See the attached PDF.
I have a deck controller that does not function from the switches.
Trouble shooting led me to this chip.

since it is old I don't think getting a replacement will be easy.

I was thinking is it possible for a PIC to do the job.
Somethng like a 16F88.

Thanks

 

Yes key control can be done with MCU,and these days all use MCU to do the job rather an ASIC.But one thing PIC16F88 is old, it cost much more than its functions so using any PIC18F range will good,or if you want to do it in very low price as its just a key control use ATMEL's AT range they are very low cost or Texas Instruments MSP range.

Good Luck

 

Thanks for the trouble.
One member had found me a piece.