RP2350 GPIO Pull-down Latching Bug

I just saw this bug while searching the web. I haven't been able to get a Pico 2 so I bought a Seeed Xiao RP2350 board which I just received yesterday. Maybe it's a good thing that these boards have not been more available...

Here is the errata excerpt from the rp2350 datasheet

At least this bug is documented. I haven't powered my board yet so I have not had a chance to encounter the problem.

Here is a link to a post on Hackster - Hardware Bug in RP2350 leads to unexpected pull-down behavior.

Parents

scottiebabe over 1 year ago

The RP2350 datasheet was updated today with an improved description of the IO pin errata
Cancel
Vote Up +3 Vote Down

Sign in to reply

Cancel

Reply

scottiebabe over 1 year ago

The RP2350 datasheet was updated today with an improved description of the IO pin errata
Cancel
Vote Up +3 Vote Down

Sign in to reply

Cancel

Children

michaelkellett over 1 year ago in reply to scottiebabe

It would be interesting to know how that changes with temperature - parasitic and accidental effects are often badly behaved.

MK
Cancel
Vote Up +2 Vote Down

Sign in to reply

Cancel
phoenixcomm over 1 year ago in reply to michaelkellett

michaelkellett Give one to the gods! hook it up and toss it in the fire!! or if you must on top of the stove. ~~ Cris
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
michaelkellett over 1 year ago in reply to phoenixcomm

I think we might be saying the same thing but in different words.

My point is that if you have a duff IO circuit then drawing a graph of it in an Errata sheet in one set of circumstances is not fixing it. So unless the Pi people can put limits on their graph over the working range of the device it doesn't really add a whole lot.

MK
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel