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by 15155 481 days ago
> require various business agreements to be in place.

I assume they require an NDA for their PDK? Or can projects still be meaningfully open-source with the existing one?
2 comments
jauntywundrkind 481 days ago
SkyWater's 130nm has been used for all (most?) of the Efabless × Google MPW (multi project wafer) runs. That PDK was open sourced as part of that initial effort.

https://www.skywatertechnology.com/first-google-sponsored-mp...

https://github.com/google/skywater-pdk

There's a bunch of other PDKs running around now too. But progress does seem to have distinctly tapered off.

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kragen 481 days ago
A bunch? I've only seen three—but that's still a huge improvement over zero pre-Skywater.
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pclmulqdq 481 days ago
Most PDKs have an NDA, but Skywater is an exception. Also, most PDKs have some software restrictions on their standard cells because they never tested them with the open-source tools, but with difficulty you can use their design rules in software like MAGIC.
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