S87C654-4A44

80C51 8Bit microcontroller 8K/16K, 256 OTP, I2C

DESCRIPTION

The 87C654 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 87C654 has the same instruction set as the 80C51. Two versions of the derivative exist:

83C654—16k bytes mask programmable ROM

87C654—EPROM version

FEATURES

•80C51 central processing unit

•16k ×8 EPROM 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

•Five package styles

•Extended temperature range

•OTP package available

•Two speed ranges

–16MHz

–20MHz