 lmin 1.650 \ |
| rho 48.2 val 241 dummy 0 dw 0.0 term 0.0 \ |
| sterm 0.0 caplen 0.4 snake 0 guard 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 roverlap 0 endcov 100 \ |
| full_metal 1 hv_guard 0 n_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| # "term" is rho * 0.06, the distance between xpc edge and CONT. |
| proc sky130::sky130_fd_pr__res_high_po_0p35_defaults {} { |
| return {w 0.350 l 0.50 m 1 nx 1 wmin 0.350 lmin 0.50 \ |
| rho 319.8 val 456.857 dummy 0 dw 0.0 term 194.82 \ |
| sterm 0.0 caplen 0 guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_high_po_0p35 \ |
| sky130_fd_pr__res_high_po_0p69 sky130_fd_pr__res_high_po_1p41 \ |
| sky130_fd_pr__res_high_po_2p85 sky130_fd_pr__res_high_po_5p73} \ |
| full_metal 1 wmax 0.350 vias 1 n_guard 0 hv_guard 0 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_high_po_0p69_defaults {} { |
| return {w 0.690 l 1.00 m 1 nx 1 wmin 0.690 lmin 0.50 \ |
| rho 319.8 val 463.480 dummy 0 dw 0.0 term 194.82 \ |
| sterm 0.0 caplen 0 guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_high_po_0p35 \ |
| sky130_fd_pr__res_high_po_0p69 sky130_fd_pr__res_high_po_1p41 \ |
| sky130_fd_pr__res_high_po_2p85 sky130_fd_pr__res_high_po_5p73} \ |
| full_metal 1 wmax 0.690 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_high_po_1p41_defaults {} { |
| return {w 1.410 l 2.00 m 1 nx 1 wmin 1.410 lmin 0.50 \ |
| rho 319.8 val 453.620 dummy 0 dw 0.0 term 194.82 \ |
| sterm 0.0 caplen 0 guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_high_po_0p35 \ |
| sky130_fd_pr__res_high_po_0p69 sky130_fd_pr__res_high_po_1p41 \ |
| sky130_fd_pr__res_high_po_2p85 sky130_fd_pr__res_high_po_5p73} \ |
| full_metal 1 wmax 1.410 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_high_po_2p85_defaults {} { |
| return {w 2.850 l 3.00 m 1 nx 1 wmin 2.850 lmin 0.50 \ |
| rho 319.8 val 336.630 dummy 0 dw 0.0 term 194.82 \ |
| sterm 0.0 caplen 0 guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_high_po_0p35 \ |
| sky130_fd_pr__res_high_po_0p69 sky130_fd_pr__res_high_po_1p41 \ |
| sky130_fd_pr__res_high_po_2p85 sky130_fd_pr__res_high_po_5p73} \ |
| full_metal 1 wmax 2.850 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_high_po_5p73_defaults {} { |
| return {w 5.730 l 6.00 m 1 nx 1 wmin 5.730 lmin 0.50 \ |
| rho 319.8 val 334.870 dummy 0 dw 0.0 term 194.82 \ |
| sterm 0.0 caplen 0 guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_high_po_0p35 \ |
| sky130_fd_pr__res_high_po_0p69 sky130_fd_pr__res_high_po_1p41 \ |
| sky130_fd_pr__res_high_po_2p85 sky130_fd_pr__res_high_po_5p73} \ |
| full_metal 1 wmax 5.730 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| # "term" is rho * 0.06, the distance between xpc edge and CONT. |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p35_defaults {} { |
| return {w 0.350 l 0.50 m 1 nx 1 wmin 0.350 lmin 0.50 \ |
| rho 2000 val 2875.143 dummy 0 dw 0.0 term 188.2 \ |
| sterm 0.0 caplen 0 wmax 0.350 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_xhigh_po_0p35 \ |
| sky130_fd_pr__res_xhigh_po_0p69 sky130_fd_pr__res_xhigh_po_1p41 \ |
| sky130_fd_pr__res_xhigh_po_2p85 sky130_fd_pr__res_xhigh_po_5p73} \ |
| full_metal 1 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p69_defaults {} { |
| return {w 0.690 l 1.00 m 1 nx 1 wmin 0.690 lmin 0.50 \ |
| rho 2000 val 2898.600 dummy 0 dw 0.0 term 188.2 \ |
| sterm 0.0 caplen 0 wmax 0.690 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_xhigh_po_0p35 \ |
| sky130_fd_pr__res_xhigh_po_0p69 sky130_fd_pr__res_xhigh_po_1p41 \ |
| sky130_fd_pr__res_xhigh_po_2p85 sky130_fd_pr__res_xhigh_po_5p73} \ |
| full_metal 1 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_1p41_defaults {} { |
| return {w 1.410 l 2.00 m 1 nx 1 wmin 1.410 lmin 0.50 \ |
| rho 2000 val 2836.900 dummy 0 dw 0.0 term 188.2 \ |
| sterm 0.0 caplen 0 wmax 1.410 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_xhigh_po_0p35 \ |
| sky130_fd_pr__res_xhigh_po_0p69 sky130_fd_pr__res_xhigh_po_1p41 \ |
| sky130_fd_pr__res_xhigh_po_2p85 sky130_fd_pr__res_xhigh_po_5p73} \ |
| full_metal 1 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_2p85_defaults {} { |
| return {w 2.850 l 3.00 m 1 nx 1 wmin 2.850 lmin 0.50 \ |
| rho 2000 val 2105.300 dummy 0 dw 0.0 term 188.2 \ |
| sterm 0.0 caplen 0 wmax 2.850 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_xhigh_po_0p35 \ |
| sky130_fd_pr__res_xhigh_po_0p69 sky130_fd_pr__res_xhigh_po_1p41 \ |
| sky130_fd_pr__res_xhigh_po_2p85 sky130_fd_pr__res_xhigh_po_5p73} \ |
| full_metal 1 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_5p73_defaults {} { |
| return {w 5.730 l 6.00 m 1 nx 1 wmin 5.730 lmin 0.50 \ |
| rho 2000 val 2094.200 dummy 0 dw 0.0 term 188.2 \ |
| sterm 0.0 caplen 0 wmax 5.730 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 \ |
| compatible {sky130_fd_pr__res_xhigh_po_0p35 \ |
| sky130_fd_pr__res_xhigh_po_0p69 sky130_fd_pr__res_xhigh_po_1p41 \ |
| sky130_fd_pr__res_xhigh_po_2p85 sky130_fd_pr__res_xhigh_po_5p73} \ |
| full_metal 1 n_guard 0 hv_guard 0 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # sky130_fd_pr__res_generic_nd: Specify all user-editable default values and those |
| # needed by rdn_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_nd_defaults {} { |
| return {w 0.420 l 2.100 m 1 nx 1 wmin 0.42 lmin 2.10 \ |
| rho 120 val 600.0 dummy 0 dw 0.05 term 0.0 \ |
| sterm 0.0 caplen 0.4 snake 0 guard 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 roverlap 0 endcov 100 \ |
| full_metal 1 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_nd__hv_defaults {} { |
| return {w 0.420 l 2.100 m 1 nx 1 wmin 0.42 lmin 2.10 \ |
| rho 120 val 600.0 dummy 0 dw 0.02 term 0.0 \ |
| sterm 0.0 caplen 0.4 snake 0 guard 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 roverlap 0 endcov 100 \ |
| full_metal 1 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # sky130_fd_pr__res_generic_pd: Specify all user-editable default values and those |
| # needed by rdp_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_pd_defaults {} { |
| return {w 0.420 l 2.100 m 1 nx 1 wmin 0.42 lmin 2.10 \ |
| rho 197 val 985.0 dummy 0 dw 0.02 term 0.0 \ |
| sterm 0.0 caplen 0.60 snake 0 guard 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 roverlap 0 endcov 100 \ |
| full_metal 1 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_pd__hv_defaults {} { |
| return {w 0.420 l 2.100 m 1 nx 1 wmin 0.42 lmin 2.10 \ |
| rho 197 val 985.0 dummy 0 dw 0.02 term 0.0 \ |
| sterm 0.0 caplen 0.60 snake 0 guard 1 \ |
| glc 1 grc 1 gtc 1 gbc 1 roverlap 0 endcov 100 \ |
| full_metal 1 vias 1 \ |
| viagb 0 viagt 0 viagl 0 viagr 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # sky130_fd_pr__res_generic_l1: Specify all user-editable default values and those needed |
| # by sky130_fd_pr__res_generic_l1_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_l1_defaults {} { |
| return {w 0.170 l 0.170 m 1 nx 1 wmin 0.17 lmin 0.17 \ |
| rho 12.8 val 12.8 dummy 0 dw 0.0 term 0.0 snake 0 \ |
| roverlap 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # sky130_fd_pr__res_generic_m1: Specify all user-editable default values and those needed |
| # by sky130_fd_pr__res_generic_m1_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m1_defaults {} { |
| return {w 0.140 l 0.140 m 1 nx 1 wmin 0.14 lmin 0.14 \ |
| rho 0.125 val 0.125 dummy 0 dw 0.0 term 0.0 \ |
| roverlap 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # sky130_fd_pr__res_generic_m2: Specify all user-editable default values and those needed |
| # by sky130_fd_pr__res_generic_m2_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m2_defaults {} { |
| return {w 0.140 l 0.140 m 1 nx 1 wmin 0.14 lmin 0.14 \ |
| rho 0.125 val 0.125 dummy 0 dw 0.0 term 0.0 \ |
| roverlap 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # sky130_fd_pr__res_generic_m3: Specify all user-editable default values and those needed |
| # by sky130_fd_pr__res_generic_m3_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m3_defaults {} { |
| return {w 0.300 l 0.300 m 1 nx 1 wmin 0.30 lmin 0.30 \ |
| rho 0.047 val 0.047 dummy 0 dw 0.0 term 0.0 \ |
| roverlap 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # Additional entries for sky130_fd_pr__res_generic_m4 and sky130_fd_pr__res_generic_m5, depending on the |
| # back-end metal stack. |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m4_defaults {} { |
| return {w 0.300 l 0.300 m 1 nx 1 wmin 0.30 lmin 0.30 \ |
| rho 0.047 val 0.047 dummy 0 dw 0.0 term 0.0 \ |
| roverlap 0} |
| } |
| proc sky130::sky130_fd_pr__res_generic_m5_defaults {} { |
| return {w 1.600 l 1.600 m 1 nx 1 wmin 1.60 lmin 1.60 \ |
| rho 0.029 val 0.029 dummy 0 dw 0.0 term 0.0 \ |
| roverlap 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # resistor: Conversion from SPICE netlist parameters to toolkit |
| #---------------------------------------------------------------- |
| |
| proc sky130::res_convert {parameters} { |
| set pdkparams [dict create] |
| dict for {key value} $parameters { |
| switch -nocase $key { |
| l - |
| w { |
| # Length and width are converted to units of microns |
| set value [magic::spice2float $value] |
| # set value [expr $value * 1e6] |
| set value [magic::3digitpastdecimal $value] |
| dict set pdkparams [string tolower $key] $value |
| } |
| } |
| } |
| return $pdkparams |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_iso_pw_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_po_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_high_po_0p35_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_0p69_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_1p41_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_2p85_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_5p73_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p35_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p69_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_1p41_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_2p85_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_5p73_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_nd_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_pd_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_nd__hv_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_pd__hv_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_l1_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m1_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m2_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m3_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m4_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_generic_m5_convert {parameters} { |
| return [sky130::res_convert $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # resistor: Interactively specifies the fixed layout parameters |
| #---------------------------------------------------------------- |
| |
| proc sky130::res_dialog {device parameters} { |
| # Editable fields: w, l, t, nx, m, val |
| # Checked fields: |
| |
| magic::add_entry val "Value (ohms)" $parameters |
| if {[dict exists $parameters snake]} { |
| sky130::compute_ltot $parameters |
| magic::add_message ltot "Total length (um)" $parameters |
| } |
| magic::add_entry l "Length (um)" $parameters |
| magic::add_entry w "Width (um)" $parameters |
| magic::add_entry nx "X Repeat" $parameters |
| magic::add_entry m "Y Repeat" $parameters |
| if {[dict exists $parameters endcov]} { |
| magic::add_entry endcov "End contact coverage (%)" $parameters |
| } |
| |
| if {[dict exists $parameters compatible]} { |
| set sellist [dict get $parameters compatible] |
| magic::add_selectlist gencell "Device type" $sellist $parameters $device |
| } |
| |
| # magic::add_checkbox dummy "Add dummy" $parameters |
| |
| if {[dict exists $parameters snake]} { |
| magic::add_checkbox snake "Use snake geometry" $parameters |
| } |
| if {[dict exists $parameters roverlap]} { |
| if {[dict exists $parameters endcov]} { |
| magic::add_checkbox roverlap "Overlap at end contact" $parameters |
| } else { |
| magic::add_checkbox roverlap "Overlap at ends" $parameters |
| } |
| } |
| if {[dict exists $parameters guard]} { |
| magic::add_checkbox guard "Add guard ring" $parameters |
| |
| if {[dict exists $parameters hv_guard]} { |
| magic::add_checkbox hv_guard "High-voltage guard ring" $parameters |
| } |
| if {[dict exists $parameters n_guard]} { |
| magic::add_checkbox n_guard "N-well connected guard ring" $parameters |
| } |
| if {[dict exists $parameters full_metal]} { |
| magic::add_checkbox full_metal "Full metal guard ring" $parameters |
| } |
| if {[dict exists $parameters glc]} { |
| magic::add_checkbox glc "Add left guard ring contact" $parameters |
| } |
| if {[dict exists $parameters grc]} { |
| magic::add_checkbox grc "Add right guard ring contact" $parameters |
| } |
| if {[dict exists $parameters gtc]} { |
| magic::add_checkbox gtc "Add top guard ring contact" $parameters |
| } |
| if {[dict exists $parameters gbc]} { |
| magic::add_checkbox gbc "Add bottom guard ring contact" $parameters |
| } |
| |
| |
| magic::add_entry viagb "Bottom guard ring via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagt "Top guard ring via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagr "Right guard ring via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagl "Left guard ring via coverage \[+/-\](%)" $parameters |
| } |
| |
| if {[dict exists $parameters vias]} { |
| magic::add_checkbox vias "Add vias over contacts" $parameters |
| } |
| |
| if {[dict exists $parameters snake]} { |
| magic::add_dependency sky130::res_recalc $device sky130 l w val nx snake |
| } else { |
| magic::add_dependency sky130::res_recalc $device sky130 l w val nx |
