xschem/simulations/tb_PFD.spice

**.subckt tb_PFD
x1 vss vdd QA A B QB Reset PFD
VSS vss GND {vss} 
VDD vdd vss {vdd} 
Vref A vss PULSE(0 {vin} 0 1p 1p {Tref/2} {Tref}) DC {vin} AC 0 
Vdiv B vss PULSE(0 {vin} 0 1p 1p {1.05*Tref/2} {1.05*Tref}) DC {vin} AC 0 
x2 net4 vdd QA net3 net2 QB vss net1 pfd_cp_interface_pex_c
**** begin user architecture code



* Parameters
.param kp = 0.9
.param vdd = kp*1.8
.param vss = 0.0
.param vin = vdd
.param fref = 100e6
.param Tref = 1/fref
.param C = 10f

.options TEMP = 100.0

* Models
.lib ~/skywater/skywater-pdk/libraries/sky130_fd_pr_ngspice/latest/models/corners/sky130.lib SS
.include ~/caravel_analog_fulgor/xschem/simulations/pfd_cp_interface_pex_c.spice

* Data to save
.save all

.ic v(A) = 0.0
.ic v(B) = 0.0

* Simulation
.control
	tran 0.01ns 400ns
	write tb_PFD_tran.raw
 	plot v(Reset) v(QB)+2 v(QA)+4 v(A)+6 v(B)+6

.endc



**** end user architecture code
**.ends

* expanding   symbol:  PFD.sym # of pins=7
* sym_path: /home/dhernando/caravel_analog_fulgor/xschem/PFD.sym
* sch_path: /home/dhernando/caravel_analog_fulgor/xschem/PFD.sch
.subckt PFD  vss vdd Up A B Down Reset
*.iopin vdd
*.iopin vss
*.ipin A
*.ipin B
*.opin Down
*.opin Up
*.iopin Reset
x1 vdd A Up Reset vss DFF
x2 vdd B Down Reset vss DFF
x3 vdd Reset Up Down vss and_pfd
.ends


* expanding   symbol:  DFF.sym # of pins=5
* sym_path: /home/dhernando/caravel_analog_fulgor/xschem/DFF.sym
* sch_path: /home/dhernando/caravel_analog_fulgor/xschem/DFF.sch
.subckt DFF  D CLK Q Reset vss
*.ipin D
*.ipin CLK
*.opin Q
*.ipin Reset
*.iopin vss
x1 D CLK Q P vss nor
x2 D P P1 Q vss nor
x3 D P P2 P1 vss nor
x4 D P1 Reset P2 vss nor
.ends


* expanding   symbol:  and_pfd.sym # of pins=5
* sym_path: /home/dhernando/caravel_analog_fulgor/xschem/and_pfd.sym
* sch_path: /home/dhernando/caravel_analog_fulgor/xschem/and_pfd.sch
.subckt and_pfd  vdd out A B vss
*.iopin vdd
*.iopin vss
*.opin out
*.ipin A
*.ipin B
XM1 out_nand A net1 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.45 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM2 out_nand A vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.9 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM3 net1 B vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.45 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM4 out_nand B net2 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.45 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM5 net2 A vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.45 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM6 out_nand B vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.9 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM7 out out_nand vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.9 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM8 out out_nand vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.45 nf=1 ad='int((nf+1)/2) * W/nf * 0.29'
+ as='int((nf+2)/2) * W/nf * 0.29' pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)'
+ nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 mult=1 m=1 
.ends


* expanding   symbol:  nor.sym # of pins=5
* sym_path: /home/dhernando/caravel_analog_fulgor/xschem/nor.sym
* sch_path: /home/dhernando/caravel_analog_fulgor/xschem/nor.sch
.subckt nor  vdd A B out vss
*.ipin A
*.ipin B
*.iopin vdd
*.opin out
*.iopin vss
XM1 out A vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.45 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM2 out B vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.45 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM4 out B net1 vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.9 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM3 net1 A vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.9 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM5 net2 B vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.9 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
XM6 out A net2 vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.9 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29'
+ pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W'
+ sa=0 sb=0 sd=0 mult=1 m=1 
.ends

.GLOBAL GND
** flattened .save nodes
.end