80C528

INTEGRATED CIRCUITS 80C528/83C528 CMOS single-chip 8-bit microcontroller Product specification IC20 Data Handbook 1995 Feb 02 Philips Semiconductors Philips Semiconductors Product specification CMOS single-chip 8-bit microcontrollers 80C528/83C528 DESCRIPTION The 8XC528 single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 8XC528 has the same instruction set as the 80C51. Three versions of the derivative exist: ROM multi-source, two-priority-level, nested interrupt structure, two serial interfaces (UART and I2C-bus), and on-chip oscillator and timing circuits. In addition, the 8XC528 has two software selectable modes of power reduction — idle mode and power-down mode. The idle mode freezes the CPU while allowing the RAM, timers, serial port, and interrupt system to continue functioning. The power-down mode saves the RAM contents but freezes the oscillator, causing all other chip functions to be inoperative. FEATURES 80C51 instruction set – 32k × 8 ROM (83C528) – ROMless (80C528) – 512 × 8 RAM – Memory addressing capability 64k ROM and 64k RAM – Three 16-bit counter/timers – On-chip watchdog timer with oscillator – Full duplex UART – I2C serial interface – Four 8-bit I/O ports 83C528 — 32k bytes mask programmable 80C528 — ROMless version of the 83C528 87C528 — 32k bytes EPROM (described in a separate data sheet) This device provides architectural enhancements that make it a...