The Last Psion | Alex

"A Surprise Hardware Bug in Raspberry Pi's RP2350 Leads to Unexpected Pull-Down Behavior"

"That issue ... affects all GPIO pins: when configured as an input that uses the internal pull-down resistor and with the output buffer disabled, a GPIO pin will latch at between 2.1-2.2V rather than be pulled back to ground — but only after its first use."

#RaspberryPiPico #RP2350 #RaspberryPiPico2 #PiPico #PiPico2

https://www.hackster.io/news/a-surprise-hardware-bug-in-raspberry-pi-s-rp2350-leads-to-unexpected-pull-down-behavior-76b51ec22ede.amp

A Surprise Hardware Bug in Raspberry Pi's RP2350 Leads to Unexpected Pull-Down Behavior

Errata includes a warning of "latching" GPIO pins when using the internal pull-down resistors, thanks to a faulty fault-tolerant pad.

Hackster.io
Aug 29, 2024 at 5:38amWeb
Show threadkianryan ☑️🐙🏳️‍🌈Aug 29, 2024
@thelastpsion
That's *quite* a bug.
Show threadThe Last Psion | AlexAug 29, 2024
@kianryan Yeah, that's what I thought too. Not sure how badly that would affect the PsiDrive - I'm already using external pull-downs as a precaution, so I think it'll be OK.