Fix wire capacitance unit in sky130, gf180 #223
+28
−29
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The
wire_spice_model()
expectsspice["wire_unit_c"]
in Farads per micrometer squared (F/um²). This is given correctly in the FreePDK45 tech but incorrectly in other technologies. This leads to a huge overestimation of wire capacitance in those technologies, leading to incorrect power values.Before this patch, the liberty files would give values like this for the rise/fall power: