| * supply voltages | |
| .global Vss Vdd | |
| Vss Vss 0 DC 0 | |
| Vdd Vdd 0 DC 3 | |
| * simple transistor model | |
| .MODEL cmosn NMOS LEVEL=1 VT0=0.7 KP=110U GAMMA=0.4 LAMBDA=0.04 PHI=0.7 | |
| .MODEL cmosp PMOS LEVEL=1 VT0=-0.7 KP=50U GAMMA=0.57 LAMBDA=0.05 PHI=0.8 | |
| * load design and library | |
| .include cmos_cells.sp | |
| .include synth.sp | |
| * input signals | |
| Vclk clk 0 PULSE(0 3 1 0.1 0.1 0.8 2) | |
| Vrst rst 0 PULSE(0 3 0.5 0.1 0.1 2.9 40) | |
| Ven en 0 PULSE(0 3 0.5 0.1 0.1 5.9 8) | |
| Xuut clk rst en out0 out1 out2 COUNTER | |
| .tran 0.01 50 | |
| .control | |
| run | |
| plot v(clk) v(rst)+5 v(en)+10 v(out0)+20 v(out1)+25 v(out2)+30 | |
| .endc | |
| .end |