| } |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_iso_pw_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_iso_pw $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_po_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_po $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_high_po_0p35_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_high_po_0p35 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_high_po_0p69_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_high_po_0p69 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_high_po_1p41_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_high_po_1p41 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_high_po_2p85_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_high_po_2p85 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_high_po_5p73_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_high_po_5p73 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p35_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_xhigh_po_0p35 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p69_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_xhigh_po_0p69 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_1p41_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_xhigh_po_1p41 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_2p85_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_xhigh_po_2p85 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_5p73_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_xhigh_po_5p73 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_nd_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_nd $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_pd_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_pd $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_nd__hv_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_nd__hv $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_pd__hv_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_pd__hv $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_l1_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_l1 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m1_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_m1 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m2_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_m2 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m3_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_m3 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m4_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_m4 $parameters |
| } |
| proc sky130::sky130_fd_pr__res_generic_m5_dialog {parameters} { |
| sky130::res_dialog sky130_fd_pr__res_generic_m5 $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| # Resistor: Draw a single device in straight geometry |
| #---------------------------------------------------------------- |
| |
| proc sky130::res_device {parameters} { |
| # Epsilon for avoiding round-off errors |
| set eps 0.0005 |
| |
| # Set local default values if they are not in parameters |
| set endcov 0 ;# percent coverage of end contacts |
| set roverlap 0 ;# overlap resistors at end contacts |
| set well_res_overlap 0 ;# not a well resistor |
| set end_contact_type "" ;# no contacts for metal resistors |
| set end_overlap_cont 0 ;# additional end overlap on sides |
| set vias 0 ;# add vias over contacts |
| set res_idtype none |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| if {![dict exists $parameters end_contact_size]} { |
| set end_contact_size $contact_size |
| } |
| |
| # Draw the resistor and endcaps |
| pushbox |
| box size 0 0 |
| pushbox |
| set hw [/ $w 2.0] |
| set hl [/ $l 2.0] |
| box grow n ${hl}um |
| box grow s ${hl}um |
| box grow e ${hw}um |
| box grow w ${hw}um |
| |
| pushbox |
| box grow n ${res_to_endcont}um |
| box grow s ${res_to_endcont}um |
| if {$well_res_overlap > 0} { |
| set well_extend [+ ${well_res_overlap} [/ ${end_contact_size} 2.0] ${end_surround}] |
| box grow n ${well_extend}um |
| box grow s ${well_extend}um |
| paint ${well_res_type} |
| } else { |
| paint ${end_type} |
| } |
| set cext [sky130::getbox] |
| popbox |
| |
| if {$well_res_overlap > 0} { |
| erase ${well_res_type} |
| } else { |
| erase ${end_type} |
| } |
| paint ${res_type} |
| if {"$res_idtype" != "none"} { |
| box grow c 2 |
| paint ${res_idtype} |
| } |
| popbox |
| |
| # Reduce contact sizes by (end type) surround so that |
| # the contact area edges match the device type width. |
| # (Minimum dimensions will be enforced by the contact drawing routine) |
| set epl [- ${w} [* ${end_surround} 2]] ;# end contact width |
| |
| # Reduce end material size for well resistor types |
| if {$well_res_overlap > 0} { |
| set epl [- ${epl} [* ${well_res_overlap} 2]] |
| } |
| |
| # Reduce by coverage percentage unless overlapping at contacts |
| if {(${roverlap} == 0) && (${endcov} > 0)} { |
| set cpl [* ${epl} [/ ${endcov} 100.0]] |
| } else { |
| set cpl $epl |
| } |
| |
| # Ensure additional overlap of diffusion contact if required |
| set dov [* ${end_overlap_cont} 2] |
| if {[- ${epl} ${cpl}] < $dov} { |
| set cpl [- ${epl} $dov] ;# additional end contact width |
| } |
| |
| set hepl [+ [/ ${epl} 2.0] ${end_surround}] |
| set hesz [/ ${end_contact_size} 2.0] |
| |
| # LV substrate diffusion types have a different surround requirement |
| set lv_sub_types {"psd" "nsd"} |
| if {[lsearch $lv_sub_types $end_type] < 0} { |
| set hesz [+ ${hesz} ${end_surround}] |
| } |
| |
| # Top end material & contact |
| pushbox |
| box move n ${hl}um |
| box move n ${res_to_endcont}um |
| |
| pushbox |
| box size 0 0 |
| box grow n ${hesz}um |
| box grow s ${hesz}um |
| box grow e ${hepl}um |
| box grow w ${hepl}um |
| paint ${end_type} |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| popbox |
| |
| if {${end_contact_type} != ""} { |
| # Draw via over contact first |
| if {$vias != 0} { |
| pushbox |
| set ch $res_to_endcont |
| if {$ch < $via_size} {set ch $via_size} |
| set cw $epl |
| if {$cw < $via_size} {set cw $via_size} |
| box grow n [/ $via_size 2]um |
| box grow s [- $ch [/ $via_size 2]]um |
| box grow w [/ $cw 2]um |
| box grow e [/ $cw 2]um |
| sky130::mcon_draw |
| popbox |
| } |
| set cext [sky130::unionbox $cext [sky130::draw_contact ${cpl} 0 \ |
| ${end_surround} ${metal_surround} ${end_contact_size} \ |
| ${end_type} ${end_contact_type} li horz]] |
| } |
| popbox |
| |
| # Bottom end material & contact |
| pushbox |
| box move s ${hl}um |
| box move s ${res_to_endcont}um |
| |
| pushbox |
| box size 0 0 |
| box grow n ${hesz}um |
| box grow s ${hesz}um |
| box grow e ${hepl}um |
| box grow w ${hepl}um |
| paint ${end_type} |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| popbox |
| |
| if {${end_contact_type} != ""} { |
| # Draw via over contact first |
| if {$vias != 0} { |
| pushbox |
| set ch $res_to_endcont |
| if {$ch < $via_size} {set ch $via_size} |
| set cw $epl |
| if {$cw < $via_size} {set cw $via_size} |
| box grow n [- $ch [/ $via_size 2]]um |
| box grow s [/ $via_size 2]um |
| box grow w [/ $cw 2]um |
| box grow e [/ $cw 2]um |
| sky130::mcon_draw |
| popbox |
| } |
| set cext [sky130::unionbox $cext [sky130::draw_contact ${cpl} 0 \ |
| ${end_surround} ${metal_surround} ${end_contact_size} \ |
| ${end_type} ${end_contact_type} li horz]] |
| } |
| popbox |
| |
| popbox |
| return $cext |
| } |
| |
| #---------------------------------------------------------------- |
| # Resistor: Draw a single device in snake geometry |
| #---------------------------------------------------------------- |
| |
| proc sky130::res_snake_device {nf parameters} { |
| # nf is the number of fingers of the snake geometry |
| |
| # Epsilon for avoiding round-off errors |
| set eps 0.0005 |
| |
| # Set local default values if they are not in parameters |
| set endcov 100 ;# percent coverage of end contacts |
| set well_res_overlap 0 ;# not a well resistor |
| set end_contact_type "" ;# no contacts for metal resistors |
| set mask_clearance 0 ;# additional length to clear mask |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| if {![dict exists $parameters end_contact_size]} { |
| set end_contact_size $contact_size |
| } |
| |
| # Compute half width and length |
| set hw [/ $w 2.0] |
| set hl [/ $l 2.0] |
| |
| # Reduce contact sizes by (end type) surround so that |
| # the contact area edges match the device type width. |
| # (Minimum dimensions will be enforced by the contact drawing routine) |
| set epl [- ${w} [* ${end_surround} 2]] ;# end contact width |
| |
| # Reduce contact size for well resistor types |
| if {$well_res_overlap > 0} { |
| set epl [- ${epl} [* ${well_res_overlap} 2]] |
| } |
| |
| # Reduce contact part of end by coverage percentage |
| if {${endcov} > 0} { |
| set cpl [* ${epl} [/ ${endcov} 100.0]] |
| } else { |
| set cpl $epl |
| } |
| |
| set hepl [+ [/ ${epl} 2.0] ${end_surround}] |
| set hesz [+ [/ ${end_contact_size} 2.0] ${end_surround}] |
| |
| pushbox |
| box size 0 0 ;# Position is taken from caller |
| |
| # Front end contact (always bottom) |
| pushbox |
| box move s ${hl}um |
| pushbox |
| box move s ${mask_clearance}um |
| box move s ${res_to_endcont}um |
| |
| pushbox |
| box size 0 0 |
| box grow n ${hesz}um |
| box grow s ${hesz}um |
| box grow e ${hepl}um |
| box grow w ${hepl}um |
| paint ${end_type} |
| set cext [sky130::getbox] |
| popbox |
| |
| if {${end_contact_type} != ""} { |
| set cext [sky130::draw_contact ${cpl} 0 \ |
| ${end_surround} ${metal_surround} ${end_contact_size} \ |
| ${end_type} ${end_contact_type} li horz] |
| } |
| popbox |
| |
| # Draw portion between resistor end and contact. |
| box grow e ${hw}um |
| box grow w ${hw}um |
| pushbox |
| box grow s ${mask_clearance}um |
| paint ${res_type} |
| popbox |
| box move s ${mask_clearance}um |
| box grow s ${res_to_endcont}um |
| if {$well_res_overlap > 0} { |
| set well_extend [+ ${well_res_overlap} [/ ${end_contact_size} 2.0] ${end_surround}] |
| box grow s ${well_extend}um |
| paint ${well_res_type} |
| } else { |
| paint ${end_type} |
| } |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| popbox |
| |
| # Draw the resistor and endcaps |
| pushbox |
| box grow n ${hl}um |
| box grow s ${hl}um |
| box grow e ${hw}um |
| box grow w ${hw}um |
| |
| # Capture these extents in the bounding box in case both contacts |
| # are on one side. |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| |
| set deltax [+ ${res_spacing} ${w}] |
| set deltay [- ${l} ${w}] |
| for {set i 0} {$i < [- $nf 1]} {incr i} { |
| paint ${res_type} |
| pushbox |
| if {[% $i 2] == 0} { |
| box move n ${deltay}um |
| } |
| box height ${w}um |
| box width ${deltax}um |
| paint ${res_type} |
| popbox |
| box move e ${deltax}um |
| } |
| paint ${res_type} |
| # Capture these extents in the bounding box |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| popbox |
| |
| # Move box to last finger |
| set lastf [* [- $nf 1] $deltax] |
| box move e ${lastf}um |
| |
| # Back-end contact (top or bottom, depending if odd or even turns) |
| pushbox |
| |
| if {[% $nf 2] == 1} { |
| set dir n |
| } else { |
| set dir s |
| } |
| box move $dir ${hl}um |
| pushbox |
| box move $dir ${mask_clearance}um |
| box move $dir ${res_to_endcont}um |
| |
| pushbox |
| box size 0 0 |
| box grow n ${hesz}um |
| box grow s ${hesz}um |
| box grow e ${hepl}um |
| box grow w ${hepl}um |
| paint ${end_type} |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| popbox |
| |
| if {${end_contact_type} != ""} { |
| set cext [sky130::unionbox $cext [sky130::draw_contact ${cpl} 0 \ |
| ${end_surround} ${metal_surround} ${end_contact_size} \ |
| ${end_type} ${end_contact_type} li horz]] |
| } |
| popbox |
| # Draw portion between resistor end and contact. |
| box grow e ${hw}um |
| box grow w ${hw}um |
| pushbox |
| box grow $dir ${mask_clearance}um |
| paint ${res_type} |
| popbox |
| box move $dir ${mask_clearance}um |
| box grow $dir ${res_to_endcont}um |
| |
| if {$well_res_overlap > 0} { |
| set well_extend [+ ${well_res_overlap} [/ ${end_contact_size} 2.0] ${end_surround}] |
| box grow $dir ${well_extend}um |
| paint ${well_res_type} |
| } else { |
| paint ${end_type} |
| } |
| popbox |
| |
| popbox |
| return $cext |
| } |
| |
| #---------------------------------------------------------------- |
| # Resistor: Draw the tiled device |
| #---------------------------------------------------------------- |
| |
| proc sky130::res_draw {parameters} { |
| tech unlock * |
| set savesnap [snap] |
| snap internal |
| |
| # Set defaults if they are not in parameters |
| set snake 0 ;# some resistors don't allow snake geometry |
| set roverlap 0 ;# overlap resistors at contacts |
| set guard 0 ;# draw a guard ring |
| set plus_diff_type nsd ;# guard ring diffusion type |
| set overlap_compress 0 ;# special Y distance compression |
| set well_res_overlap 0 ;# additional well extension behind contact |
| set res_diff_spacing 0 ;# spacing from resistor to diffusion |
| set res_idtype none |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # For devices where inter-device space is smaller than device-to-guard ring |
| if {![dict exists $parameters end_to_end_space]} { |
| set end_to_end_space $end_spacing |
| } |
| |
| if {![dict exists $parameters end_contact_size]} { |
| set end_contact_size $contact_size |
| } |
| |
| # Normalize distance units to microns |
| set w [magic::spice2float $w] |
| set l [magic::spice2float $l] |
| |
| pushbox |
| box values 0 0 0 0 |
| |
| # Determine the base device dimensions by drawing one device |
| # while all layers are locked (nothing drawn). This allows the |
| # base drawing routine to do complicated geometry without having |
| # to duplicate it here with calculations. |
| |
| tech lock * |
| set nf $nx |
| if {($snake == 1) && ($nx == 1)} {set snake 0} |
| if {$snake == 1} { |
| set bbox [sky130::res_snake_device $nf $parameters] |
| set nx 1 |
| } else { |
| set bbox [sky130::res_device $parameters] |
| } |
| # puts stdout "Diagnostic: Device bounding box e $bbox (um)" |
| tech unlock * |
| |
| set fw [- [lindex $bbox 2] [lindex $bbox 0]] |
| set fh [- [lindex $bbox 3] [lindex $bbox 1]] |
| set lw [+ [lindex $bbox 2] [lindex $bbox 0]] |
| set lh [+ [lindex $bbox 3] [lindex $bbox 1]] |
| |
| # Determine tile width and height (depends on overlap) |
| # Snake resistors cannot overlap. |
| # However, snake resistors with an odd number of fingers can |
| # compress the space if overlap_compress is defined |
| |
| if {($roverlap == 1) && ($snake == 1) && ([% $nf 2] == 1) && ($m > 1)} { |
| set dy [- $fh $overlap_compress] |
| } elseif {($roverlap == 0) || ($snake == 1)} { |
| set dy [+ $fh $end_to_end_space] |
| } else { |
| # overlap poly |
| set dy [- $fh [+ [* [+ $end_surround $well_res_overlap] 2.0] $end_contact_size]] |
| } |
| set dx [+ $fw $res_spacing] |
| |
| # Determine core width and height |
| set corex [+ [* [- $nx 1] $dx] $fw] |
| set corey [+ [* [- $m 1] $dy] $fh] |
| set corellx [/ [+ [- $corex $fw] $lw] 2.0] |
| set corelly [/ [+ [- $corey $fh] $lh] 2.0] |
| |
| set lv_sub_types {"psd" "nsd"} |
| if {[lsearch $lv_sub_types $plus_diff_type] >= 0} { |
| set guard_diff_surround 0 |
| } else { |
| set guard_diff_surround ${diff_surround} |
| } |
| |
| if {$guard != 0} { |
| # Calculate guard ring size (measured to contact center) |
| set gx [+ $corex [* 2.0 [+ $res_diff_spacing $guard_diff_surround]] $contact_size] |
| set gy [+ $corey [* 2.0 [+ $end_spacing $guard_diff_surround]] $contact_size] |
| |
| # Draw the guard ring first, because well resistors are on the substrate plane |
| sky130::guard_ring $gx $gy $parameters |
| } |
| |
| pushbox |
| box move w ${corellx}um |
| box move s ${corelly}um |
