Electronics > Repair
Can't locate/ID.this chip for the life of me. Anyone care to take a crack at it?
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FloridaCaveDiver:
I have spent hours trying to ID and locate this chip. I need to replace one to complete a repair.

I have attached a photo... any help would be VERY appreciated.  There are two of them located on the back of a Keychron V8D2 keyboard mainboard.

I believe it is 22C31WB0c e3

Thank you in advance for any help!

amyk:
If you can figure out the pinout, that would help narrow it down as I suspect it's an MCU but there are tons of them in QFN40.
fzabkar:

--- Quote from: amyk on August 19, 2024, 02:19:46 am ---If you can figure out the pinout, that would help narrow it down as I suspect it's an MCU but there are tons of them in QFN40.

--- End quote ---

I can't think why one would need two identical (?) MCUs on a keyboard? Am I living in the Dark Ages? :-?
darkspr1te:
Are there any other chips ? these could be identical MCU's , one is the io keyboard sense side the other could hand the USB side &/or rgb. i would make sense if you already have a build environment and ran out of IO on one chip and didnt want to use a IO expander,
Now if you have maybe 3 chips on the pcb then one could be the actual MCU and the other could be IO expanders. these are just my guess though, 


darkspr1te

gamalot:
Looks like a customized EFR32BG22 series MCU.
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