AT89C55WD-24PI - Microchip Technology

Manufacturer Part Number

AT89C55WD-24PI

Manufacturer

Microchip Technology

Introduction

The AT89C55WD-24PI is an 8-bit microcontroller from Microchip Technology's 89C series designed for embedded applications.

Product Features and Performance

High-performance 8051-compatible CPU operating at 24MHz

32 programmable I/O lines for versatile interfacing

20KB of reprogrammable Flash memory

256 bytes of RAM for variable storage

Integrated Watchdog Timer (WDT) for system reliability

UART/USART serial communication for peripheral connectivity

Internal oscillator for reduced component count

Product Advantages

A mature and well-understood 8051 core processor for wide hardware and software ecosystem support

Reprogrammable Flash allows for in-system updates and code modifications

Adequate speed and memory capacity for complex tasks and control operations

Through Hole mounting for easy prototyping and repairs

Key Technical Parameters

Core Size: 8-Bit

Speed: 24MHz

Number of I/O: 32

Program Memory Size: 20KB

RAM Size: 256 x 8

Voltage Supply (Vcc/Vdd): 4.5V ~ 5.5V

Operating Temperature: -40°C ~ 85°C (TA)

Mounting Type: Through Hole

Supply Device Package: 40-PDIP

Quality and Safety Features

Watchdog Timer to prevent system hang-ups

Extended operating temperature range ensuring reliability in extreme conditions

Compatibility

Compatible with various 8051 development and debugging tools

Works with a wide range of supply voltages and standard DIP socket interfaces

Application Areas

Industrial automation and control

Automotive systems

Consumer electronics

Embedded system applications

Product Lifecycle

Obsolete Product – The product is categorized as obsolete, and users must consider future availability constraints.

Potential for replacement or upgrades with newer, equivalent products from the same manufacturer or alternative sources

Several Key Reasons to Choose This Product

Proven reliability and widespread acceptance of 8051 architecture

Sufficient memory and speed for a wide variety of applications

Ease of prototype development with Through Hole package

Capability to operate safely across a large temperature range

Availability of resources due to its conventional technology base