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#sky130
Title
m

Matt Liberty

02/03/2022, 9:49 PM
Are there power switches in the sky130 library?
t

Tim Edwards

02/03/2022, 11:18 PM
No, but @User made some waffle-geometry power transistors that were put on the first ChipIgnite run.
u

20Mhz

02/03/2022, 11:38 PM
How about these ? sky130_fd_sc_lp__sleep_pargate_plv
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Matt Liberty

02/04/2022, 12:12 AM
u

20Mhz

02/04/2022, 12:15 AM
It's probably not searching inside the cell repo, you can try find in a local copy . Found it here: https://github.com/google/skywater-pdk-libs-sky130_fd_sc_lp cells/sleep_pargate_plv/definition.json
m

Matt Liberty

02/04/2022, 12:23 AM
Thanks. sky130_fd_sc_lp is totally missing in https://antmicro-skywater-pdk-docs.readthedocs.io/
@User any comments on this cell?
t

Tim Edwards

02/04/2022, 12:29 AM
Are you looking for power switching for an entire circuit or a standard cell? The sky130_fd_sc_lp cells are standard cells that switch between normal and standby power for some portion of a digital standard cell layout. Which might be what you're looking for?
m

Matt Liberty

02/04/2022, 12:29 AM
I'm looking to power off a domain of stdcells
ie no leakage
t

Tim Edwards

02/04/2022, 12:31 AM
Then the LP library cells might be correct to use. The documentation problem was handed down from SkyWater. There is no documentation for the standard cell libraries. This is particularly problematic for those power domain handling cells, since it's not at all clear when they are supposed to be used, and how.