Simulation ========== .. toctree:: :caption: Simulation :name: sim With Cadence Spectre With ngspice With your design flow? .. todo:: The SkyWater SKY130 PDK provides simulation two types of simulation models. :term:`Spectre models` for usage with :term:`Cadence Spectre` and :term:`Spice models` which are compatible with popular open source spice simulators like :term:`ngspice`.