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AT89C51 - 8-Bit Microcontroller

General Description

The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable read only memory (PEROM).

Key Features

  • Compatible with MCS-51™ Products.
  • 4K Bytes of In-System Reprogrammable Flash Memory.
  • Endurance: 1,000 Write/Erase Cycles.
  • Fully Static Operation: 0 Hz to 24 MHz.
  • Three-level Program Memory Lock.
  • 128 x 8-bit Internal RAM.
  • 32 Programmable I/O Lines.
  • Two 16-bit Timer/Counters.
  • Six Interrupt Sources.
  • Programmable Serial Channel.
  • Low-power Idle and Power-down Modes.

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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 • Compatible with MCS-51™ Products • 4K Bytes of In-System Reprogrammable Flash Memory – Endurance: 1,000 Write/Erase Cycles • Fully Static Operation: 0 Hz to 24 MHz • Three-level Program Memory Lock • 128 x 8-bit Internal RAM • 32 Programmable I/O Lines • Two 16-bit Timer/Counters • Six Interrupt Sources • Programmable Serial Channel • Low-power Idle and Power-down Modes Description The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable read only memory (PEROM). The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout.