Hi I'm having a hard time using MiM capacitors in GF180 - following the xschem tests given in `libs....

Thomas Pluck

04/22/2023, 10:49 PM

Hi I'm having a hard time using MiM capacitors in GF180 - following the xschem tests given in

libs.tech

of gf180mcuC yields errors saying that the subcircuits that I can see in the file don't exist, even with some parameter tweaking. Does this have something to do with the new

sm141064_mim.ngspice

files or am i missing something obvious here? Thanks in advance for any help.

Amro Tork

04/23/2023, 3:06 AM

Which repo?

Stefan Schippers

04/23/2023, 7:07 AM

I have fixed the mimcap test case in https://github.com/StefanSchippers/globalfoundries-pdk-libs-gf180mcu_fd_pr pull requests to efabless are slow to go through so i don't know how or when this will be fixed upstream. • https://github.com/efabless/globalfoundries-pdk-libs-gf180mcu_fd_pr/commit/e95c4a8a8edcb4e02d3fd4dcad368c301c37534b • https://github.com/efabless/globalfoundries-pdk-libs-gf180mcu_fd_pr/commit/7aee56ce4d6a11d783eda4e91925e446846c415f

Stefan Schippers

04/23/2023, 7:30 AM

Basically the correct model name is

cap_mim_2f0fF

instead of

cap_mim_2p0fF

you also need to add this line in the netlist, it was missing.

.lib $::180MCU_MODELS/sm141064.ngspice cap_mim

Thomas Pluck

04/23/2023, 10:07 AM

Excellent, thank you!

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