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DESCRIPTION

The P83C654 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family.

FEATURES

? 80C51 central processing unit

? 16k × 8 ROM expandable externally to 64k bytes

? 256 × 8 RAM, expandable externally to 64k bytes

? Two standard 16-bit timer/counters

? Four 8-bit I/O ports

? I2C-bus serial I/O port with byte oriented master and slave functions

? Full-duplex UART facilities

? Power control modes

– Idle mode

– Power-down mode

? ROM code protection

? Extended frequency range: 3.5 to 24 MHz

? Three operating ambient temperature ranges:

0 to +70°C

–40 to +85°C

–40 to +125°C