TN87C54 Overview
87C54 87C54-20 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER WITH 16 KBYTES USER PROGRAMMABLE EPROM Automotive Y Extended Automotive Temperature Range ( b 40 C to a 125 C Ambient) High Performance CHMOS EPROM Three 16-Bit Timer Counters One-to-Three Level Program.