| # puts "Device position at = [sky130::getbox]" |
| for {set xp 0} {$xp < $nx} {incr xp} { |
| pushbox |
| for {set yp 0} {$yp < $m} {incr yp} { |
| if {$snake == 1} { |
| sky130::res_snake_device $nf $parameters |
| } else { |
| sky130::res_device $parameters |
| } |
| box move n ${dy}um |
| } |
| popbox |
| box move e ${dx}um |
| } |
| popbox |
| popbox |
| |
| snap $savesnap |
| tech revert |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_po_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| } else { |
| set gsubtype psub |
| } |
| |
| set newdict [dict create \ |
| res_type npres \ |
| end_type poly \ |
| end_contact_type pc \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing 0.48 \ |
| end_to_end_space 0.52 \ |
| res_to_endcont $res_to_cont \ |
| res_spacing $poly_spacing \ |
| res_diff_spacing 0.48 \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_high_po_0p35_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.785 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type ppres \ |
| res_idtype res0p35 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_high_po_0p69_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.615 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type ppres \ |
| res_idtype res0p69 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_high_po_1p41_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.525 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type ppres \ |
| res_idtype res1p41 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_high_po_2p85_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.525 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type ppres \ |
| res_idtype res2p85 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_high_po_5p73_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.525 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type ppres \ |
| res_idtype res5p73 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p35_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.785 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type xpres \ |
| res_idtype res0p35 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p69_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.615 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type xpres \ |
| res_idtype res0p69 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_1p41_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.525 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type xpres \ |
| res_idtype res1p41 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_2p85_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.525 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type xpres \ |
| res_idtype res2p85 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_5p73_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| # Handle options related to guard ring type (high/low voltage, nwell/psub) |
| if {[dict exists $parameters hv_guard]} { |
| set use_hv_guard [dict get $parameters hv_guard] |
| } else { |
| set use_hv_guard 0 |
| } |
| if {[dict exists $parameters n_guard]} { |
| set use_n_guard [dict get $parameters n_guard] |
| } else { |
| set use_n_guard 0 |
| } |
| |
| if {$use_hv_guard == 1} { |
| if {$use_n_guard == 1} { |
| set gdifftype mvnsd |
| set gdiffcont mvnsc |
| } else { |
| set gdifftype mvpsd |
| set gdiffcont mvpsc |
| } |
| set gsurround 0.33 |
| } else { |
| if {$use_n_guard == 1} { |
| set gdifftype nsd |
| set gdiffcont nsc |
| } else { |
| set gdifftype psd |
| set gdiffcont psc |
| } |
| set gsurround $sub_surround |
| } |
| if {$use_n_guard == 1} { |
| set gsubtype nwell |
| set gresdiff_spacing 0.525 |
| set gresdiff_end 0.525 |
| } else { |
| set gsubtype psub |
| set gresdiff_spacing 0.48 |
| set gresdiff_end 0.48 |
| } |
| |
| set newdict [dict create \ |
| res_type xpres \ |
| res_idtype res5p73 \ |
| end_type xpc \ |
| end_contact_type xpc \ |
| end_contact_size 0 \ |
| plus_diff_type $gdifftype \ |
| plus_contact_type $gdiffcont \ |
| sub_type $gsubtype \ |
| guard_sub_surround $gsurround \ |
| end_surround $poly_surround \ |
| end_spacing $gresdiff_end \ |
| end_to_end_space 0.52 \ |
| end_contact_size 0.19 \ |
| res_to_endcont 1.985 \ |
| res_spacing 1.24 \ |
| res_diff_spacing $gresdiff_spacing \ |
| mask_clearance 0.52 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_nd_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| res_type rdn \ |
| end_type ndiff \ |
| end_contact_type ndc \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| sub_type psub \ |
| end_surround $diff_surround \ |
| end_spacing 0.44 \ |
| res_to_endcont 0.37 \ |
| res_spacing 0.30 \ |
| res_diff_spacing 0.44 \ |
| mask_clearance 0.22 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_nd__hv_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| res_type mvrdn \ |
| end_type mvndiff \ |
| end_contact_type mvndc \ |
| plus_diff_type mvpsd \ |
| plus_contact_type mvpsc \ |
| sub_type psub \ |
| end_surround $diff_surround \ |
| end_spacing 0.44 \ |
| res_to_endcont 0.37 \ |
| res_spacing 0.30 \ |
| res_diff_spacing 0.44 \ |
| mask_clearance 0.22 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_pd_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| res_type rdp \ |
| end_type pdiff \ |
| end_contact_type pdc \ |
| plus_diff_type nsd \ |
| plus_contact_type nsc \ |
| sub_type nwell \ |
| end_surround $diff_surround \ |
| end_spacing 0.44 \ |
| res_to_endcont 0.37 \ |
| res_spacing $diff_spacing \ |
| res_diff_spacing 0.44 \ |
| mask_clearance 0.22 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_pd__hv_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| res_type mvrdp \ |
| end_type mvpdiff \ |
| end_contact_type mvpdc \ |
| plus_diff_type mvnsd \ |
| plus_contact_type mvnsc \ |
| sub_type nwell \ |
| end_surround $diff_surround \ |
| guard_sub_surround 0.33 \ |
| end_spacing 0.44 \ |
| res_to_endcont 0.37 \ |
| res_spacing 0.30 \ |
| res_diff_spacing 0.44 \ |
| mask_clearance 0.22 \ |
| overlap_compress 0.36 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_iso_pw_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| well_res_type pwell \ |
| res_type rpw \ |
| end_type psd \ |
| end_contact_type psc \ |
| plus_diff_type nsd \ |
| plus_contact_type nsc \ |
| sub_type dnwell \ |
| sub_surround 0.23 \ |
| guard_sub_type nwell \ |
| guard_sub_surround 0.63 \ |
| end_surround $diff_surround \ |
| end_spacing 0.63 \ |
| end_to_end_space 1.15 \ |
| end_overlap_cont 0.06 \ |
| end_contact_size 0.53 \ |
| overlap_compress -0.17 \ |
| res_to_endcont 0.265 \ |
| res_spacing 1.4 \ |
| res_diff_spacing 0.63 \ |
| well_res_overlap 0.2 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_l1_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 0 \ |
| res_type rli \ |
| end_type li \ |
| end_surround 0.0 \ |
| end_spacing 0.0 \ |
| res_to_endcont 0.2 \ |
| end_to_end_space 0.23 \ |
| res_spacing $metal_spacing \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m1_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 0 \ |
| res_type rm1 \ |
| end_type m1 \ |
| end_surround 0.0 \ |
| end_spacing 0.0 \ |
| end_to_end_space 0.28 \ |
| res_to_endcont 0.2 \ |
| res_spacing $mmetal_spacing \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m2_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 0 \ |
| res_type rm2 \ |
| end_type m2 \ |
| end_surround 0.0 \ |
| end_spacing 0.0 \ |
| end_to_end_space 0.28 \ |
| res_to_endcont 0.2 \ |
| res_spacing $mmetal_spacing \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m3_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 0 \ |
| res_type rm3 \ |
| end_type m3 \ |
| end_surround 0.0 \ |
| end_spacing 0.0 \ |
| end_to_end_space 0.28 \ |
| res_to_endcont 0.2 \ |
| res_spacing $mmetal_spacing \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_generic_m4_draw {parameters} { |
| |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 0 \ |
| res_type rm4 \ |
| end_type m4 \ |
| end_surround 0.0 \ |
| end_spacing 0.0 \ |
| end_to_end_space 0.28 \ |
| res_to_endcont 0.2 \ |
| res_spacing $mmetal_spacing \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m5_draw {parameters} { |
| # Set a local variable for each rule in ruleset |
| foreach key [dict keys $sky130::ruleset] { |
| set $key [dict get $sky130::ruleset $key] |
| } |
| |
| set newdict [dict create \ |
| guard 0 \ |
| res_type rm5 \ |
| end_type m5 \ |
| end_surround 0.0 \ |
| end_spacing 0.0 \ |
| end_to_end_space 1.6 \ |
| res_to_endcont 0.2 \ |
| res_spacing $mmetal_spacing \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::res_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| # Resistor total length computation |
| #---------------------------------------------------------------- |
| |
| proc sky130::compute_ltot {parameters} { |
| # In case snake not defined |
| set snake 0 |
| set caplen 0 |
| |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| set l [magic::spice2float $l] |
| set l [magic::3digitpastdecimal $l] |
| |
| # Compute total length. Use catch to prevent error in batch/scripted mode. |
| if {$snake == 1} { |
| catch {set magic::ltot_val [expr ($caplen * ($nx - 1)) + ($l * $nx) + ($nx - 1)]} |
| } else { |
| catch {set magic::ltot_val $l} |
| } |
| } |
| |
| #---------------------------------------------------------------- |
| # resistor: Check device parameters for out-of-bounds values |
| #---------------------------------------------------------------- |
| |
| proc sky130::res_check {device parameters} { |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| set snake 0 |
| set guard 0 |
| set sterm 0.0 |
| set caplen 0 |
| set wmax 0 |
| |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Normalize distance units to microns |
| set w [magic::spice2float $w] |
| set w [magic::3digitpastdecimal $w] |
| set l [magic::spice2float $l] |
| set l [magic::3digitpastdecimal $l] |
| |
| set val [magic::spice2float $val] |
| set rho [magic::spice2float $rho] |
| |
| # nf, m must be integer |
| if {![string is int $nx]} { |
| puts stderr "X repeat must be an integer!" |
| dict set parameters nx 1 |
| } |
| if {![string is int $m]} { |
| puts stderr "Y repeat must be an integer!" |
| dict set parameters m 1 |
| } |
| |
| # Width always needs to be specified |
| if {$w < $wmin} { |
| puts stderr "Resistor width must be >= $wmin um" |
| dict set parameters w $wmin |
| } |
| if {$wmax > 0 && $w > $wmax} { |
| puts stderr "Resistor width must be <= $wmax um" |
| dict set parameters w $wmax |
| } |
| |
| # Val and W specified - no L |
| if {$l == 0} { |
| set l [expr ($w - $dw) * $val / $rho] |
| set l [magic::3digitpastdecimal $l] |
| set stringval [magic::float2spice $val] |
| dict set parameters l [magic::float2spice [expr $l * 1e-6]] |
| # L and W specified - ignore Val if specified |
| } else { |
| if {$snake == 0} { |
| set val [expr (2 * $term + $l * $rho) / ($w - $dw)] |
| } else { |
| set val [expr $rho * ($nx - 1) + ((2 * ($term + $sterm)) \ |
| + ($rho * $l * $nx) + ($rho * $caplen * ($nx - 1))) \ |
| / ($w - $dw)] |
| } |
| set val [magic::float2spice $val] |
| dict set parameters val $val |
| } |
| if {$l < $lmin} { |
| puts stderr "Resistor length must be >= $lmin um" |
| dict set parameters l $lmin |
| } |
| if {$nx < 1} { |
| puts stderr "X repeat must be >= 1" |
| dict set parameters nx 1 |
| } |
| if {$m < 1} { |
| puts stderr "Y repeat must be >= 1" |
| dict set parameters m 1 |
| } |
| |
| # Snake resistors cannot have width greater than length |
| if {$snake == 1} { |
| if {$w > $l} { |
| puts stderr "Snake resistor width must be < length" |
| dict set parameters w $l |
| } |
| } |
| |
| # Check via coverage for syntax |
| if {$guard == 1} { |
| if {[catch {expr abs($viagb)}]} { |
| puts stderr "Guard ring bottom via coverage must be numeric!" |
| dict set parameters viagb 0 |
| } elseif {[expr abs($viagb)] > 100} { |
| puts stderr "Guard ring bottom via coverage can't be more than 100%" |
| dict set parameters viagb 100 |
| } |
| if {[catch {expr abs($viagt)}]} { |
| puts stderr "Guard ring top via coverage must be numeric!" |
| dict set parameters viagt 0 |
| } elseif {[expr abs($viagt)] > 100} { |
| puts stderr "Guard ring top via coverage can't be more than 100%" |
| dict set parameters viagt 100 |
| } |
| if {[catch {expr abs($viagr)}]} { |
| puts stderr "Guard ring right via coverage must be numeric!" |
| dict set parameters viagr 0 |
| } elseif {[expr abs($viagr)] > 100} { |
| puts stderr "Guard ring right via coverage can't be more than 100%" |
| dict set parameters viagr 100 |
| } |
| if {[catch {expr abs($viagl)}]} { |
| puts stderr "Guard ring left via coverage must be numeric!" |
| dict set parameters viagl 0 |
| } elseif {[expr abs($viagl)] > 100} { |
| puts stderr "Guard ring left via coverage can't be more than 100%" |
| dict set parameters viagl 100 |
| } |
| } |
| |
| # Diffusion resistors must satisfy diffusion-to-tap spacing of 20um. |
| # Therefore the maximum of guard ring width or height cannot exceed 40um. |
| # If in violation, reduce counts first, as these are easiest to recover |
| # by duplicating the device and overlapping the wells. |
| if {$device == "rdn" || $device == "rdp"} { |
| set origm $m |
| set orignx $nx |
| while true { |
| set xext [expr ($w + 0.8) * $nx + 1.0] |
| set yext [expr ($l + 1.7) * $m + 1.7] |
| if {[expr min($xext, $yext)] > 40.0} { |
| if {$yext > 40.0 && $m > 1} { |
| incr m -1 |
| } elseif {$xext > 40.0 && $nx > 1} { |
| incr nx -1 |
| } elseif {$yext > 40.0} { |
| set l 36.6 |
| puts -nonewline stderr "Diffusion resistor length must be < 36.6 um" |
| puts stderr " to avoid tap spacing violation." |
| dict set parameters l $l |
| } elseif {$xext > 40.0} { |
| set w 38.2 |
| puts -nonewline stderr "Diffusion resistor width must be < 38.2 um" |
| puts stderr " to avoid tap spacing violation." |
| dict set parameters w $w |
| } |
| } else { |
| break |
| } |
| } |
| if {$m != $origm} { |
| puts stderr "Y repeat reduced to prevent tap distance violation" |
| dict set parameters m $m |
| } |
| if {$nx != $orignx} { |
| puts stderr "X repeat reduced to prevent tap distance violation" |
| dict set parameters nx $nx |
| } |
| } |
| sky130::compute_ltot $parameters |
