spice2sch

A CLI to convert SkyWater SKY130 spice files into xschem .sch files. Designed for sifferman/sky130_schematics. Available from PyPI.

Use without installing

For uv users

uvx spice2sch -h

Installation

For uv users (recommended)

uv tool install spice2sch

For pip users

pip install spice2sch

Usage

Caution

The output file will be overwritten without warning.

Specify and input .spice and and output .sch file.

spice2sch -i file.spice -o file.sch

Input and output will default to stdin and stdout making this equivalent to the above command:

cat file.spice | spice2sch > file.sch

Example

1. Generate a sch file. The following command uses uvx to use the package without downloading, and pipes a spice netlist from the clipboard to the tool.

wl-paste | uvx spice2sch -o sky130_fd_sc_hd__xor3_4.sch

2. Open the generated .sch file and manually arrange components. After running tool: After organizing gates:

Limitations

• Currently this program will assume all components are transistors. Using this on a .spice file with other components will not work.
• Although schematics will pass a Layout Versus Schematic (LVS) check, all components must be manually rearranged.

Running from source with uv

Clone the repo

git clone git@github.com:eliahreeves/spice2sch.git
cd spice-to-sh

Build and run

uv run spice2sch

Note

You may need to remove existing installations using uv tool uninstall spice2sch or similar in order to avoid namespace confilcts.