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