| return $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__res_iso_pw_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_iso_pw $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_po_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_po $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_high_po_0p35_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_high_po_0p35 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_0p69_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_high_po_0p69 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_1p41_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_high_po_1p41 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_2p85_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_high_po_2p85 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_high_po_5p73_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_high_po_5p73 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p35_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_xhigh_po_0p35 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_0p69_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_xhigh_po_0p69 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_1p41_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_xhigh_po_1p41 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_2p85_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_xhigh_po_2p85 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_xhigh_po_5p73_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_xhigh_po_5p73 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_nd_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_nd $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_pd_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_pd $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_nd__hv_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_nd__hv $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_pd__hv_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_pd__hv $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_l1_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_l1 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m1_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_m1 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m2_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_m2 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m3_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_m3 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__res_generic_m4_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_m4 $parameters] |
| } |
| proc sky130::sky130_fd_pr__res_generic_m5_check {parameters} { |
| return [sky130::res_check sky130_fd_pr__res_generic_m5 $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # MOS defaults: |
| #---------------------------------------------------------------- |
| # w = Gate width |
| # l = Gate length |
| # m = Multiplier |
| # nf = Number of fingers |
| # diffcov = Diffusion contact coverage |
| # polycov = Poly contact coverage |
| # topc = Top gate contact |
| # botc = Bottom gate contact |
| # guard = Guard ring |
| # |
| # (not user-editable) |
| # |
| # lmin = Gate minimum length |
| # wmin = Gate minimum width |
| #---------------------------------------------------------------- |
| |
| #---------------------------------------------------------------- |
| # pmos: Specify all user-editable default values and those |
| # needed by mos_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_defaults {} { |
| return {w 0.42 l 0.15 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.15 wmin 0.42 \ |
| compatible {sky130_fd_pr__pfet_01v8 \ |
| sky130_fd_pr__pfet_01v8_lvt sky130_fd_pr__pfet_01v8_hvt \ |
| sky130_fd_pr__pfet_g5v0d10v5} full_metal 1 \ |
| viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_lvt_defaults {} { |
| return {w 0.42 l 0.35 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.35 wmin 0.42 \ |
| compatible {sky130_fd_pr__pfet_01v8 \ |
| sky130_fd_pr__pfet_01v8_lvt sky130_fd_pr__pfet_01v8_hvt \ |
| sky130_fd_pr__pfet_g5v0d10v5} full_metal 1 \ |
| viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_hvt_defaults {} { |
| return {w 0.42 l 0.15 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.15 wmin 0.42 \ |
| compatible {sky130_fd_pr__pfet_01v8 \ |
| sky130_fd_pr__pfet_01v8_lvt sky130_fd_pr__pfet_01v8_hvt \ |
| sky130_fd_pr__pfet_g5v0d10v5} full_metal 1 \ |
| viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_g5v0d10v5_defaults {} { |
| return {w 0.42 l 0.50 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.50 wmin 0.42 \ |
| compatible {sky130_fd_pr__pfet_01v8 \ |
| sky130_fd_pr__pfet_01v8_lvt sky130_fd_pr__pfet_01v8_hvt \ |
| sky130_fd_pr__pfet_g5v0d10v5} full_metal 1 \ |
| viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # nmos: Specify all user-editable default values and those |
| # needed by mos_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_defaults {} { |
| return {w 0.420 l 0.150 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.15 wmin 0.42 \ |
| compatible {sky130_fd_pr__nfet_01v8 sky130_fd_pr__nfet_01v8_lvt \ |
| sky130_fd_bs_flash__special_sonosfet_star \ |
| sky130_fd_pr__nfet_g5v0d10v5 sky130_fd_pr__nfet_05v0_nvt \ |
| sky130_fd_pr__nfet_03v3_nvt} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_lvt_defaults {} { |
| return {w 0.420 l 0.150 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.15 wmin 0.42 \ |
| compatible {sky130_fd_pr__nfet_01v8 sky130_fd_pr__nfet_01v8_lvt \ |
| sky130_fd_bs_flash__special_sonosfet_star \ |
| sky130_fd_pr__nfet_g5v0d10v5 sky130_fd_pr__nfet_05v0_nvt \ |
| sky130_fd_pr__nfet_03v3_nvt} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_bs_flash__special_sonosfet_star_defaults {} { |
| return {w 0.420 l 0.150 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.15 wmin 0.42 \ |
| compatible {sky130_fd_pr__nfet_01v8 sky130_fd_pr__nfet_01v8_lvt \ |
| sky130_fd_bs_flash__special_sonosfet_star \ |
| sky130_fd_pr__nfet_g5v0d10v5 sky130_fd_pr__nfet_05v0_nvt \ |
| sky130_fd_pr__nfet_03v3_nvt} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_g5v0d10v5_defaults {} { |
| return {w 0.42 l 0.50 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.50 wmin 0.42 \ |
| compatible {sky130_fd_pr__nfet_01v8 sky130_fd_pr__nfet_01v8_lvt \ |
| sky130_fd_bs_flash__special_sonosfet_star \ |
| sky130_fd_pr__nfet_g5v0d10v5 sky130_fd_pr__nfet_05v0_nvt \ |
| sky130_fd_pr__nfet_03v3_nvt} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_05v0_nvt_defaults {} { |
| return {w 0.42 l 0.90 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.90 wmin 0.42 \ |
| compatible {sky130_fd_pr__nfet_01v8 sky130_fd_pr__nfet_01v8_lvt \ |
| sky130_fd_bs_flash__special_sonosfet_star \ |
| sky130_fd_pr__nfet_g5v0d10v5 sky130_fd_pr__nfet_05v0_nvt \ |
| sky130_fd_pr__nfet_03v3_nvt} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_03v3_nvt_defaults {} { |
| return {w 0.42 l 0.50 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.50 wmin 0.42 \ |
| compatible {sky130_fd_pr__nfet_01v8 sky130_fd_pr__nfet_01v8_lvt \ |
| sky130_fd_bs_flash__special_sonosfet_star \ |
| sky130_fd_pr__nfet_g5v0d10v5 sky130_fd_pr__nfet_05v0_nvt \ |
| sky130_fd_pr__nfet_03v3_nvt} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # mos varactor: Specify all user-editable default values and those |
| # needed by mosvc_check |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__cap_var_lvt_defaults {} { |
| return {w 1.0 l 0.18 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.18 wmin 1.0 \ |
| compatible {sky130_fd_pr__cap_var_lvt \ |
| sky130_fd_pr__cap_var_hvt sky130_fd_pr__cap_var} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_hvt_defaults {} { |
| return {w 1.0 l 0.18 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.18 wmin 1.0 \ |
| compatible {sky130_fd_pr__cap_var_lvt \ |
| sky130_fd_pr__cap_var_hvt sky130_fd_pr__cap_var} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_defaults {} { |
| return {w 1.0 l 0.50 m 1 nf 1 diffcov 100 polycov 100 \ |
| guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 \ |
| topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.50 wmin 1.0 \ |
| compatible {sky130_fd_pr__cap_var_lvt \ |
| sky130_fd_pr__cap_var_hvt sky130_fd_pr__cap_var} \ |
| full_metal 1 viasrc 100 viadrn 100 viagate 100 \ |
| viagb 0 viagr 0 viagl 0 viagt 0} |
| } |
| |
| #---------------------------------------------------------------- |
| # mos: Conversion from SPICE netlist parameters to toolkit |
| #---------------------------------------------------------------- |
| |
| proc sky130::mos_convert {parameters} { |
| set pdkparams [dict create] |
| dict for {key value} $parameters { |
| switch -nocase $key { |
| l - |
| w { |
| # Length and width are converted to units of microns |
| set value [magic::spice2float $value] |
| # set value [expr $value * 1e6] |
| set value [magic::3digitpastdecimal $value] |
| dict set pdkparams [string tolower $key] $value |
| } |
| m { |
| dict set pdkparams [string tolower $key] $value |
| } |
| nf { |
| # Adjustment ot W will be handled below |
| dict set pdkparams [string tolower $key] $value |
| } |
| } |
| } |
| |
| # Magic does not understand "nf" as a parameter, but expands to |
| # "nf" number of devices connected horizontally. The "w" value |
| # must be divided down accordingly, as the "nf" parameter implies |
| # that the total width "w" is divided into "nf" fingers. |
| |
| catch { |
| set w [dict get $pdkparams w] |
| set nf [dict get $pdkparams nf] |
| if {$nf > 1} { |
| dict set pdkparams w [expr $w / $nf] |
| } |
| } |
| |
| return $pdkparams |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_lvt_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_bs_flash__special_sonosfet_star_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_g5v0d10v5_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_05v0_nvt_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_03v3_nvt_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_lvt_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_hvt_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_g5v0d10v5_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_lvt_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_hvt_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_convert {parameters} { |
| return [sky130::mos_convert $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # mos: Interactively specifies the fixed layout parameters |
| #---------------------------------------------------------------- |
| |
| proc sky130::mos_dialog {device parameters} { |
| # Editable fields: w, l, nf, m, diffcov, polycov |
| # Checked fields: topc, botc |
| # For specific devices, gate type is a selection list |
| |
| magic::add_entry w "Width (um)" $parameters |
| magic::add_entry l "Length (um)" $parameters |
| magic::add_entry nf "Fingers" $parameters |
| magic::add_entry m "M" $parameters |
| |
| if {[dict exists $parameters compatible]} { |
| set sellist [dict get $parameters compatible] |
| magic::add_selectlist gencell "Device type" $sellist $parameters $device |
| } |
| |
| magic::add_entry diffcov "Diffusion contact coverage (%)" $parameters |
| magic::add_entry polycov "Poly contact coverage (%)" $parameters |
| magic::add_entry rlcov "Guard ring contact coverage (%)" $parameters |
| if {[dict exists $parameters gbc]} { |
| magic::add_entry tbcov "Guard ring top/bottom contact coverage (%)" $parameters |
| } |
| |
| magic::add_checkbox poverlap "Overlap at poly contact" $parameters |
| magic::add_checkbox doverlap "Overlap at diffusion contact" $parameters |
| magic::add_checkbox topc "Add top gate contact" $parameters |
| magic::add_checkbox botc "Add bottom gate contact" $parameters |
| |
| magic::add_checkbox guard "Add guard ring" $parameters |
| magic::add_checkbox full_metal "Full metal guard ring" $parameters |
| magic::add_checkbox glc "Add left guard ring contact" $parameters |
| magic::add_checkbox grc "Add right guard ring contact" $parameters |
| if {[dict exists $parameters gbc]} { |
| magic::add_checkbox gbc "Add bottom guard ring contact" $parameters |
| } |
| if {[dict exists $parameters gtc]} { |
| magic::add_checkbox gtc "Add top guard ring contact" $parameters |
| } |
| |
| magic::add_entry viasrc "Source via coverage \[+/-\](%)" $parameters |
| magic::add_entry viadrn "Drain via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagate "Gate via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagb "Bottom guard ring via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagt "Top guard ring via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagr "Right guard ring via coverage \[+/-\](%)" $parameters |
| magic::add_entry viagl "Left guard ring via coverage \[+/-\](%)" $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__nfet_01v8 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_lvt_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__nfet_01v8_lvt $parameters |
| } |
| |
| proc sky130::sky130_fd_bs_flash__special_sonosfet_star_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_bs_flash__special_sonosfet_star $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_g5v0d10v5_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__nfet_g5v0d10v5 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_05v0_nvt_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__nfet_05v0_nvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_03v3_nvt_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__nfet_03v3_nvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__pfet_01v8 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_lvt_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__pfet_01v8_lvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_hvt_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__pfet_01v8_hvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_g5v0d10v5_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__pfet_g5v0d10v5 $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_lvt_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__cap_var_lvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_hvt_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__cap_var_hvt $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_dialog {parameters} { |
| sky130::mos_dialog sky130_fd_pr__cap_var $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| # getbox: Get the current cursor box, in microns |
| #---------------------------------------------------------------- |
| |
| proc sky130::getbox {} { |
| set curbox [box values] |
| set newbox [] |
| set oscale [cif scale out] |
| for {set i 0} {$i < 4} {incr i} { |
| set v [* [lindex $curbox $i] $oscale] |
| lappend newbox $v |
| } |
| return $newbox |
| } |
| |
| #---------------------------------------------------------------- |
| # unionbox: Get the union bounding box of box1 and box2 |
| #---------------------------------------------------------------- |
| |
| proc sky130::unionbox {box1 box2} { |
| set newbox [] |
| for {set i 0} {$i < 2} {incr i} { |
| set v [lindex $box1 $i] |
| set o [lindex $box2 $i] |
| if {$v < $o} { |
| lappend newbox $v |
| } else { |
| lappend newbox $o |
| } |
| } |
| for {set i 2} {$i < 4} {incr i} { |
