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ATMEGA644PA-AU Microchip ATmega644PA-AU is an 8-bit AVR microcontroller with 64KB Flash, 4KB SRAM, and 2KB EEPROM. It operates at up to 20MHz and comes in a 44-TQFP package.
Mfr Part #:

ATMEGA644PA-AU

Available from 4 distributors
Mfr Name: Microchip Technology
Microchip Technology
Microchip ATmega644PA-AU is an 8-bit AVR microcontroller with 64KB Flash, 4KB SRAM, and 2KB EEPROM. It operates at up to 20MHz and comes in a 44-TQFP package.
✓ Total Stock: 71,764 pcs

ATMEGA644PA-AU Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
60,000 pcs
On Request
60000 pcs On Request 1 On Request On Request 18+ On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
4,000 pcs
On Request
4000 pcs On Request 1 On Request On Request 21+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
2,764 pcs
On Request
2764 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

ATMEGA644PA-AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
SVHC Present
Speed
Supplier Device Package
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Voltage
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ATMEGA644PA-AU Description

Short technical summary and product information.

The ATmega644PA-AU is a low-power, 8-bit AVR microcontroller from Microchip Technology, based on the AVR enhanced RISC architecture. It comes in a 44-pin TQFP package with surface mount mounting, operating over a temperature range of -40°C to +85°C.

 

This device features 64KB of in-system self-programmable flash memory, 4KB SRAM, and 2KB EEPROM. It supports clock frequencies up to 20MHz at 4.5-5.5V, 10MHz at 2.7-5.5V, and 4MHz at 1.8-5.5V, achieving up to 20MIPS throughput.

 

For peripheral integration, the microcontroller provides 32 I/O lines, an 8-channel 10-bit ADC, PWM channels, and connectivity interfaces including I2C, SPI, and UART/USART. Additional features include brown-out detection, power-on reset, and watchdog timer.

 

The supply voltage range of 1.8V to 5.5V supports flexible system power designs, and the industrial temperature range makes it suitable for demanding embedded applications such as industrial control, automation, and sensor interfacing.

ATMEGA644PA-AU Quick Information

Product Type: Microcontroller
Series: ATmega644A/PA
Canonical Name: 8-bit AVR Microcontroller with 64KB Flash and 44-TQFP Package
Subcategory: MCU

ATMEGA644PA-AU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

ATMEGA644PA-AU Features

  • 8-bit AVR core with 20MIPS throughput.
  • 64KB flash, 4KB SRAM, 2KB EEPROM.
  • Supply voltage range of 1.8V to 5.5V.
  • Operates from -40°C to +85°C.
  • I2C, SPI, and USART serial interfaces.

ATMEGA644PA-AU Applications

  • Suitable for industrial automation control.
  • Used in embedded sensor monitoring systems.
  • Enables motor control with PWM outputs.
  • Ideal for serial communication gateways.

ATMEGA644PA-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range?

The supply voltage range is 1.8V to 5.5V.

What is the package type?

The package is a 44-TQFP (10x10mm) surface mount device.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

Is this component RoHS compliant?

The product is listed as RoHS3 compliant.

What is the maximum clock frequency?

The maximum clock frequency is 20MHz at 4.5V-5.5V, 10MHz at 2.7V-5.5V, and 4MHz at 1.8V-5.5V.

What serial communication interfaces are supported?

The microcontroller supports I2C, SPI, and UART/USART.

How many I/O lines and ADC channels are there?

It has 32 I/O lines and a 10-bit ADC with 8 channels.

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