DESCRIPTION

The Philips 8XC550 is a high-performance microcontroller fabricated with Philips high-density CMOS technology. This Philips CMOS technology combines the high speed and density characteristics of HMOS with the low power attributes of CMOS. Philips epitaxial substrate minimizes latch-up sensitivity. The CMOS 8XC550 has the same instruction set as the 80C51.

The 8XC550 contains a 4k × 8 EPROM (87C550)/ROM (83C550)/ROMless (80C550 has no program memory on-chip), a 128 × 8 RAM, 8 channels of 8-bit A/D, four 8-bit ports (port 1 is input only), a watchdog timer, two 16-bit counter/timers, a seven-source, two-priority level nested interrupt structure, a serial I/O port for either multi-processor communications, I/O expansion or full duplex UART, and an on-chip oscillator and clock circuits.

FEATURES

• 80C51 based architecture

   – 4k × 8 EPROM (87C550)/ROM (83C550)

   – 128 × 8 RAM

   – Eight channels of 8-bit A/D

   – Two 16-bit counter/timers

   – Watchdog timer

   – Full duplex serial channel

   – Boolean processor

• Memory addressing capability

   – 64k ROM and 64k RAM

• Power control modes:

   – Idle mode

   – Power-down mode

• CMOS and TTL compatible

• One speed range at VCC = 5V ±10%

   – 3.5 to 16MHz

• Extended temperature ranges

• OTP package available