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AT89C51RE2 - 8-bit Flash Microcontroller

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.

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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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.

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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.
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