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AT89C55WD Datasheet 8-bit Microcontroller

Manufacturer: Atmel (now Microchip Technology)

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The AT89C55WD is a low-power, high-performance CMOS 8-bit microcontroller with 20K bytes of Flash programmable read only memory and 256 bytes of RAM.

The device is manufactured using Atmel’s high-density nonvolatile memory technology and is patible with the industry standard 80C51 and 80C52 instruction set and pinout.

The on-chip Flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer.

Key Features

  • Compatible with MCS®-51 Products.
  • 20K Bytes of Reprogrammable Flash Memory.
  • Endurance: 10,000 Write/Erase Cycles.
  • 4V to 5.5V Operating Range.
  • Fully Static Operation: 0 Hz to 33 MHz.
  • Three-level Program Memory Lock.
  • 256 x 8-bit Internal RAM.
  • 32 Programmable I/O Lines.
  • Three 16-bit Timer/Counters.
  • Eight Interrupt Sources.
  • Programmable Serial Channel.
  • Low-power Idle and Power-down Modes.

More Datasheets from Atmel (now Microchip Technology)

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AT89C55WD Distributor