Electronics > Microcontrollers

Misterious microcontroller in mini-keyboard

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t4rmo:
I need some help identifying the chip in the picture:
The anthena bluetooth presence and the location of the oscillator can give clues, but it doesn't match with microcontrollers that I know


selcuk:
Looks like BK3432. You can check the connections with a multimeter to be sure.

https://www.semiee.com/file/BEKEN/BEKEN-BK3432.pdf

t4rmo:
The pin 17 is XTAL32K in BK3432. In the chip of the picture does not seem to be XTAL32K

amyk:
JieLi AC6321A, AC6956C, and AC7006F have the osc and RF in the right places.

t4rmo:
At first glance, I think the AC6321A has a pretty good chance of being: How did you find it? I tried searching in electronics stores using the filters in their search engine but couldn't find anything.

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