Download the EN8xC196KC20 datasheet PDF.
This datasheet also includes the EN87C196KC20 variant, as both parts are published together in a single manufacturer document.
www.DataSheet4U.com 8XC196KC/8XC196KC20 COMMERCIAL/EXPRESS CHMOS MICROCONTROLLER
87C196KC-16 Kbytes of On-Chip OTPROM 83C196KC-16 Kbytes ROM 80C196KC-ROMless Y Dynamically Configurable 8-Bit or 16.