SPICE is a general-purpose, open-source analog electronic circuit simulator. It stands for Simulation Program with Integrated Circuit Emphasis. ngspice is a successor, and is easily installable on Linux. It’s the simulator I’ve used to explore the Skywater 130 PDK.

Here’s an example spice simulation file that I used to simulate the inverter I drew.

And here’s a nice demo of me showing how a flip-flop works by simulating a Sky130 D type flip flop with SPICE.

Course feedback

At first I wasn’t interested in testing at all, but by the end of the course somehow it got quite fascinating just to figure out all the ways to test the design.

Renaldas Zioma (digital course)