Manufacturer Part Number
AT89C55WD-24AU
Manufacturer
Microchip Technology
Introduction
The AT89C55WD-24AU is an 8-bit microcontroller from Microchip Technology's 89C series with a wide range of features suitable for embedded applications.
Product Features and Performance
8-Bit 8051-Compatible Microcontroller
24MHz Maximum Operating Frequency
20KB of Reprogrammable Flash Memory
256 Bytes of RAM
32 Programmable I/O Lines
UART/USART Serial Communication
Watchdog Timer (WDT) for System Stability
Internal Oscillator
Product Advantages
Low Power Consumption
High Performance with 24MHz Speed
Large Program Memory for Complex Applications
Reliable Operation with Watchdog Timer
In-System Programmable Flash Memory
Key Technical Parameters
Core Processor: 8051
Core Size: 8-Bit
Speed: 24MHz
Connectivity: UART/USART
Peripherals: WDT
Number of I/O: 32
Program Memory Size: 20KB
RAM Size: 256 x 8
Voltage Supply: 4.5V to 5.5V
Operating Temperature Range: -40°C to 85°C
Mounting Type: Surface Mount
Package: 44-TQFP (10x10)
Quality and Safety Features
Extended Temperature Range for Reliability
Robust Package for Surface Mounting
Compatibility
Compatible with 8051 Microcontroller Peripherals and Extensions
Supports Standard UART/USART for Serial Communication
Application Areas
Industrial Control Systems
Automotive Electronics
Home Automation
Consumer Electronics
Telecommunication Systems
Product Lifecycle
Active Product Status (Not Nearing Discontinuation)
Availability of Replacements or Upgrades
Several Key Reasons to Choose This Product
High-speed operation at 24MHz improves system performance
Substantial 20KB Flash Memory supports complex applications without external components
Versatile 32 I/O lines allow for interfacing with a wide range of sensors and actuators
Highly reliable with safety features like Watchdog Timer alleviates risk of system hang-ups
Broad operating voltage range suitable for diverse environments and applications
Active product lifecycle ensures long-term availability and support
Simple programming and compatibility due to industry-standard 8051 core
Suitable for surface mount technology enabling compact and robust PCB designs
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