IC80C31

IC80C31 IC80C51 IC80C31 IC80C51 CMOS SINGLE CHIP 8-BIT MICROCONTROLLER FEATURES 80C51 based architecture 4K x 8 ROM (IC80C51 only) 128 x 8 RAM Two 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 Six 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 GENERAL DESCRIPTION The ICSI IC80C51 and IC80C31 are high-performance microcontroller fabricated using high-density CMOS technology. The CMOS IC80C51/31 is functionally compatible with the industry standard 80C51/31 microcontrollers. The IC80C51/31 is designed with 4K x 8 ROM (IC80C51 only); 128 x 8 RAM; 32 programmable I/O lines; a serial I/ O port for either multiprocessor communications, I/O expansion or full duplex UART; two 16-bit timer/counters; an six-source, two-priority-level, nested interrupt structure; and an on-chip oscillator and clock circuit. The IC80C51/31 can be expanded using standard TTL compatible memory. P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST RxD/P3.0 TxD/P3.1 INT0/P3.2 INT1/P3.3 T0/P3.4 T1/P3.5 WR/P3.6 RD/P3.7 XTAL2 XTAL1 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC P0...