@Jorge Marin I believe gfmpw-1 only has a single power supply which can be anywhere from 3.3V to 6.0V. The standard cell devices are all 6.0V compatible, I think. I don’t think there’s support for 1.8V devices.

@Jorge Marin: I understand from Mehdi that he has custom I/O cells, so I'm not sure what shuttle run this set of projects is going to be taped out on. If it's not GFMPW through Efabless, then anything I've said may not be true, and probably @mehdi has the final word on it.

It's not through Efabless.

@mehdi can you please clarify this point? your advice on how to proceed in our situation would also be appreciated (i.e. to change devices of our designs or do something else)

@Jorge Marin , I am confused here about what your question is. If you look at this thread: https://github.com/sscs-ose/DC23-LTC2/pull/1#issuecomment-1802173265 I explained that there are 3.3v and 5v transistors ( I don't remember they had 1.8v devices, so not sure where that is coming from?). Regarding the voltages, you can always use an analog IO to generate 3.3v or even lower. And that's what we did in our test chip. As I said in previous meetings, please simulate the padring we provided and try to verify your own use case (i.e. lowering voltages for bias etc..). Please make sure to use the same PDK version as the coming MPW-1, we are likely to use the same version. Regarding the Useful links: https://github.com/idea-fasoc/openfasoc-tapeouts/tree/main/gf180mcu_padframe https://gf180mcu-pdk.readthedocs.io/en/latest/IPs/IO/gf180mcu_fd_io/index.html

@Alfonso Cortés @Junbeom Park @Akira Tsuchiya @Mario Romero fyi