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AT89C51RB2 - 8-bit Microcontroller

Description

The AT89C51RB2/RC2 is a high-performance Flash version of the 80C51 8-bit microcontrollers.

It contains a 16K or 32K Bytes Flash memory block for program and data.

The Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software.

Features

  • 80C52 Compatible.
  • 8051 Pin and Instruction Compatible.
  • Four 8-bit I/O Ports.
  • Three 16-bit Timer/Counters.
  • 256 Bytes Scratch Pad RAM.
  • 9 Interrupt Sources with 4 Priority Levels.
  • Dual Data Pointer.
  • Variable Length MOVX for Slow RAM/Peripherals.
  • ISP (In-system Programming) Using Standard VCC Power Supply.
  • Boot ROM Contains Low Level Flash Programming Routines and a Default Serial Loader.
  • High-speed A.

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Datasheet preview – AT89C51RB2

Datasheet Details

Part number AT89C51RB2
Manufacturer ATMEL Corporation
File Size 785.14 KB
Description 8-bit Microcontroller
Datasheet download datasheet AT89C51RB2 Datasheet
Additional preview pages of the AT89C51RB2 datasheet.

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Full PDF Text Transcription

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Features • 80C52 Compatible – 8051 Pin and Instruction Compatible – Four 8-bit I/O Ports – Three 16-bit Timer/Counters – 256 Bytes Scratch Pad RAM – 9 Interrupt Sources with 4 Priority Levels – Dual Data Pointer • Variable Length MOVX for Slow RAM/Peripherals • ISP (In-system Programming) Using Standard VCC Power Supply • Boot ROM Contains Low Level Flash Programming Routines and a Default Serial Loader • High-speed Architecture – In Standard Mode: 40 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution) 60 MHz (Vcc 4.5V to 5.5V and Internal Code execution only) – In X2 mode (6 Clocks/machine cycle) 20 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution) 30 MHz (Vcc 4.5V to 5.
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