| set v [lindex $box1 $i] |
| set o [lindex $box2 $i] |
| if {$v > $o} { |
| lappend newbox $v |
| } else { |
| lappend newbox $o |
| } |
| } |
| return $newbox |
| } |
| |
| #---------------------------------------------------------------- |
| # Draw a contact |
| #---------------------------------------------------------------- |
| |
| proc sky130::draw_contact {w h s o x atype ctype mtype {orient vert}} { |
| |
| # Draw a minimum-size diff contact centered at current position |
| # w is width, h is height. Minimum size ensured. |
| # x is contact size |
| # s is contact diffusion (or poly) surround |
| # o is contact metal surround |
| # atype is active (e.g., ndiff) or bottom metal if a via |
| # ctype is contact (e.g., ndc) |
| # mtype is metal (e.g., m1) or top metal if a via |
| # orient is the orientation of the contact |
| |
| # Set orientations for the bottom material based on material type. |
| # Substrate diffusions (tap) need not overlap the contact in all |
| # directions, but other (diff) types do. The metal (local |
| # interconnect) layer always overlaps in two directions only. |
| |
| set lv_sub_types {"psd" "nsd"} |
| if {[lsearch $lv_sub_types $atype] >= 0} { |
| set aorient $orient |
| } else { |
| set aorient "full" |
| } |
| |
| pushbox |
| box size 0 0 |
| if {$w < $x} {set w $x} |
| if {$h < $x} {set h $x} |
| set hw [/ $w 2.0] |
| set hh [/ $h 2.0] |
| box grow n ${hh}um |
| box grow s ${hh}um |
| box grow e ${hw}um |
| box grow w ${hw}um |
| paint ${ctype} |
| pushbox |
| # Bottom layer surrounded on sides as declared by aorient |
| if {($aorient == "vert") || ($aorient == "full")} { |
| box grow n ${s}um |
| box grow s ${s}um |
| } |
| if {($aorient == "horz") || ($aorient == "full")} { |
| box grow e ${s}um |
| box grow w ${s}um |
| } |
| paint ${atype} |
| set extents [sky130::getbox] |
| popbox |
| # Top layer surrounded on sides as declared by orient |
| if {($orient == "vert") || ($orient == "full")} { |
| box grow n ${o}um |
| box grow s ${o}um |
| } |
| if {($orient == "horz") || ($orient == "full")} { |
| box grow e ${o}um |
| box grow w ${o}um |
| } |
| paint ${mtype} |
| popbox |
| return $extents |
| } |
| |
| #---------------------------------------------------------------- |
| # Draw a guard ring |
| #---------------------------------------------------------------- |
| |
| proc sky130::guard_ring {gw gh parameters} { |
| |
| # Set local default values if they are not in parameters |
| set rlcov 100 ;# Right-left contact coverage percentage |
| set tbcov 100 ;# Top-bottom contact coverage percentage |
| set grc 1 ;# Draw right side contact |
| set glc 1 ;# Draw left side contact |
| set gtc 1 ;# Draw right side contact |
| set gbc 1 ;# Draw left side contact |
| set viagb 0 ;# Draw bottom side via |
| set viagt 0 ;# Draw top side via |
| set viagr 0 ;# Draw right side via |
| set viagl 0 ;# Draw left side via |
| set full_metal 1 ;# Draw full (continuous) metal ring |
| set guard_sub_type pwell ;# substrate type under guard ring |
| set guard_sub_surround 0 ;# substrate type surrounds guard ring |
| set plus_diff_type nsd ;# guard ring diffusion type |
| set plus_contact_type nsc ;# guard ring diffusion contact type |
| set sub_type pwell ;# substrate type |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Set guard_sub_type to sub_type if it is not defined |
| if {![dict exists $parameters guard_sub_type]} { |
| set guard_sub_type $sub_type |
| } |
| |
| set hx [/ $contact_size 2.0] |
| set hw [/ $gw 2.0] |
| set hh [/ $gh 2.0] |
| |
| # Watch for (LV) substrate diffusion types, which have a different |
| # contact surround amount depending on the direction |
| |
| set lv_sub_types {"psd" "nsd"} |
| if {[lsearch $lv_sub_types $plus_diff_type] >= 0} { |
| set diff_surround 0 |
| } |
| |
| # Compute diffusion width |
| set difft [+ $contact_size $diff_surround $diff_surround] |
| set hdifft [/ $difft 2.0] |
| # Compute guard ring diffusion width and height |
| set hdiffw [/ [+ $gw $difft] 2.0] |
| set hdiffh [/ [+ $gh $difft] 2.0] |
| |
| pushbox |
| box size 0 0 |
| |
| pushbox |
| box move n ${hh}um |
| box grow n ${hdifft}um |
| box grow s ${hdifft}um |
| box grow e ${hdiffw}um |
| box grow w ${hdiffw}um |
| paint $plus_diff_type |
| if {$guard_sub_surround > 0} { |
| box grow c ${guard_sub_surround}um |
| paint $guard_sub_type |
| } |
| popbox |
| pushbox |
| box move s ${hh}um |
| box grow n ${hdifft}um |
| box grow s ${hdifft}um |
| box grow e ${hdiffw}um |
| box grow w ${hdiffw}um |
| paint $plus_diff_type |
| if {$guard_sub_surround > 0} { |
| box grow c ${guard_sub_surround}um |
| paint $guard_sub_type |
| } |
| popbox |
| pushbox |
| box move e ${hw}um |
| box grow e ${hdifft}um |
| box grow w ${hdifft}um |
| box grow n ${hdiffh}um |
| box grow s ${hdiffh}um |
| paint $plus_diff_type |
| if {$guard_sub_surround > 0} { |
| box grow c ${guard_sub_surround}um |
| paint $guard_sub_type |
| } |
| popbox |
| pushbox |
| box move w ${hw}um |
| box grow e ${hdifft}um |
| box grow w ${hdifft}um |
| box grow n ${hdiffh}um |
| box grow s ${hdiffh}um |
| paint $plus_diff_type |
| if {$guard_sub_surround > 0} { |
| box grow c ${guard_sub_surround}um |
| paint $guard_sub_type |
| } |
| popbox |
| |
| if {$full_metal} { |
| set hmetw [/ [+ $gw $contact_size] 2.0] |
| set hmeth [/ [+ $gh $contact_size] 2.0] |
| pushbox |
| box move n ${hh}um |
| box grow n ${hx}um |
| box grow s ${hx}um |
| box grow e ${hmetw}um |
| box grow w ${hmetw}um |
| paint li |
| popbox |
| pushbox |
| box move s ${hh}um |
| box grow n ${hx}um |
| box grow s ${hx}um |
| box grow e ${hmetw}um |
| box grow w ${hmetw}um |
| paint li |
| popbox |
| pushbox |
| box move e ${hw}um |
| box grow e ${hx}um |
| box grow w ${hx}um |
| box grow n ${hmeth}um |
| box grow s ${hmeth}um |
| paint li |
| popbox |
| pushbox |
| box move w ${hw}um |
| box grow e ${hx}um |
| box grow w ${hx}um |
| box grow n ${hmeth}um |
| box grow s ${hmeth}um |
| paint li |
| popbox |
| } |
| |
| # Set guard ring height so that contact metal reaches to end, scale by $per |
| # set ch [* [+ $gh $contact_size [* $metal_surround -2.0]] [/ $rlcov 100.0]] |
| set ch [* [- $gh $contact_size [* [+ $metal_surround $metal_spacing] \ |
| 2.0]] [/ $rlcov 100.0]] |
| if {$ch < $contact_size} {set ch $contact_size} |
| |
| # Set guard ring width so that contact metal reaches to side contacts |
| set cw [* [- $gw $contact_size [* [+ $metal_surround $metal_spacing] \ |
| 2.0]] [/ $tbcov 100.0]] |
| if {$cw < $contact_size} {set cw $contact_size} |
| |
| if {$tbcov > 0.0} { |
| if {$gtc == 1} { |
| pushbox |
| box move n ${hh}um |
| sky130::draw_contact $cw 0 $diff_surround $metal_surround \ |
| $contact_size $plus_diff_type $plus_contact_type li horz |
| popbox |
| } |
| if {$gbc == 1} { |
| pushbox |
| box move s ${hh}um |
| sky130::draw_contact $cw 0 $diff_surround $metal_surround \ |
| $contact_size $plus_diff_type $plus_contact_type li horz |
| popbox |
| } |
| } |
| if {$rlcov > 0.0} { |
| if {$grc == 1} { |
| pushbox |
| box move e ${hw}um |
| sky130::draw_contact 0 $ch $diff_surround $metal_surround \ |
| $contact_size $plus_diff_type $plus_contact_type li vert |
| popbox |
| } |
| if {$glc == 1} { |
| pushbox |
| box move w ${hw}um |
| sky130::draw_contact 0 $ch $diff_surround $metal_surround \ |
| $contact_size $plus_diff_type $plus_contact_type li vert |
| popbox |
| } |
| } |
| |
| # Vias |
| if {$viagb != 0} { |
| pushbox |
| set ch $via_size |
| set cw [* [- $gw $via_size] [/ [expr abs($viagb)] 100.0]] |
| if {$cw < $via_size} {set cw $via_size} |
| box move s ${hh}um |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| set anchor [string index $viagb 0] |
| if {$anchor == "+"} { |
| box move w [/ [- $gw $via_size] 2]um |
| box grow e ${cw}um |
| } elseif {$anchor == "-"} { |
| box move e [/ [- $gw $via_size] 2]um |
| box grow w ${cw}um |
| } else { |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| } |
| sky130::mcon_draw horz |
| popbox |
| } |
| if {$viagt != 0} { |
| pushbox |
| set ch $via_size |
| set cw [* [- $gw $via_size] [/ [expr abs($viagt)] 100.0]] |
| if {$cw < $via_size} {set cw $via_size} |
| box move n ${hh}um |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| set anchor [string index $viagt 0] |
| if {$anchor == "+"} { |
| box move w [/ [- $gw $via_size] 2]um |
| box grow e ${cw}um |
| } elseif {$anchor == "-"} { |
| box move e [/ [- $gw $via_size] 2]um |
| box grow w ${cw}um |
| } else { |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| } |
| sky130::mcon_draw horz |
| popbox |
| } |
| if {$viagr != 0} { |
| pushbox |
| set ch [* [- $gh $via_size] [/ [expr abs($viagr)] 100.0]] |
| if {$ch < $via_size} {set ch $via_size} |
| set cw $via_size |
| box move e ${hw}um |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| set anchor [string index $viagr 0] |
| if {$anchor == "+"} { |
| box move s [/ [- $gh $via_size] 2]um |
| box grow n ${ch}um |
| } elseif {$anchor == "-"} { |
| box move n [/ [- $gh $via_size] 2]um |
| box grow s ${ch}um |
| } else { |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| } |
| sky130::mcon_draw vert |
| popbox |
| } |
| if {$viagl != 0} { |
| pushbox |
| set ch [* [- $gh $via_size] [/ [expr abs($viagl)] 100.0]] |
| if {$ch < $via_size} {set ch $via_size} |
| set cw $via_size |
| box move w ${hw}um |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| set anchor [string index $viagl 0] |
| if {$anchor == "+"} { |
| box move s [/ [- $gh $via_size] 2]um |
| box grow n ${ch}um |
| } elseif {$anchor == "-"} { |
| box move n [/ [- $gh $via_size] 2]um |
| box grow s ${ch}um |
| } else { |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| } |
| sky130::mcon_draw vert |
| popbox |
| } |
| |
| pushbox |
| box grow e ${hw}um |
| box grow w ${hw}um |
| box grow n ${hh}um |
| box grow s ${hh}um |
| # Create boundary using properties |
| property FIXED_BBOX [box values] |
| box grow c ${hx}um ;# to edge of contact |
| box grow c ${diff_surround}um ;# to edge of diffusion |
| box grow c ${sub_surround}um ;# sub/well overlap of diff (NOT guard_sub) |
| paint $sub_type |
| set cext [sky130::getbox] |
| popbox |
| popbox |
| |
| return $cext |
| } |
| |
| #---------------------------------------------------------------- |
| # MOSFET: Draw a single device |
| #---------------------------------------------------------------- |
| |
| proc sky130::mos_device {parameters} { |
| |
| # Epsilon for avoiding round-off errors |
| set eps 0.0005 |
| |
| # Set local default values if they are not in parameters |
| set diffcov 100 ;# percent coverage of diffusion contact |
| set polycov 100 ;# percent coverage of poly contact |
| set topc 1 ;# draw top poly contact |
| set botc 1 ;# draw bottom poly contact |
| set viasrc 100 ;# draw source vias |
| set viadrn 100 ;# draw drain vias |
| set viagate 100 ;# draw gate vias |
| set evens 1 ;# even or odd numbered device finger, in X |
| set dev_sub_type "" ;# device substrate type (if different from guard ring) |
| set dev_sub_dist 0 ;# device substrate distance (if nondefault dev_sub_type) |
| set min_effl 0 ;# gate length below which finger pitch must be stretched |
| set diff_overlap_cont 0 ;# extra overlap of end contact by diffusion |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Draw the diffusion and poly |
| pushbox |
| box size 0 0 |
| pushbox |
| set hw [/ $w 2.0] |
| set hl [/ $l 2.0] |
| set he [/ $min_effl 2.0] |
| if {$nf == 1 || $he < $hl} {set he $hl} |
| box grow n ${hw}um |
| box grow s ${hw}um |
| box grow e ${hl}um |
| box grow w ${hl}um |
| pushbox |
| if {${diff_extension} > ${gate_to_diffcont}} { |
| box grow e ${diff_extension}um |
| box grow w ${diff_extension}um |
| } else { |
| box grow e ${gate_to_diffcont}um |
| box grow w ${gate_to_diffcont}um |
| } |
| paint ${diff_type} |
| popbox |
| pushbox |
| if {${gate_extension} > ${gate_to_polycont}} { |
| box grow n ${gate_extension}um |
| box grow s ${gate_extension}um |
| } else { |
| if {$topc} { |
| box grow n ${gate_to_polycont}um |
| } else { |
| box grow n ${gate_extension}um |
| } |
| if {$botc} { |
| box grow s ${gate_to_polycont}um |
| } else { |
| box grow s ${gate_extension}um |
| } |
| } |
| paint ${poly_type} |
| set cext [sky130::getbox] |
| popbox |
| # save gate area now and paint later, so that diffusion surrounding the |
| # contact does not paint over the gate area, in case the gate type is |
| # not part of a "compose" entry in the techfile. |
| set gaterect [box values] |
| popbox |
| |
| # Adjust position of contacts for dogbone geometry |
| # Rule 1: Minimize diffusion length. Contacts only move out |
| # if width < contact diffusion height. They move out enough |
| # that the diffusion-to-poly spacing is satisfied. |
| |
| set ddover 0 |
| set cdwmin [+ ${contact_size} [* ${diff_surround} 2]] |
| set cstem [- ${gate_to_diffcont} [/ ${cdwmin} 2.0]] |
| set cgrow [- ${diff_poly_space} ${cstem}] |
| if {[+ ${w} ${eps}] < ${cdwmin}} { |
| if {${cgrow} > 0} { |
| set gate_to_diffcont [+ ${gate_to_diffcont} ${cgrow}] |
| } |
| set ddover [/ [- ${cdwmin} ${w}] 2.0] |
| } |
| |
| # Rule 2: Minimum poly width. Poly contacts only move out |
| # if length < contact poly width. They move out enough |
| # that the diffusion-to-poly spacing is satisfied. |
| |
| set gporig ${gate_to_polycont} |
| set cplmin [+ ${contact_size} [* ${poly_surround} 2]] |
| set cstem [- ${gate_to_polycont} [/ ${cplmin} 2.0]] |
| set cgrow [- ${diff_poly_space} ${cstem}] |
| if {[+ ${l} ${eps}] < ${cplmin}} { |
| if {${cgrow} > 0} { |
| set gate_to_polycont [+ ${gate_to_polycont} ${cgrow}] |
| } |
| } |
| |
| # Rule 3: If both poly and diffusion are dogboned, then move |
| # poly out further to clear spacing to the diffusion contact |
| |
| if {[+ ${w} ${eps}] < ${cdwmin}} { |
| if {[+ ${l} ${eps}] < ${cplmin}} { |
| set cgrow [/ [- ${cplmin} ${w}] 2.0] |
| set gate_to_polycont [+ ${gate_to_polycont} ${cgrow}] |
| } |
| } |
| |
| # Rule 4: If M > 1 and poly contacts overlap, then increase the |
| # transistor-to-poly-contact distance by the amount of any |
| # diffusion dogbone overhang. |
| |
| if {($poverlap == 1) && ($m > 1)} { |
| if {${gate_to_polycont} - $gporig < $ddover} { |
| set gate_to_polycont [+ ${gporig} ${ddover}] |
| } |
| } |
| |
| # Reduce contact sizes by poly or diffusion surround so that |
| # the contact area edges match the device diffusion or poly. |
| # (Minimum dimensions will be enforced by the contact drawing routine) |
| set tsurround [+ ${diff_surround} ${diff_overlap_cont}] |
| set cdw [- ${w} [* ${tsurround} 2]] ;# diff contact height |
| set cpl [- ${l} [* ${poly_surround} 2]] ;# poly contact width |
| |
| # Save the full diffusion (source/drain) and poly (gate) lengths |
