87C54 87C54-20 CHMOS SINGLE-CHIP 8-BIT MICROCONTRO.
AP87C54-20 - CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER WITH 16 KBYTES USER PROGRAMMABLE EPROM
AP87C54 - CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER WITH 16 KBYTES USER PROGRAMMABLE EPROM
