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SkullFET

Skull shaped MOSFET cells for SKY130 and IHP SG13G2 130 nm processes

List of cells

Prerequisites

You need to SkyWater's SKY130 PDK installed in order to build the cells. Set the PDK_ROOT environment variable to point to the root of the PDK installation. You can use volare to install the PDK (and then set PDK_ROOT to ~/.volare).

Usage

  • Run make to build the GDS/LEF files
  • Run make sim_nand to run a simulation of the NAND cell (requires ngspice-41 or newer)

NAND simulation

GDS Generation

This project now supports direct GDS generation using the gdstk library:

  1. Install dependencies:

    pip install -r requirements.txt

  2. Generate the Inverter GDS file:

    python scripts/skullfet_gds.py

    To generate the NAND cell, use:

    python scripts/skullfet_gds.py -t nand

Copyright (C) 2021-2025 Uri Shaked