ATMEGA644A-AU - Microchip Technology

Manufacturer Part Number

ATMEGA644A-AU

Manufacturer

Microchip Technology

Introduction

The ATMEGA644A-AU is an 8-bit high-performance microcontroller from Microchip Technology's AVR® ATmega family, designed for embedded systems applications.

Product Features and Performance

Core Processor: AVR 8-Bit

Operating Speed: 20MHz

Program Memory Size: 64KB FLASH

EEPROM Size: 2KB

RAM Size: 4KB

I/O Pins: 32

Connectivity Options: I2C, SPI, UART/USART

Peripherals: Brown-out Detect/Reset, Power-on Reset, Pulse Width Modulation, Watchdog Timer

Analog to Digital Converters: 8 channels of 10-bit resolution

Internal Oscillator for system clock generation

Product Advantages

Optimized architecture for low-power consumption

Large number of I/O lines for versatile connectivity

Robust set of peripherals enhancing functionality

Broad range of operating voltage, catering to various power supplies

High integration reduces external component count

Available in an industrial temperature range

Key Technical Parameters

Core Size: 8-Bit

Speed: 20MHz

Program Memory: 64KB (32K x 16) FLASH

Data Converters: A/D 8x10b

Voltage Supply Range: 1.8V to 5.5V

Operating Temperature Range: -40°C to 85°C

Quality and Safety Features

Brown-out Detection to prevent incorrect operation at low voltages

Watchdog Timer for system recovery during erroneous operation

Compatibility

44-pin TQFP (10x10) packaging compatible with standard surface-mount PCB assembly

Compatible with AVR programming tools and software frameworks

Application Areas

Industrial control systems

Automotive electronics

Internet of Things (IoT) devices

Consumer electronics

DIY hobbyist projects and educational use

Product Lifecycle

Product Status: Active

No notification of discontinuation, ensuring long-term availability

Support for future replacements or upgrades within the AVR® ATmega series

Several Key Reasons to Choose This Product

Reliable performance through the versatile AVR core

Strong support and documentation from Microchip Technology

Integrated features reduce the need for additional circuitry and components

Scalable from prototyping to production volumes

Microchip's commitment to long-term availability and sustainability of its AVR® series