| set cdwfull $cdw |
| set cplfull $cpl |
| |
| # Reduce by coverage percentage. NOTE: If overlapping multiple devices, |
| # keep maximum poly contact coverage. |
| |
| set cdw [* ${cdw} [/ ${diffcov} 100.0]] |
| if {($poverlap == 0) || ($m == 1)} { |
| set cpl [* ${cpl} [/ ${polycov} 100.0]] |
| } |
| |
| # Right diffusion contact |
| pushbox |
| box move e ${he}um |
| box move e ${gate_to_diffcont}um |
| |
| # Source via on top of contact |
| if {$evens == 1} {set viatype $viasrc} else {set viatype $viadrn} |
| if {$viatype != 0} { |
| pushbox |
| set cw $via_size |
| set ch [* $cdwfull [/ [expr abs($viatype)] 100.0]] |
| if {$ch < $via_size} {set ch $via_size} |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| set anchor [string index $viatype 0] |
| if {$anchor == "+"} { |
| box move s [/ [- $cdwfull $via_size] 2]um |
| box grow n ${ch}um |
| } elseif {$anchor == "-"} { |
| box move n [/ [- $cdwfull $via_size] 2]um |
| box grow s ${ch}um |
| } else { |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| } |
| sky130::mcon_draw vert |
| popbox |
| } |
| set cext [sky130::unionbox $cext [sky130::draw_contact 0 ${cdw} \ |
| ${diff_surround} ${metal_surround} ${contact_size}\ |
| ${diff_type} ${diff_contact_type} li vert]] |
| popbox |
| # Left diffusion contact |
| pushbox |
| box move w ${he}um |
| box move w ${gate_to_diffcont}um |
| |
| # Drain via on top of contact |
| if {$evens == 1} {set viatype $viadrn} else {set viatype $viasrc} |
| if {$viatype != 0} { |
| pushbox |
| set cw $via_size |
| set ch [* $cdwfull [/ [expr abs($viatype)] 100.0]] |
| if {$ch < $via_size} {set ch $via_size} |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| set anchor [string index $viatype 0] |
| if {$anchor == "+"} { |
| box move s [/ [- $cdwfull $via_size] 2]um |
| box grow n ${ch}um |
| } elseif {$anchor == "-"} { |
| box move n [/ [- $cdwfull $via_size] 2]um |
| box grow s ${ch}um |
| } else { |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| } |
| sky130::mcon_draw vert |
| popbox |
| } |
| set cext [sky130::unionbox $cext [sky130::draw_contact 0 ${cdw} \ |
| ${diff_surround} ${metal_surround} ${contact_size} \ |
| ${diff_type} ${diff_contact_type} li vert]] |
| set diffarea $cext |
| popbox |
| # Top poly contact |
| if {$topc} { |
| pushbox |
| box move n ${hw}um |
| box move n ${gate_to_polycont}um |
| |
| # Gate via on top of contact |
| if {$viagate != 0} { |
| pushbox |
| set ch $via_size |
| set cw [* $cplfull [/ [expr abs($viagate)] 100.0]] |
| if {$cw < $via_size} {set cw $via_size} |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| set anchor [string index $viagate 0] |
| if {$anchor == "+"} { |
| box move w [/ [- $cplfull $via_size] 2]um |
| box grow e ${cw}um |
| } elseif {$anchor == "-"} { |
| box move e [/ [- $cplfull $via_size] 2]um |
| box grow w ${cw}um |
| } else { |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| } |
| sky130::mcon_draw horz |
| popbox |
| } |
| set cext [sky130::unionbox $cext [sky130::draw_contact ${cpl} 0 \ |
| ${poly_surround} ${metal_surround} ${contact_size} \ |
| ${poly_type} ${poly_contact_type} li horz]] |
| popbox |
| } |
| # Bottom poly contact |
| if {$botc} { |
| pushbox |
| box move s ${hw}um |
| box move s ${gate_to_polycont}um |
| |
| # Gate via on top of contact |
| if {$viagate != 0} { |
| pushbox |
| set ch $via_size |
| set cw [* $cplfull [/ [expr abs($viagate)] 100.0]] |
| if {$cw < $via_size} {set cw $via_size} |
| box grow n [/ $ch 2]um |
| box grow s [/ $ch 2]um |
| set anchor [string index $viagate 0] |
| if {$anchor == "+"} { |
| box move w [/ [- $cplfull $via_size] 2]um |
| box grow e ${cw}um |
| } elseif {$anchor == "-"} { |
| box move e [/ [- $cplfull $via_size] 2]um |
| box grow w ${cw}um |
| } else { |
| box grow e [/ $cw 2]um |
| box grow w [/ $cw 2]um |
| } |
| sky130::mcon_draw horz |
| popbox |
| } |
| set cext [sky130::unionbox $cext [sky130::draw_contact ${cpl} 0 \ |
| ${poly_surround} ${metal_surround} ${contact_size} \ |
| ${poly_type} ${poly_contact_type} li horz]] |
| popbox |
| } |
| |
| # Now draw the gate, after contacts have been drawn |
| pushbox |
| box values {*}${gaterect} |
| # gate_type need not be defined if poly over diff paints the right type. |
| catch {paint ${gate_type}} |
| # sub_surround_dev, if defined, may create a larger area around the gate |
| # than sub_surround creates around the diffusion/poly area. |
| if [dict exists $parameters sub_surround_dev] { |
| box grow n ${sub_surround_dev}um |
| box grow s ${sub_surround_dev}um |
| box grow e ${sub_surround_dev}um |
| box grow w ${sub_surround_dev}um |
| paint ${dev_sub_type} |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| } |
| popbox |
| |
| if {$dev_sub_type != ""} { |
| box values [lindex $diffarea 0]um [lindex $diffarea 1]um \ |
| [lindex $diffarea 2]um [lindex $diffarea 3]um |
| box grow n ${sub_surround}um |
| box grow s ${sub_surround}um |
| box grow e ${sub_surround}um |
| box grow w ${sub_surround}um |
| paint ${dev_sub_type} |
| if {$dev_sub_dist > 0} { |
| set cext [sky130::unionbox $cext [sky130::getbox]] |
| } |
| # puts stdout "Diagnostic: bounding box is $cext" |
| } |
| |
| popbox |
| return $cext |
| } |
| |
| #---------------------------------------------------------------- |
| # MOSFET: Draw the tiled device |
| #---------------------------------------------------------------- |
| |
| proc sky130::mos_draw {parameters} { |
| tech unlock * |
| set savesnap [snap] |
| snap internal |
| |
| # Set defaults if they are not in parameters |
| set poverlap 0 ;# overlap poly contacts when tiling |
| set doverlap 1 ;# overlap diffusion contacts when tiling |
| set dev_sub_dist 0 ;# substrate to guard ring, if dev_sub_type defined |
| set dev_sub_space 0 ;# distance between substrate areas for arrayed devices |
| set min_allc 0 ;# gate length below which poly contacts must be interleaved |
| set id_type "" ;# additional type covering everything |
| set id_surround 0 ;# amount of surround on above type |
| set id2_type "" ;# additional type covering everything |
| set id2_surround 0 ;# amount of surround on above type |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Diff-to-tap spacing is by default the same as diff spacing |
| if {![dict exist $parameters diff_tap_space]} { |
| set diff_tap_space $diff_spacing |
| } |
| |
| # If poverlap is 1 then both poly contacts must be present |
| if {$poverlap == 1} { |
| set topc 1 |
| set botc 1 |
| dict set parameters topc 1 |
| dict set parameters botc 1 |
| } |
| |
| # Normalize distance units to microns |
| set w [magic::spice2float $w] |
| set l [magic::spice2float $l] |
| |
| pushbox |
| box values 0 0 0 0 |
| |
| # If dx < (poly contact space + poly contact width), then there is not |
| # enough room for a row of contacts, so force alternating contacts |
| |
| set evens 1 |
| if {$nf > 1 && $l < $min_allc} { |
| set intc 1 |
| set evenodd 1 |
| set topc 1 |
| set botc 1 |
| dict set parameters topc 1 |
| dict set parameters botc 1 |
| set poverlap 0 |
| } else { |
| set intc 0 |
| } |
| |
| # Determine the base device dimensions by drawing one device |
| # while all layers are locked (nothing drawn). This allows the |
| # base drawing routine to do complicated geometry without having |
| # to duplicate it here with calculations. |
| |
| tech lock * |
| set bbox [sky130::mos_device $parameters] |
| # puts stdout "Diagnostic: Device bounding box e $bbox (um)" |
| tech unlock * |
| |
| set fw [- [lindex $bbox 2] [lindex $bbox 0]] |
| set fh [- [lindex $bbox 3] [lindex $bbox 1]] |
| set lw [+ [lindex $bbox 2] [lindex $bbox 0]] |
| set lh [+ [lindex $bbox 3] [lindex $bbox 1]] |
| |
| # If dev_sub_dist > 0 then each device must be in its own substrate |
| # (well) area, and overlaps are disallowed. dev_sub_space determines |
| # the distance between individual devices in an array. |
| |
| if {$dev_sub_dist > 0} { |
| set poverlap 0 |
| set doverlap 0 |
| |
| if {$dev_sub_space > $poly_spacing} { |
| set dx [+ $fw $dev_sub_space] |
| set dy [+ $fh $dev_sub_space] |
| } else { |
| set dx [+ $fw $poly_spacing] |
| set dy [+ $fh $poly_spacing] |
| } |
| |
| } else { |
| |
| # Determine tile width and height (depends on overlap) |
| if {$poverlap == 0} { |
| set dy [+ $fh $poly_spacing] |
| } else { |
| # overlap poly |
| set dy [- $fh [+ $poly_surround $poly_surround $contact_size]] |
| } |
| |
| if {$doverlap == 0} { |
| set dx [+ $fw $diff_spacing] |
| } else { |
| # overlap diffusions |
| set dx [- $fw [+ $diff_surround $diff_surround $contact_size]] |
| } |
| } |
| |
| # Determine core width and height |
| set corex [+ [* [- $nf 1] $dx] $fw] |
| set corey [+ [* [- $m 1] $dy] $fh] |
| set corellx [/ [+ [- $corex $fw] $lw] 2.0] |
| set corelly [/ [+ [- $corey $fh] $lh] 2.0] |
| |
| # If there is a diffusion dogbone, and no top poly contact, then |
| # increase the core height by the amount of the dogbone overhang. |
| |
| if {$topc == 0} { |
| set cdwmin [+ ${contact_size} [* ${diff_surround} 2]] |
| if {${w} < ${cdwmin}} { |
| set corey [+ $corey [/ [- ${cdwmin} ${w}] 2.0]] |
| } |
| } |
| |
| # Calculate guard ring size (measured to contact center) |
| if {($guard != 0) || (${id_type} != "")} { |
| if {($dev_sub_dist > 0) && ([+ $dev_sub_dist $sub_surround] > $diff_tap_space)} { |
| set gx [+ $corex [* 2.0 [+ $dev_sub_dist $diff_surround]] $contact_size] |
| } else { |
| set gx [+ $corex [* 2.0 [+ $diff_tap_space $diff_surround]] $contact_size] |
| } |
| if {($dev_sub_dist > 0) && ([+ $dev_sub_dist $sub_surround] > $diff_gate_space)} { |
| set gy [+ $corey [* 2.0 [+ $dev_sub_dist $diff_surround]] $contact_size] |
| } else { |
| set gy [+ $corey [* 2.0 [+ $diff_gate_space $diff_surround]] $contact_size] |
| } |
| |
| # Somewhat tricky. . . if the width is small and the diffusion is |
| # a dogbone, and the top or bottom poly contact is missing, then |
| # the spacing to the guard ring may be limited by diffusion spacing, not |
| # poly to diffusion. |
| |
| set inset [/ [+ $contact_size [* 2.0 $diff_surround] -$w] 2.0] |
| set sdiff [- [+ $inset $diff_tap_space] [+ $gate_extension $diff_gate_space]] |
| |
| if {$sdiff > 0} { |
| if {$topc == 0} { |
| set gy [+ $gy $sdiff] |
| set corelly [+ $corelly [/ $sdiff 2.0]] |
| } |
| if {$botc == 0} { |
| set gy [+ $gy $sdiff] |
| set corelly [- $corelly [/ $sdiff 2.0]] |
| } |
| } |
| } |
| if {$guard != 0} { |
| # Draw the guard ring first, as MOS well may interact with guard ring substrate |
| sky130::guard_ring $gx $gy $parameters |
| } |
| |
| pushbox |
| # If any surrounding identifier type is defined, draw it |
| if {${id_type} != ""} { |
| set hw [/ $gx 2] |
| set hh [/ $gy 2] |
| box grow e ${hw}um |
| box grow w ${hw}um |
| box grow n ${hh}um |
| box grow s ${hh}um |
| box grow c ${id_surround}um |
| paint ${id_type} |
| } |
| popbox |
| pushbox |
| box move w ${corellx}um |
| box move s ${corelly}um |
| for {set xp 0} {$xp < $nf} {incr xp} { |
| dict set parameters evens $evens |
| set evens [- 1 $evens] |
| pushbox |
| if {$intc == 1} { |
| set evenodd [- 1 $evenodd] |
| if {$evenodd == 1} { |
| dict set parameters topc 1 |
| dict set parameters botc 0 |
| } else { |
| dict set parameters topc 0 |
| dict set parameters botc 1 |
| } |
| set saveeo $evenodd |
| } |
| for {set yp 0} {$yp < $m} {incr yp} { |
| sky130::mos_device $parameters |
| box move n ${dy}um |
| if {$intc == 1} { |
| set evenodd [- 1 $evenodd] |
| if {$evenodd == 1} { |
| dict set parameters topc 1 |
| dict set parameters botc 0 |
| } else { |
| dict set parameters topc 0 |
| dict set parameters botc 1 |
| } |
| } |
| } |
| if {$intc == 1} { |
| set evenodd $saveeo |
| } |
| popbox |
| box move e ${dx}um |
| } |
| popbox |
| popbox |
| |
| snap $savesnap |
| tech revert |
| } |
| |
| #------------------- |
| # nMOS 1.8V |
| #------------------- |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_draw {parameters} { |
| set newdict [dict create \ |
| gate_type nfet \ |
| diff_type ndiff \ |
| diff_contact_type ndc \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| min_effl 0.185 \ |
| min_allc 0.26 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_lvt_draw {parameters} { |
| set newdict [dict create \ |
| gate_type nfetlvt \ |
| diff_type ndiff \ |
| diff_contact_type ndc \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| min_effl 0.185 \ |
| min_allc 0.26 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_bs_flash__special_sonosfet_star_draw {parameters} { |
| set newdict [dict create \ |
| gate_type nsonos \ |
| diff_type ndiff \ |
| diff_contact_type ndc \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| id_type dnwell \ |
| id_surround 1.355 \ |
| min_effl 0.185 \ |
| min_allc 0.26 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| #------------------- |
| # pMOS 1.8V |
| #------------------- |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_draw {parameters} { |
| set newdict [dict create \ |
| gate_type pfet \ |
| diff_type pdiff \ |
| diff_contact_type pdc \ |
| plus_diff_type nsd \ |
| plus_contact_type nsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type nwell \ |
| dev_sub_type nwell \ |
| gate_to_polycont 0.32 \ |
| min_effl 0.185 \ |
| min_allc 0.26 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_lvt_draw {parameters} { |
| set newdict [dict create \ |
| gate_type pfetlvt \ |
| diff_type pdiff \ |
| diff_contact_type pdc \ |
| plus_diff_type nsd \ |
| plus_contact_type nsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type nwell \ |
| dev_sub_type nwell \ |
| gate_to_polycont 0.32 \ |
| min_effl 0.185 \ |
| min_allc 0.26 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_hvt_draw {parameters} { |
| set newdict [dict create \ |
| gate_type pfethvt \ |
| diff_type pdiff \ |
| diff_contact_type pdc \ |
| plus_diff_type nsd \ |
| plus_contact_type nsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type nwell \ |
| dev_sub_type nwell \ |
| gate_to_polycont 0.32 \ |
| min_effl 0.185 \ |
| min_allc 0.26 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| #------------------- |
| # pMOS 5.0V |
| #------------------- |
| |
| proc sky130::sky130_fd_pr__pfet_g5v0d10v5_draw {parameters} { |
| set newdict [dict create \ |
| gate_type mvpfet \ |
| diff_type mvpdiff \ |
| diff_contact_type mvpdc \ |
| plus_diff_type mvnsd \ |
| plus_contact_type mvnsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type nwell \ |
| dev_sub_type nwell \ |
| guard_sub_surround 0.33 \ |
| gate_to_polycont 0.32 \ |
| diff_spacing 0.31 \ |
| diff_tap_space 0.38 \ |
| diff_gate_space 0.38 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| #------------------- |
| # nMOS 5.0V |
| #------------------- |
| |
| proc sky130::sky130_fd_pr__nfet_g5v0d10v5_draw {parameters} { |
