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Stefan Schippers

11/09/2020, 7:39 PM
@User this can be solved by editing file (example for tt corner):
sky130_fd_pr__pfet_01v8_hvt__tt.corner.spice
and letting it include
sky130_fd_pr__pfet_01v8_hvt__tt.pm3.spice
instead of
sky130_fd_pr__pfet_01v8_hvt.pm3.spice
the default included file has 'point-size' binning , as it defines points instead of regions. the
_tt.pm3.spice
file defines reasonable continuous regions. This change is already done for nfet_01v8_lvt if this patch is applied (fixes the temp->temper and tempo coefficients issues in resistors, contribution from @User). Curious enough is the fact that for other transistors (example: pfet_01v8_lvt) this
_tt.pm3.spice
is already the default included file. I can update the patch file to make the change for these p_hvt transistors. I usually work with this patched version of the spice models as i was too much bored of these error messages. Needless to say, it must be verified if the accuracy is acceptable when using these binned models outside their 'point-sized' existence regions.