Does anybody know what this IC is?
Judging by the ceramic resonator and load capacitors connected to pins 15 and 16, it's almost surely a microcontroller with a custom program in OTP or flash memory. And typically the program memory is read-protected for the security of the manufacturer's firmware. 

So more than likely it's not the sort of thing you'll be able to buy from other sources than the original, such as a used board or repair part.