| set newdict [dict create \ |
| gate_type mvnfet \ |
| diff_type mvndiff \ |
| diff_contact_type mvndc \ |
| plus_diff_type mvpsd \ |
| plus_contact_type mvpsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| diff_spacing 0.31 \ |
| diff_tap_space 0.38 \ |
| diff_gate_space 0.38 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_05v0_nvt_draw {parameters} { |
| set newdict [dict create \ |
| gate_type mvnnfet \ |
| diff_type mvndiff \ |
| diff_contact_type mvndc \ |
| plus_diff_type mvpsd \ |
| plus_contact_type mvpsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| diff_spacing 0.30 \ |
| diff_tap_space 0.38 \ |
| diff_gate_space 0.38 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_03v3_nvt_draw {parameters} { |
| set newdict [dict create \ |
| gate_type nnfet \ |
| diff_type mvndiff \ |
| diff_contact_type mvndc \ |
| plus_diff_type mvpsd \ |
| plus_contact_type mvpsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| diff_spacing 0.30 \ |
| diff_tap_space 0.38 \ |
| diff_gate_space 0.38 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| #------------------------ |
| # MOS varactor (1.8V) |
| #------------------------ |
| |
| proc sky130::sky130_fd_pr__cap_var_lvt_draw {parameters} { |
| set newdict [dict create \ |
| gate_type var \ |
| diff_type nnd \ |
| diff_contact_type nsc \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| dev_sub_type nwell \ |
| diff_overlap_cont 0.06 \ |
| dev_sub_dist 0.14 \ |
| dev_sub_space 1.27 \ |
| gate_to_diffcont 0.34 \ |
| diff_extension 0.485 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_hvt_draw {parameters} { |
| set newdict [dict create \ |
| gate_type varhvt \ |
| diff_type nnd \ |
| diff_contact_type nsc \ |
| plus_diff_type psd \ |
| plus_contact_type psc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| dev_sub_type nwell \ |
| diff_overlap_cont 0.06 \ |
| dev_sub_dist 0.14 \ |
| dev_sub_space 1.27 \ |
| gate_to_diffcont 0.34 \ |
| diff_extension 0.485 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| #--------------------------------------------------------- |
| # MOS varactor (5.0V) |
| # NOTE: dev_sub_space set to 2.0 assuming different nets. |
| # Should have option for same-net with merged wells. |
| #--------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__cap_var_draw {parameters} { |
| set newdict [dict create \ |
| gate_type mvvar \ |
| diff_type mvnsd \ |
| diff_contact_type mvnsc \ |
| plus_diff_type mvpsd \ |
| plus_contact_type mvpsc \ |
| poly_type poly \ |
| poly_contact_type pc \ |
| sub_type psub \ |
| dev_sub_type nwell \ |
| sub_surround 0.38 \ |
| sub_surround_dev 0.56 \ |
| guard_sub_surround 0.18 \ |
| diff_overlap_cont 0.06 \ |
| dev_sub_dist 0.785 \ |
| dev_sub_space 2.0 \ |
| gate_to_diffcont 0.34 \ |
| diff_extension 0.485 \ |
| ] |
| set drawdict [dict merge $sky130::ruleset $newdict $parameters] |
| return [sky130::mos_draw $drawdict] |
| } |
| |
| #---------------------------------------------------------------- |
| # MOSFET: Check device parameters for out-of-bounds values |
| #---------------------------------------------------------------- |
| |
| proc sky130::mos_check {device parameters} { |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Normalize distance units to microns |
| set l [magic::spice2float $l] |
| set l [magic::3digitpastdecimal $l] |
| set w [magic::spice2float $w] |
| set w [magic::3digitpastdecimal $w] |
| |
| # nf, m must be integer |
| if {![string is int $nf]} { |
| puts stderr "NF must be an integer!" |
| dict set parameters nf 1 |
| } |
| if {![string is int $m]} { |
| puts stderr "M must be an integer!" |
| dict set parameters m 1 |
| } |
| # diffcov, polycov must be numeric |
| if {[catch {expr abs($diffcov)}]} { |
| puts stderr "diffcov must be numeric!" |
| set diffcov 100 |
| dict set parameters diffcov $diffcov |
| } |
| if {[catch {expr abs($polycov)}]} { |
| puts stderr "polycov must be numeric!" |
| set polycov 100 |
| dict set parameters polycov $polycov |
| } |
| |
| if {$l < $lmin} { |
| puts stderr "Mos length must be >= $lmin um" |
| dict set parameters l $lmin |
| } |
| if {$w < $wmin} { |
| puts stderr "Mos width must be >= $wmin um" |
| dict set parameters w $wmin |
| } |
| if {$nf < 1} { |
| puts stderr "NF must be >= 1" |
| dict set parameters nf 1 |
| } |
| if {$m < 1} { |
| puts stderr "M must be >= 1" |
| dict set parameters m 1 |
| } |
| if {$diffcov < 20 } { |
| puts stderr "Diffusion contact coverage must be at least 20%" |
| dict set parameters diffcov 20 |
| } elseif {$diffcov > 100 } { |
| puts stderr "Diffusion contact coverage can't be more than 100%" |
| dict set parameters diffcov 100 |
| } |
| if {$polycov < 20 } { |
| puts stderr "Poly contact coverage must be at least 20%" |
| dict set parameters polycov 20 |
| } elseif {$polycov > 100 } { |
| puts stderr "Poly contact coverage can't be more than 100%" |
| dict set parameters polycov 100 |
| } |
| |
| if {[catch {expr abs($viasrc)}]} { |
| puts stderr "Source via coverage must be numeric!" |
| dict set parameters viasrc 100 |
| } elseif {[expr abs($viasrc)] > 100} { |
| puts stderr "Source via coverage can't be more than 100%" |
| dict set parameters viasrc 100 |
| } |
| if {[catch {expr abs($viadrn)}]} { |
| puts stderr "Drain via coverage must be numeric!" |
| dict set parameters viadrn 100 |
| } elseif {[expr abs($viadrn)] > 100} { |
| puts stderr "Drain via coverage can't be more than 100%" |
| dict set parameters viadrn 100 |
| } |
| if {[catch {expr abs($viagate)}]} { |
| puts stderr "Gate via coverage must be numeric!" |
| dict set parameters viagate 100 |
| } elseif {[expr abs($viagate)] > 100} { |
| puts stderr "Gate via coverage can't be more than 100%" |
| dict set parameters viagate 100 |
| } |
| if {[catch {expr abs($viagb)}]} { |
| puts stderr "Guard ring bottom via coverage must be numeric!" |
| dict set parameters viagb 0 |
| } elseif {[expr abs($viagb)] > 100} { |
| puts stderr "Guard ring bottom via coverage can't be more than 100%" |
| dict set parameters viagb 100 |
| } |
| if {[catch {expr abs($viagt)}]} { |
| puts stderr "Guard ring top via coverage must be numeric!" |
| dict set parameters viagt 0 |
| } elseif {[expr abs($viagt)] > 100} { |
| puts stderr "Guard ring top via coverage can't be more than 100%" |
| dict set parameters viagt 100 |
| } |
| if {[catch {expr abs($viagr)}]} { |
| puts stderr "Guard ring right via coverage must be numeric!" |
| dict set parameters viagr 0 |
| } elseif {[expr abs($viagr)] > 100} { |
| puts stderr "Guard ring right via coverage can't be more than 100%" |
| dict set parameters viagr 100 |
| } |
| if {[catch {expr abs($viagl)}]} { |
| puts stderr "Guard ring left via coverage must be numeric!" |
| dict set parameters viagl 0 |
| } elseif {[expr abs($viagl)] > 100} { |
| puts stderr "Guard ring left via coverage can't be more than 100%" |
| dict set parameters viagl 100 |
| } |
| |
| # Values must satisfy diffusion-to-tap spacing of 20um. |
| # Therefore the maximum of guard ring width or height cannot exceed 40um. |
| # If in violation, reduce counts first, as these are easiest to recover |
| # by duplicating the device and overlapping the wells. |
| set origm $m |
| set orignf $nf |
| while true { |
| set yext [expr ($w + 3.0) * $m] |
| set xext [expr ($l + 1.0) * $nf + 1.1] |
| if {[expr min($xext, $yext)] > 40.0} { |
| if {$yext > 40.0 && $m > 1} { |
| incr m -1 |
| } elseif {$xext > 40.0 && $nf > 1} { |
| incr nf -1 |
| } elseif {$yext > 40.0} { |
| set w 37 |
| puts -nonewline stderr "Transistor width must be < 37 um" |
| puts stderr " to avoid tap spacing violation." |
| dict set parameters w $w |
| } elseif {$xext > 40.0} { |
| set l 37.9 |
| puts -nonewline stderr "Transistor length must be < 37.9 um" |
| puts stderr " to avoid tap spacing violation." |
| dict set parameters l $l |
| } |
| } else { |
| break |
| } |
| } |
| if {$m != $origm} { |
| puts stderr "Y repeat reduced to prevent tap distance violation" |
| dict set parameters m $m |
| } |
| if {$nf != $orignf} { |
| puts stderr "X repeat reduced to prevent tap distance violation" |
| dict set parameters nf $nf |
| } |
| |
| return $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__nfet_01v8 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_01v8_lvt_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__nfet_01v8_lvt $parameters] |
| } |
| |
| proc sky130::sky130_fd_bs_flash__special_sonosfet_star_check {parameters} { |
| return [sky130::mos_check sky130_fd_bs_flash__special_sonosfet_star $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_g5v0d10v5_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__nfet_g5v0d10v5 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_05v0_nvt_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__nfet_05v0_nvt $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__nfet_03v3_nvt_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__nfet_03v3_nvt $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__pfet_01v8 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_lvt_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__pfet_01v8_lvt $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_01v8_hvt_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__pfet_01v8_hvt $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__pfet_g5v0d10v5_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__pfet_g5v0d10v5 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_lvt_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__cap_var_lvt $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_hvt_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__cap_var_hvt $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_var_check {parameters} { |
| return [sky130::mos_check sky130_fd_pr__cap_var $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # Fixed device: Specify all user-editable default values |
| # |
| # deltax --- Additional horizontal space between devices |
| # deltay --- Additional vertical space between devices |
| # nx --- Number of arrayed devices in X |
| # ny --- Number of arrayed devices in Y |
| # |
| # Note that these values, specifically nx, ny, deltax, |
| # and deltay, are properties of the instance, not the cell. |
| # They translate to the instance array x and y counts; while |
| # deltax is the x pitch less the cell width, and deltay is the |
| # y pitch less the cell height. |
| # |
| # non-user-editable |
| # |
| # nocell --- Indicates that this cell has a predefined layout |
| # and therefore there is no cell to draw. |
| # xstep --- Width of the cell (nominal array pitch in X) |
| # ystep --- Height of the cell (nominal array pitch in Y) |
| #---------------------------------------------------------------- |
| |
| # Fixed-layout devices (from sky130_fd_pr_base, _rf, and _rf2 libraries) |
| # |
| # Bipolar transistors: |
| # |
| # sky130_fd_pr__rf_npn_05v5_W1p00L1p00 |
| # sky130_fd_pr__rf_npn_05v5_W1p00L2p00 |
| # sky130_fd_pr__rf_pnp_05v5_W3p40L3p40 |
| # sky130_fd_pr__rf_pnp_05v5_W0p68L0p68 |
| # |
| # Parallel Plate Capacitors: |
| # |
| # sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldlim5 |
| # sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield |
| # sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1 |
| # sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1 |
| # |
| # Inductors: |
| # |
| # sky130_fd_pr__rf_test_coil1 |
| # sky130_fd_pr__rf_test_coil2 |
| # sky130_fd_pr__rf_test_coil3 |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L1p00_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 7.03 ystep 7.03} |
| } |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L2p00_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 7.03 ystep 8.03} |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W0p68L0p68_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 3.72 ystep 3.72} |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W3p40L3p40_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 6.44 ystep 6.44} |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil1_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 258 ystep 258} |
| } |
| proc sky130::sky130_fd_pr__rf_test_coil2_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 290 ystep 404} |
| } |
| proc sky130::sky130_fd_pr__rf_test_coil3_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 290 ystep 404} |
| } |
| |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldl1m5_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 11.08 ystep 11.36} |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 11.08 ystep 11.36} |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 11.08 ystep 11.36} |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1_defaults {} { |
| return {nx 1 ny 1 deltax 0 deltay 0 nocell 1 xstep 11.08 ystep 11.36} |
| } |
| |
| #---------------------------------------------------------------- |
| # Fixed device: Conversion from SPICE netlist parameters to toolkit |
| #---------------------------------------------------------------- |
| |
| proc sky130::fixed_convert {parameters} { |
| set pdkparams [dict create] |
| dict for {key value} $parameters { |
| switch -nocase $key { |
| m { |
| dict set pdkparams nx $value |
| } |
| } |
| } |
| return $pdkparams |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L1p00_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L2p00_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W0p68L0p68_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W3p40L3p40_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil1_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil2_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil3_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldl1m5_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1_convert {parameters} { |
| return [sky130::fixed_convert $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # Fixed device: Interactively specifies the fixed layout parameters |
| #---------------------------------------------------------------- |
| |
| proc sky130::fixed_dialog {parameters} { |
| # Instance fields: nx, ny, pitchx, pitchy |
| # Editable fields: nx, ny, deltax, deltay |
| # Non-editable fields: nocell, xstep, ystep |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # "nocell" field causes nx and ny to be dropped in from |
| # "array count". Also "pitchx" and "pitchy" are passed |
| # in internal units. Convert these to microns and generate |
| # If there is no pitchx and pitchy, then the device has not |
| # yet been created, so keep the deltax and deltay defaults. |
| |
| if [dict exists $parameters pitchx] { |
| set pitchux [magic::i2u $pitchx] |
| set stepux [magic::spice2float $xstep] |
