80C51 - NXP

80C51 8-bit microcontrolle

The Philips 80C51/87C51/80C52/87C52 is a high-performance static 80C51 design fabricated with Philips high-density CMOS technology with operation from 2.7 V to 5.5 V. The 8xC51 and 8xC52 contain a 128 × 8 RAM and 256 × 8 RAM respectively, 32 I/O lines, three 16-bit counter/timers, a six-source, four-priority level nested interrupt structure, a serial I/O por.

Features

• 8051 Central Processing Unit
  – 4k × 8 ROM (80C51)
  – 8k × 8 ROM (80C52)
  – 128 × 8 RAM (80C51)
  – 256 × 8 RAM (80C52)
  – Three 16-bit counter/timers
  – Boolean processor
  – Full static operation
  – Low voltage (2.7 V to 5.5 V@ 16 MHz) operation
• Memory addressing capability
  – 64k ROM and 64k RAM
• Power control modes:
  – Clock can be stopped and resumed
  – Idle mode
  – Power-down mode
• CMOS and TTL compatible
• TWO speed ranges at VCC = 5 V
  – 0 to 16 MHz
  – 0 to 33 MHz
• Three package styles
• Extended temperature ranges
• Dual Data Pointers
• Security bits:
  – ROM (2 bits)
  – OTP/EPROM (3 bits)
• Encr.