**.subckt vco vctrl
*.ipin vctrl
vss vss GND {vss} 
vdd vdd vss {vdd} 
C1 out vss 10f m=1
Vctrl vctrl vss DC {vctrl} 
x5 vdd out out4 vss inverter_min_x2
x4 vdd out4 out3 vss inverter_min_x2
C2 out_wp vss 10f m=1
x6 vdd out_wp out4_wp vss inverter_min_x2
x7 vdd out4_wp out3_wp vss inverter_min_x2
XM1 net1 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=8 m=8 
XM7 vbp vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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 vbp vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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 net11 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=8 m=8 
XM3 net12 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=8 m=8 
XM4 net2 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=4 m=4 
XM5 net3 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=4 m=4 
XM6 net4 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=4 m=4 
XM9 net5 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=8 m=8 
XM10 net6 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=8 m=8 
XM11 net7 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=8 m=8 
XM12 net8 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=4 m=4 
XM13 net9 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=4 m=4 
XM14 net10 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=4 m=4 
x1 net1 out1 out3 net2 vdd vss inverter_csvco
x2 net11 out2 out1 net3 vdd vss inverter_csvco
x3 net12 out3 out2 net4 vdd vss inverter_csvco
x8 net7 out1_wp out3_wp net8 vdd vss inverter_csvco_pex_c
x9 net5 out2_wp out1_wp net9 vdd vss inverter_csvco_pex_c
x10 net6 out3_wp out2_wp net10 vdd vss inverter_csvco_pex_c
**** begin user architecture code


* Parameters
.param kp = 0.9
.param vdd = kp*1.8
.param vss = 0.0
.param vctrl = 1.0

.options TEMP = 100.0

* Models
.lib ~/skywater/skywater-pdk/libraries/sky130_fd_pr_ngspice/latest/models/corners/sky130.lib SS
.include ~/sky130-mpw2-fulgor/inverter_csvco/sch/simulations/inverter_csvco_pex_c.spice

* Data to save
.save all

.ic v(out1) = 0.0
.ic v(out2) = 0.0
.ic v(out3) = 0.0
.ic v(out4) = 0.0
.ic v(out) = 0.0
.ic v(out1_wp) = 0.0
.ic v(out2_wp) = 0.0
.ic v(out3_wp) = 0.0
.ic v(out4_wp) = 0.0
.ic v(out_wp) = 0.0

* Simulation
.control
	tran 0.01ns 50ns
	meas tran To trig v(out) val=0.9 fall=5 targ v(out) val=0.9 fall=15
	meas tran To_wp trig v(out_wp) val=0.9 fall=5 targ v(out_wp) val=0.9 fall=15
	let T = To/10.0
	let T_wp = To_wp/10.0
	let f = 1/T
	let f_wp = 1/T_wp
	echo .
	echo --- VCO ----
	print T f
	echo --- VCO_wp ----
	print T_wp f_wp
	plot v(out) v(out_wp)+2
.endc


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

* expanding   symbol:  inverter_min_x2/sch/inverter_min_x2.sym # of pins=4
* sym_path: /home/dhernando/sky130-mpw2-fulgor/inverter_min_x2/sch/inverter_min_x2.sym
* sch_path: /home/dhernando/sky130-mpw2-fulgor/inverter_min_x2/sch/inverter_min_x2.sch
.subckt inverter_min_x2  vdd out in vss
*.iopin vss
*.ipin in
*.opin out
*.iopin vdd
XM2 out in vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.84 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=2 m=2 
XM1 out in vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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=2 m=2 
.ends


* expanding   symbol:  inverter_csvco/sch/inverter_csvco.sym # of pins=6
* sym_path: /home/dhernando/sky130-mpw2-fulgor/inverter_csvco/sch/inverter_csvco.sym
* sch_path: /home/dhernando/sky130-mpw2-fulgor/inverter_csvco/sch/inverter_csvco.sch
.subckt inverter_csvco  vdd out in vss vbulkp vbulkn
*.iopin vss
*.ipin in
*.opin out
*.iopin vdd
*.iopin vbulkn
*.iopin vbulkp
XM1 out in vss vbulkn sky130_fd_pr__nfet_01v8 L=0.2 W=0.75 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 in vdd vbulkp sky130_fd_pr__pfet_01v8 L=0.2 W=1.5 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