[guenthert]

> E9 errata made me junk the RP2350 for projects where I needed to interface with any kind of tri-state logic

Do whatever floats your boat; the rest of us just uses the documented work-around [1], i.e. either use internal pull-up or an external pull-down resistor on the bus. Note that while tri-state devices are common, it is rarely a good idea to leave a bus line floating.

As for the OTP security retrieval: high security projects, e.g. 2nd factor authorization fobs seem to be out, bummer. Another important use case I'd think are small market specialized devices for which the manufacturer wants to delay the distribution of intellectual property, e.g. by encrypting part of the code. For that the functionality seems still sufficient.

[1] https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.p...

[crest]

Afaik the internal pull-up/-down resistors aren't strong enough to stay outside of the problematic input voltage range and external ≤ 8kΩ resistors to 3.3V aren't acceptable unless you don't care about power consumption and your signal is still usable like that. It's a really annoying problem to have. I'm still waiting for a hardware revision that fixes the source of the problem instead of nasty workarounds.