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AT89C55WD
  • AT89C55WD
  • AT89C55WD
  • AT89C55WD

AT89C55WD

In Production

Low-power, high-performance CMOS 8-bit microcontroller with 20KB of flash programmable ROM and 256 bytes of RAM. The device is manufactured using Microchip high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pinout. On-chip flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer. This versatile 8-bit CPU with flash is a highly flexible and cost-effective solution for many embedded control applications....

Microchip Technology AT89C55WD Product Info

16 April 2026 1

Parameters

Program Memory Size (KB)

20

RAM

0

Data EEPROM (bytes)

0

Pin Count

44

Operation Voltage Max.(V)

6

Operation Voltage Min.(V)

4

ADC Resolution Max

0

ADC Channels

0

Zero Cross Detect

False

Number of Comparators

0

SPI

0

I2C

0

Stand alone PWM

0

Low Power

No

Numerically Controlled Oscillator (NCO)

0

Data Signal Modulator (DSM)

0

Description

Low-power, high-performance CMOS 8-bit microcontroller with 20KB of flash programmable ROM and 256 bytes of RAM. The device is manufactured using Microchip high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pinout. On-chip flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer.

This versatile 8-bit CPU with flash is a highly flexible and cost-effective solution for many embedded control applications.

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