**.subckt ring_vco
x1 10 out_ring o1 9 vss not
x2 10 o1 o2 9 vss not
x3 10 o2 o3 9 vss not
x4 10 o3 o4 9 vss not
x5 10 o4 o5 9 vss not
x6 10 o5 o6 9 vss not
XM1 out_ring net1 9 vss sky130_fd_pr__nfet_01v8 W=1.2 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM2 out_ring net1 10 10 sky130_fd_pr__pfet_01v8 W=1.5 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=2 m=2 
XM3 out_vco out_ring vss vss sky130_fd_pr__nfet_01v8 W=0.6 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM4 out_vco out_ring vdd vdd sky130_fd_pr__pfet_01v8 W=1.5 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM5 10 5 vdd vdd sky130_fd_pr__pfet_01v8 W=1.5 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM6 9 in vss vss sky130_fd_pr__nfet_01v8 W=1.5 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM7 5 5 vdd vdd sky130_fd_pr__pfet_01v8 W=0.9 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM8 5 in vss vss sky130_fd_pr__nfet_01v8 W=0.9 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
x7 10 o6 o7 9 vss not
x8 10 o7 o8 9 vss not
x9 10 o8 net2 9 vss not
x10 10 net2 net3 9 vss not
x11 10 net3 net4 9 vss not
x12 10 net4 net8 9 vss not
x13 10 net8 net7 9 vss not
x14 10 net7 net6 9 vss not
x15 10 net6 net5 9 vss not
x16 10 net5 net9 9 vss not
x17 10 net9 net10 9 vss not
x18 10 net10 net11 9 vss not
x19 10 net11 net12 9 vss not
x26 10 net12 net1 en 9 vss nand
**.ends

* expanding   symbol:  not.sym # of pins=5

.subckt not  vdd in out vss vbulk
*.ipin vdd
*.ipin in
*.ipin vss
*.opin out
*.ipin vbulk
XM1 out in vss vbulk sky130_fd_pr__nfet_01v8 W=0.45 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM2 out in vdd vdd sky130_fd_pr__pfet_01v8 W=0.9 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
.ends


* expanding   symbol:  nand.sym # of pins=6

.subckt nand  vdd A OUT B vss vbulk
*.opin OUT
*.ipin vdd
*.ipin A
*.ipin B
*.ipin vss
*.ipin vbulk
XM1 net1 B vss vbulk sky130_fd_pr__nfet_01v8 W=0.45 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM2 OUT A net1 vbulk sky130_fd_pr__nfet_01v8 W=0.45 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM5 OUT A vdd vdd sky130_fd_pr__pfet_01v8 W=0.9 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
XM6 OUT B vdd vdd sky130_fd_pr__pfet_01v8 W=0.9 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1 
.ends

.end