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89C51RE2 - AT89C51RE2

General Description

AT89C51RE2 is a high performance CMOS Flash version of the 80C51 CMOS single chip 8-bit microcontroller.

It contains a 128 Kbytes Flash memory block for program.

The 128 Kbytes Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software.

Key Features

  • 80C52 Compatible.
  • 8051 Instruction Compatible.
  • Four 8-bit I/O Ports (44 Pins Version).
  • Three 16-bit Timer/Counters.
  • 256 bytes Scratch Pad RAM.
  • 11 Interrupt Sources With 4 Priority Levels.
  • ISP (In-System Programming) Using Standard VCC Power Supply.
  • Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply.
  • Boot ROM Contains Serial Loader for In-System Programming.
  • High-speed Architecture.

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📁 Similar Datasheet

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89C51RC2 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM NXP
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Other Datasheets by Atmel (now Microchip Technology)

Part Number Description
89C51 8 Bit Microcontroller with 4 Kbytes Flash

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Features • 80C52 Compatible – 8051 Instruction Compatible – Four 8-bit I/O Ports (44 Pins Version) – Three 16-bit Timer/Counters – 256 bytes Scratch Pad RAM – 11 Interrupt Sources With 4 Priority Levels • ISP (In-System Programming) Using Standard VCC Power Supply • Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply • Boot ROM Contains Serial Loader for In-System Programming • 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.