| * ngspice digital cells, Uros Platise, http://http://www.clifford.at/yosys |
| |
| .global d_low d_high |
| |
| .model digital_pulldown d_pulldown |
| .model digital_pullup d_pullup |
| |
| Ad_pulldown d_low digital_pulldown |
| Ad_pullup d_high digital_pullup |
| |
| .SUBCKT BUF A Y |
| .model buffer1 d_buffer |
| Abuf A Y buffer1 |
| .ENDS NOT |
| |
| .SUBCKT NOT A Y |
| .model not1 d_inverter |
| Anot A Y not1 |
| .ENDS NOT |
| |
| .SUBCKT NAND A B Y |
| .model nand1 d_nand |
| Anand [A B] Y nand1 |
| .ENDS NAND |
| |
| .SUBCKT NOR A B Y |
| .model nor1 d_nor |
| Anand [A B] Y nor1 |
| .ENDS NOR |
| |
| .SUBCKT DLATCH E D Q |
| .model latch1 d_latch |
| Alatch D E null null Q nQ latch1 |
| .ENDS DLATCH |
| |
| .SUBCKT DFF C D Q |
| .model dff1 d_dff (clk_delay = 13.0e-9 set_delay = 25.0e-9 |
| + reset_delay = 27.0e-9 ic = 2 rise_delay = 10.0e-9 |
| + fall_delay = 3e-9) |
| Adff D C null null Q nQ dff1 |
| .ENDS DFF |
| |
| .SUBCKT DFFSR C D Q S R |
| .model dffsr1 d_dff (clk_delay = 0.1e-9 set_delay = 0.1e-9 |
| + reset_delay = 0.1e-9 ic = 0 rise_delay = 0.1e-9 |
| + fall_delay = 0.1e-9) |
| Adffsr D C S R Q nQ dffsr1 |
| .ENDS DFF |
