README.md

xschem_sky130

A modified version of XSCHEM test schematics and primitives for the Google-Skywater 130nm process design kit. This is for the case when the length and area scales are not altered by the simulation 'option scale'

This repository contains:

• sky130_fd_pr Xschem SKY130 component library
• stdcells Xschem process agnostic digital standard cell library draft
• sky130_stdcells Xschem digital standard cell library specifically targeted to the Skywater sky130_fd_sc_hd digital gate library
• sky130_tests Xschem testbenches for testing sky130_fd_pr components with NGSPICE
• sky130_fd_pr.patch Patch file (apply in sky130_fd_pr directory) to replace temp with temper, allow different sizes for nfet_01v8 and add sky130.lib_tt.spice that only loads tt corner, faster to load in ngspice.
• xschemrc Xschem configuration file.

Run xschem from this directory. It will read the xschemrc file to correctly set the search paths. Stefan