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designs: ihp-sg13g2: Add I2C GPIO Expander
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Simple I2C GPIO expander with 8 GPIO pins.

This design is a full chip layout with IO ring included. It's
missing metal fill and therefore not tape-out ready but a new
example to demonstrate OpenROAD and/or the IHP PDK due it's
short build time.

Signed-off-by: Daniel Schultz <[email protected]>
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@dnltz
dnltz committed Jan 5, 2025
1 parent 1cbce35 commit bf72b3f
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