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Guild: wafer.space Community
Channel: Information / questions / Xyce for GF180MCU
After: 2025-10-31 11:59 p.m.
Before: 2025-12-01 12:00 a.m.
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[2025-11-03 4:13 a.m.] peterkinget
Has anyone run a transient simulation for a circuit in GF180MCU? I am building a big switch matrix using standard cell components manually assembled in subckts and arranged in rows and columns. Unclear if ngspice will be albe to simulate it. Right now even a 5 x 25 is very slow and we need to go much bigger. 

We have xschem schematics. Is there a 'smooth' way to start from a netlist generated from xschem and then convert it to a xyce netlist and get it to simulate?

Any worked out examples out there?


[2025-11-11 10:40 p.m.] mithro_
@Leo Moser (mole99) - Any idea?


[2025-11-12 8:46 a.m.] mole99
Sorry, I haven't done any spice simulations with gf180mcu yet.
You should be able to run a Xyce simulation from xschem: https://www.youtube.com/watch?v=fggf9DeVN5k
There are also examples in the IHP PDK if I remember right.

The only incompatibilities between Xyce and ngspice, as I understand it, are the advanced control statements that ngspice supports. If you don't use these, you should be fine.

{Embed}
Stefan Schippers
https://www.youtube.com/watch?v=fggf9DeVN5k
Setting up a Xyce simulation with Xschem, viewing results
This video explains how to do a simple DC seep simulation of a transistor with Xyce, viewing the results and doing some math operations on the waveforms.
2025-11_media/sddefault-C2A9D.jpg

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