GENERAL DESCRIPTION
The ISSI IS80C52 and IS80C32 are high-performance microcontrollers fabricated using high-density CMOS technology. The CMOS IS80C52/32 is functionally compatible with the industry standard 8052/32 microcontrollers.

FEATURES
• 80C51 based architecture
• 8K x 8 ROM (IS80C52 only)
• 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
    – Encrypted verify (32 bytes)
    – 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
• Industrial temperature available
• Packages available:
    – 40-pin DIP
    – 44-pin PLCC
    – 44-pin PQFP