[riffraff]

How come STM32s are not available? I thought the chip supply issues were mostly related to smaller process nodes while these should be made on relatively older ones.

[mastax]

No there's an everything shortage in electronics. Fancy chips, old chips, power chips, capacitors, connectors, epoxy resin.

https://www.digikey.com/en/resources/reports/lead-time-trend...

[jhallenworld]

The short answer is that they are not building more fabs for non-leading edge processes, like those used by STM32.

There is an interesting video about this:

https://www.youtube.com/watch?v=YJrOuBkYCMQ

[r3012]

There are variants of STM32 that are 90nm. A 90nm foundry was just announced. Not sure if they’re planning on making STM32s, probably not, but there are non-leading edge foundries being run and more are being made.

Here is an announcement from this month

https://www.eetimes.com/skywater-to-build-1-8-billion-fab-in...

[riffraff]

Pretty interesting, thanks!