83C851

Features:

• 80C51 based architecture
  4k * 8 ROM
  128 * 8 RAM
  Two 16-bit counter/timers
  Full duplex serial channel
  Boolean processor
• Non-volatile 256 * 8-bit EEPROM (electrically erasable programmable read only memory)
  On-chip voltage multiplier for erase/write
  10,000 erase/write cycles per byte
  10 years non-volatile data retention
  Infinite number of read cycles
  User selectable security mode
  Block erase capability
• Mask-programmable ROM code protection
• Memory addressing capability
  64k ROM and 64k RAM
• Power control modes:
  Idle mode
  Power-down mode
• CMOS and TTL compatible
• 1.2 to 16MHz or 3.5 to 24MHz
• Three package styles
• Three temperature ranges
• ROM code protection


Pinout




Specifications




Description

The Philips 80C851/83C851 is a high-performance microcontroller fabricated with Philips high-density CMOS technology. The 80C851/83C851 has the same instruction set as the 80C51. The Philips CMOS technology combines the high speed and density characteristics of HMOS with the low power attributes of CMOS. The Philips epitaxial substrate minimizes latch-up sensitivity.

The 80C851/83C851 contains a 4k × 8 ROM with mask-programmable ROM code protection, a 128 × 8 RAM, 256 × 8
EEPROM, 32 I/O lines, two 16-bit counter/timers, a seven-source, five vector, two-priority level nested interrupt  cture,
a serial I/O port for either multi-processor communications, I/O expansion or full duplex UART, and on-chip oscillator and clock circuits.