| set deltax [magic::3digitpastdecimal [expr $pitchux - $stepux]] |
| # An array size 1 should not cause deltax to go negative |
| if {$deltax < 0.0} {set deltax 0.0} |
| dict set parameters deltax $deltax |
| } |
| if [dict exists $parameters pitchy] { |
| set pitchuy [magic::i2u $pitchy] |
| set stepuy [magic::spice2float $ystep] |
| set deltay [magic::3digitpastdecimal [expr $pitchuy - $stepuy]] |
| # An array size 1 should not cause deltay to go negative |
| if {$deltay < 0.0} {set deltay 0.0} |
| dict set parameters deltay $deltay |
| } |
| |
| magic::add_entry nx "NX" $parameters |
| magic::add_entry ny "NY" $parameters |
| magic::add_entry deltax "X step (um)" $parameters |
| magic::add_entry deltay "Y step (um)" $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L1p00_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L2p00_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W0p68L0p68_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W3p40L3p40_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil1_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil2_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil3_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldl1m5_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1_dialog {parameters} { |
| sky130::fixed_dialog $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| # Fixed device: Draw the device |
| #---------------------------------------------------------------- |
| |
| proc sky130::fixed_draw {devname parameters} { |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # This cell declares "nocell" in parameters, so it needs to |
| # instance the cell and set properties. |
| |
| # Instantiate the cell. The name corresponds to the cell in the sky130_fd_pr_* directory. |
| set instname [getcell ${devname}] |
| |
| set deltax [magic::spice2float $deltax] |
| set deltay [magic::spice2float $deltay] |
| set xstep [magic::spice2float $xstep] |
| set ystep [magic::spice2float $ystep] |
| |
| # Array stepping |
| if {$nx > 1 || $ny > 1} { |
| set xstep [expr $xstep + $deltax] |
| set ystep [expr $ystep + $deltay] |
| box size ${xstep}um ${ystep}um |
| array $nx $ny |
| } |
| select cell $instname |
| expand |
| return $instname |
| } |
| |
| #---------------------------------------------------------------- |
| # No additional parameters declared for drawing |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L1p00_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__rf_npn_05v5_W1p00L1p00 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L2p00_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__rf_npn_05v5_W1p00L2p00 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W0p68L0p68_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__rf_pnp_05v5_W0p68L0p68 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W3p40L3p40_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__rf_pnp_05v5_W3p40L3p40 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil1_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__rf_test_coil1 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil2_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__rf_test_coil2 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil3_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__rf_test_coil3 $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldl1m5_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldl1m5 $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1 $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1_draw {parameters} { |
| return [sky130::fixed_draw sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1 $parameters] |
| } |
| |
| #---------------------------------------------------------------- |
| # Fixed device: Check device parameters for out-of-bounds values |
| #---------------------------------------------------------------- |
| |
| proc sky130::fixed_check {parameters} { |
| |
| # Set a local variable for each parameter (e.g., $l, $w, etc.) |
| foreach key [dict keys $parameters] { |
| set $key [dict get $parameters $key] |
| } |
| |
| # Normalize distance units to microns |
| set deltax [magic::spice2float $deltax -1] |
| set deltax [magic::3digitpastdecimal $deltax] |
| set deltay [magic::spice2float $deltay -1] |
| set deltay [magic::3digitpastdecimal $deltay] |
| |
| # nx, ny must be integer |
| if {![string is int $nx]} { |
| puts stderr "NX must be an integer!" |
| dict set parameters nx 1 |
| } |
| if {![string is int $ny]} { |
| puts stderr "NY must be an integer!" |
| dict set parameters nx 1 |
| } |
| |
| # Number of devices in X and Y must be at least 1 |
| if {$nx < 1} { |
| puts stderr "NX must be >= 1" |
| dict set parameters nx 1 |
| } |
| if {$ny < 1} { |
| puts stderr "NY must be >= 1" |
| dict set parameters nx 1 |
| } |
| # Step less than zero violates DRC |
| if {$deltax < 0} { |
| puts stderr "X step must be >= 0" |
| dict set parameters deltax 0 |
| } |
| if {$deltay < 0} { |
| puts stderr "Y step must be >= 0" |
| dict set parameters deltay 0 |
| } |
| return $parameters |
| } |
| |
| #---------------------------------------------------------------- |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L1p00_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_npn_05v5_W1p00L2p00_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W0p68L0p68_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_pnp_05v5_W3p40L3p40_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil1_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil2_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__rf_test_coil3_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2m3m4_shieldl1m5_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_11p5x11p7_m1m2_noshield_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_08p6x07p8_m1m2_shieldl1_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| proc sky130::sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1_check {parameters} { |
| return [sky130::fixed_check $parameters] |
| } |
| #------------------------------------------------------------------- |
| # General-purpose routines for the PDK script in all technologies |
| #------------------------------------------------------------------- |
| # |
| #---------------------------------------- |
| # Number Conversion Functions |
| #---------------------------------------- |
| |
| #--------------------- |
| # Microns to Lambda |
| #--------------------- |
| proc magic::u2l {micron} { |
| set techlambda [magic::tech lambda] |
| set tech1 [lindex $techlambda 1] |
| set tech0 [lindex $techlambda 0] |
| set tscale [expr {$tech1 / $tech0}] |
| set lambdaout [expr {((round([magic::cif scale output] * 10000)) / 10000.0)}] |
| return [expr $micron / ($lambdaout*$tscale) ] |
| } |
| |
| #--------------------- |
| # Lambda to Microns |
| #--------------------- |
| proc magic::l2u {lambda} { |
| set techlambda [magic::tech lambda] |
| set tech1 [lindex $techlambda 1] ; set tech0 [lindex $techlambda 0] |
| set tscale [expr {$tech1 / $tech0}] |
| set lambdaout [expr {((round([magic::cif scale output] * 10000)) / 10000.0)}] |
| return [expr $lambda * $lambdaout * $tscale ] |
| } |
| |
| #--------------------- |
| # Internal to Microns |
| #--------------------- |
| proc magic::i2u { value } { |
| return [expr {((round([magic::cif scale output] * 10000)) / 10000.0) * $value}] |
| } |
| |
| #--------------------- |
| # Microns to Internal |
| #--------------------- |
| proc magic::u2i {value} { |
| return [expr {$value / ((round([magic::cif scale output] * 10000)) / 10000.0)}] |
| } |
| |
| #--------------------- |
| # Float to Spice |
| #--------------------- |
| proc magic::float2spice {value} { |
| if {$value >= 1.0e+6} { |
| set exponent 1e+6 |
| set unit "meg" |
| } elseif {$value >= 1.0e+3} { |
| set exponent 1e+3 |
| set unit "k" |
| } elseif { $value >= 1} { |
| set exponent 1 |
| set unit "" |
| } elseif {$value >= 1.0e-3} { |
| set exponent 1e-3 |
| set unit "m" |
| } elseif {$value >= 1.0e-6} { |
| set exponent 1e-6 |
| set unit "u" |
| } elseif {$value >= 1.0e-9} { |
| set exponent 1e-9 |
| set unit "n" |
| } elseif {$value >= 1.0e-12} { |
| set exponent 1e-12 |
| set unit "p" |
| } elseif {$value >= 1.0e-15} { |
| set exponent 1e-15 |
| set unit "f" |
| } else { |
| set exponent 1e-18 |
| set unit "a" |
| } |
| set val [expr $value / $exponent] |
| set val [expr int($val * 1000) / 1000.0] |
| if {$val == 0} {set unit ""} |
| return $val$unit |
| } |
| |
| #--------------------- |
| # Spice to Float |
| #--------------------- |
| proc magic::spice2float {value {faultval 0.0}} { |
| # Remove trailing units, at least for some common combinations |
| set value [string tolower $value] |
| set value [string map {um u nm n uF n nF n pF p aF a} $value] |
| set value [string map {meg "* 1.0e6" k "* 1.0e3" m "* 1.0e-3" u "* 1.0e-6" \ |
| n "* 1.0 e-9" p "* 1.0e-12" f "* 1.0e-15" a "* 1.0e-15"} $value] |
| if {[catch {set rval [expr $value]}]} { |
| puts stderr "Value is not numeric!" |
| set rval $faultval |
| } |
| return $rval |
| } |
| |
| #--------------------- |
| # Numeric Precision |
| #--------------------- |
| proc magic::3digitpastdecimal {value} { |
| set new [expr int([expr $value * 1000 + 0.5 ]) / 1000.0] |
| return $new |
| } |
| |
| #------------------------------------------------------------------- |
| # File Access Functions |
| #------------------------------------------------------------------- |
| |
| #------------------------------------------------------------------- |
| # Ensures that a cell name does not already exist, either in |
| # memory or on disk. Modifies the name until it does. |
| #------------------------------------------------------------------- |
| proc magic:cellnameunique {cellname} { |
| set i 0 |
| set newname $cellname |
| while {[cellname list exists $newname] != 0 || [magic::searchcellondisk $newname] != 0} { |
| incr i |
| set newname ${cellname}_$i |
| } |
| return $newname |
| } |
| |
| #------------------------------------------------------------------- |
| # Looks to see if a cell exists on disk |
| #------------------------------------------------------------------- |
| proc magic::searchcellondisk {name} { |
| set rlist {} |
| foreach dir [path search] { |
| set ftry [file join $dir ${name}.mag] |
| if [file exists $ftry] { |
| return 1 |
| } |
| } |
| return 0 |
| } |
| |
| #------------------------------------------------------------------- |
| # Checks to see if a cell already exists on disk or in memory |
| #------------------------------------------------------------------- |
| proc magic::iscellnameunique {cellname} { |
| if {[cellname list exists $cellname] == 0 && [magic::searchcellondisk $cellname] == 0} { |
| return 1 |
| } else { |
| return 0 |
| } |
| } |
| |
| #-------------------------------------------------------------- |
| # Procedure that checks the user's "ip" subdirectory on startup |
| # and adds each one's maglef subdirectory to the path. |
| #-------------------------------------------------------------- |
| |
| proc magic::query_mylib_ip {} { |
| global TECHPATH |
| global env |
| if [catch {set home $env(SUDO_USER)}] { |
| set home $env(USER) |
| } |
| set homedir /home/${home} |
| set ip_dirs [glob -directory ${homedir}/design/ip *] |
| set proj_dir [pwd] |
| set config_dir .config |
| set info_dir ${proj_dir}/${config_dir} |
| if {![file exists ${info_dir}]} { |
| set config_dir .ef-config |
| set info_dir ${proj_dir}/${config_dir} |
| } |
| |
| set info_file ${info_dir}/info |
| set depends [dict create] |
| if {![catch {open $info_file r} ifd]} { |
| set depsec false |
| while {[gets $ifd line] >= 0} { |
| if {[string first dependencies: $line] >= 0} { |
| set depsec true |
| } |
| if {$depsec} { |
| if {[string first version: $line] >= 0} { |
| if {$ipname != ""} { |
| set ipvers [string trim [lindex [split $line] 1] '] |
| dict set depends $ipname $ipvers |
| set ipname "" |
| } else { |
| puts stderr "Badly formatted info file in ${config_dir}!" |
| } |
| } else { |
| set ipname [string trim $line :] |
| } |
| } |
| } |
| } |
| |
| foreach dir $ip_dirs { |
| # Version handling: version dependencies are found in |
| # ${config_dir}/info. For all other IP, use the most recent |
| # version number. |
| set ipname [lindex [file split $dir] end] |
| if {![catch {set version [dict get $depends $ipname]}]} { |
| if {[file isdirectory ${dir}/${version}/maglef]} { |
| addpath ${dir}/${version}/maglef |
| continue |
| } else { |
| puts stderr "ERROR: Dependency ${ipname} version ${version} does not exist" |
| } |
| } |
| |
| # Secondary directory is the version number. Use the highest |
| # version available. |
| |
| set sub_dirs {} |
| catch {set sub_dirs [glob -directory $dir *]} |
| set maxver 0.0 |
| foreach subdir $sub_dirs { |
| set vidx [string last / $subdir] |
| incr vidx |
| set version [string range $subdir $vidx end] |
| if {$version > $maxver} { |
| set maxver $version |
| } |
| } |
| if {[file exists ${dir}/${maxver}/maglef]} { |
| # Compatibility rule: foundry name must match. |
| # Get foundry name from ${config_dir}/techdir symbolic link reference |
| if {[file exists ${dir}/${maxver}/${config_dir}/techdir]} { |
| set technodedir [file link ${dir}/${maxver}/${config_dir}/techdir] |
| set nidx [string last / $technodedir] |
| set techdir [string range $technodedir 0 $nidx-1] |
| if {$techdir == $TECHPATH} { |
| addpath ${dir}/${maxver}/maglef |
| } |
| } |
| } |
| } |
| } |
| |
| #-------------------------------------------------------------- |
| # Procedure that checks the user's design directory on startup |
| # and adds each one's mag subdirectory to the path. |
| #-------------------------------------------------------------- |
| |
| proc magic::query_my_projects {} { |
| global TECHPATH |
| global env |
| if [catch {set home $env(SUDO_USER)}] { |
| set home $env(USER) |
| } |
| set homedir /home/${home} |
| set proj_dirs [glob -directory ${homedir}/design *] |
| foreach dir $proj_dirs { |
| # Compatibility rule: foundry name must match. |
| # Get foundry name from ${config_dir}/techdir symbolic link reference |
| if {[file exists ${dir}/mag]} { |
| set config_dir .config |
| set tech_dir ${dir}/${config_dir} |
| if {![file exists ${tech_dir}]} { |
| set config_dir .ef-config |
| set tech_dir ${dir}/${config_dir} |
| } |
| if {[file exists ${dir}/${config_dir}/techdir]} { |
| set technodedir [file link ${dir}/${config_dir}/techdir] |
| set nidx [string last / $technodedir] |
| set techdir [string range $technodedir 0 $nidx-1] |
| if {$techdir == $TECHPATH} { |
| addpath ${dir}/mag |
| } |
| } |
| } |
| } |
| } |
| |
| #---------------------------------------------------------------- |
