P80C652 CMOS single-chip 8-bit microcontrollers

P80C652 CMOS single-chip 8-bit microcontrollers

The P80C652/83C652 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 80C652/83C652 has the same instruction set as the 80C51. Three versions of the derivative exist: 83C652 — 8k bytes mask programmable ROM 80C65.

Features

P1.5 6 SCL/P1.6 7 SDA/P1.7 8 RST 9 RxD/P3.0 10 TxD/P3.1 11 INT0/P3.2 12 INT1/P3.3 13 T0/P3.4 14 T1/P3.5 15 WR/P3.6 16 RD/P3.7 17 XTAL2 18 XTAL1 19 VSS 20
• 80C51 central processing unit
• 8k × 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: 1.2 to 24 MHz
• Three operating ambient temper.