GENERAL DESCRIPTION
The ICSI IC80C54 and IC80C58 are high-performance microcontroller fabricated using high-density CMOS technology. The CMOS IC80C54/58 is functionally compatible with the industry standard 80C52/32 microcontrollers.

FEATURES
• 80C52 based architecture
• 16K x 8 ROM (80C54) 32K x 8 ROM (80C58)
• 256 x 8 RAM
• Three 16-bit Timer/Counters
• Full duplex serial channel
• Boolean processor
• Four 8-bit I/O ports, 32 I/O lines
• Memory addressing capability
    – 64K ROM and 64K RAM
• Program memory lock
    – Lock bits (2)
• Power save modes:
    – Idle and power-down
• Eight interrupt sources
• Most instructions execute in 0.3 µs
• CMOS and TTL compatible
• Maximum speed: 40 MHz @ Vcc = 5V
• Packages available:
    – 40-pin DIP
    – 44-pin PLCC
    – 44-pin PQFP