Hi guys, I just started using sky130pdk. Here, the models given in examples are labelled as FET device. Is there normal device available or only FET's are available?

Xschem comes with a `devices`/ library containing all ideal spice components like capacitor, resistor, inductr, voltage source, current source, controlled current/voltage sources and so on. This library includes also specific xschem symbols for input/output pins, net labels, code blocks. The

sky130_fd_pr/

directory contains all sky130 silicon devices, these are mosfets, silicon/poly resistor, mos varactors, Metal Insulator Metal (MIM) capacitors, bipolar transistors, diodes, ...

my doubt was is

sky130_fd_pr/

does have mosfets or is it only FINFETS? regarding corner files , in

sky130_fd_pr/corner.sym

Only corner tt is available, can we directly change or should we have model file for PVT variation for slow, fast and other cases? I attach the image for reference.

The various

nfet_*

and

pfet_*

models are MOS transistors, there are no FinFets. for the corner you can set

corner=tt, corner=ff, corner=ss, forner=fs, corner=sf

. the

*_mm

variants (

tt_mm, ss_mm, ff_mm, fs_mm ....

) are for mismatch/montecarlo simulations. Don't use these unless you are running multiple simulations to see the effect of variations in your circuit.

ok thanks for the heads up.

Yes, xschem comes with numerous examples, you can look into these as well as learn the ngspice user manual.