| **.subckt tb_div_by_5_pex_c |
| VSS vss GND {vss} |
| VDD vdd vss {vdd} |
| x1 nclk_2 vss A vdd clk_2 net14 net15 net16 net17 div_by_2_pex_c |
| Vref net1 vss PULSE(0 {vin} 0 1p 1p {Tref/2} {Tref}) DC {vin} AC 0 |
| x3 vdd net2 net1 vss inverter_min_x2_pex_c |
| x4 vdd A net2 vss inverter_min_x4_pex_c |
| x5 vss vdd net10 net11 clk_5 net9 net8 PFD_pex_c |
| x2 vdd clk_5 clk_2_buf vss nclk_2_buf net3 net4 net6 net7 net5 div_by_5_pex_c |
| x6 vdd net12 clk_2 vss inverter_min_x2_pex_c |
| x7 vdd clk_2_buf net12 vss inverter_min_x4_pex_c |
| x8 vdd net13 nclk_2 vss inverter_min_x2_pex_c |
| x9 vdd nclk_2_buf net13 vss inverter_min_x4_pex_c |
| **** begin user architecture code |
| |
| |
| |
| * Parameters |
| .param kp = 1.0 |
| .param vdd = kp*1.8 |
| .param vss = 0.0 |
| .param vin = vdd |
| .param fref = 1e9 |
| .param Tref = 1/fref |
| .param C = 1f |
| .param iref=100u |
| |
| .options TEMP = 100.0 |
| .options RSHUNT = 1e20 |
| |
| * Models |
| .lib ~/skywater/skywater-pdk/libraries/sky130_fd_pr_ngspice/latest/models/corners/sky130.lib SS |
| .include ~/caravel_analog_fulgor/xschem/simulations/inverter_min_x2_pex_c.spice |
| .include ~/caravel_analog_fulgor/xschem/simulations/inverter_min_x4_pex_c.spice |
| .include ~/caravel_analog_fulgor/xschem/simulations/div_by_2_pex_c.spice |
| .include ~/caravel_analog_fulgor/xschem/simulations/div_by_5_pex_c.spice |
| .include ~/caravel_analog_fulgor/xschem/simulations/PFD_pex_c.spice |
| |
| * Data to save |
| .save all |
| |
| .ic v(A) = 0.0 |
| .ic v(x2.q0) = 0.0 |
| .ic v(x2.nq0) = 0.0 |
| .ic v(x2.q1) = 0.0 |
| .ic v(x2.nq1) = 0.0 |
| .ic v(x2.q1_shift) = 0.0 |
| .ic v(x2.nq1_shift) = 0.0 |
| .ic v(x2.q2) = 0.0 |
| .ic v(x2.nq2) = 0.0 |
| .ic v(x2.x1.a) = 0.0 |
| .ic v(x2.x1.na) = 0.0 |
| .ic v(x2.x1.D_d) = 0.0 |
| .ic v(x2.x1.nD_d) = 0.0 |
| .ic v(clk_2) = 0.0 |
| .ic v(nclk_2) = 0.0 |
| .ic v(clk_5) |
| |
| * Simulation |
| .control |
| tran 0.01ns 200ns |
| write tb_div_by_5_tran.raw |
| plot v(clk_2) v(A) v(nclk_2)+2 v(A)+2 |
| plot v(clk_5) v(clk_2_buf) v(A) |
| .endc |
| |
| |
| |
| **** end user architecture code |
| **.ends |
| .GLOBAL GND |
| ** flattened .save nodes |
| .end |