AT87C51RD2 - ATMEL Corporation

AT87C51RD2 (AT8xC51Rx2) High Performance 8-bit Microcontroller

Atmel TS8xC51Rx2 is a high performance CMOS ROM, OTP, EPROM and ROMless versions of the 80C51 CMOS single chip 8-bit microcontroller. The TS8xC51Rx2 retains all features of the 80C51 with extended ROM/EPROM capacity (16/32/64 Kbytes), 256 bytes of internal RAM, a 7-source , 4-level interrupt system, an on-chip oscilator and three timer/counters. In addition,.

Features

• 80C52 Compatible
  – 8051 pin and instruction compatible
  – Four 8-bit I/O ports
  – Three 16-bit timer/counters
  – 256 bytes scratchpad RAM High-Speed Architecture
  – 40 MHz @ 5V, 30MHz @ 3V
  – X2 Speed Improvement capability (6 clocks/machine cycle)
  – 30 MHz @ 5V, 20 MHz @ 3V (Equivalent to
  – 60 MHz @ 5V, 40 MHz @ 3V) Dual Data Pointer On-chip ROM/EPROM (16K-bytes, 32K-bytes, 64K-bytes) On-chip eXpanded RAM (XRAM) (256 or 768 bytes) Programmable Clock Out and Up/Down Timer/Counter 2 Programmable Counter Array with
  – High Speed Output,
  – Compare / Capture,
  – Pulse Width Modulator,
  – Watchdog Timer .