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ATMEGA644P-20AUR 8-bit AVR microcontroller from Atmel with 64KB Flash program memory, 4KB SRAM, and 2KB EEPROM. Operates at up to 20MHz and comes in a 44-TQFP surface mount package.
Mfr Part #:

ATMEGA644P-20AUR

Available from 1 distributors
Mfr Name: Atmel
Atmel
8-bit AVR microcontroller from Atmel with 64KB Flash program memory, 4KB SRAM, and 2KB EEPROM. Operates at up to 20MHz and comes in a 44-TQFP surface mount package.
✓ Total Stock: 12,053 pcs

ATMEGA644P-20AUR Available from 1 distributor

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12,053 pcs
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ATMEGA644P-20AUR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
Termination Style
Voltage
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ATMEGA644P-20AUR Description

Short technical summary and product information.

The ATmega644P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It achieves throughputs close to 1 MIPS per MHz, allowing designers to optimize for power consumption versus processing speed.

 

It features 64KB of in-system self-programmable Flash memory, 4KB SRAM, and 2KB EEPROM with high endurance (10,000 Flash write/erase cycles and 100,000 EEPROM cycles). Peripherals include two 8-bit timers, one 16-bit timer, six PWM channels, an 8-channel 10-bit ADC with differential gain, and serial interfaces (I2C, SPI, USART).

 

Operating from 2.7V to 5.5V and over -40°C to 85°C, the maximum clock frequency is 20MHz at 4.5V-5.5V and 10MHz at 2.7V-5.5V. The device is housed in a 44-TQFP (10x10mm) surface mount package with gull wing leads.

 

Typical applications include industrial control, automation, sensor interfaces, and battery-powered devices. JTAG interface supports on-chip debugging and programming.

ATMEGA644P-20AUR Quick Information

Product Type: Microcontroller
Series: ATmega644P
Canonical Name: Atmel ATmega644P 8-bit AVR Microcontroller with 64KB Flash, 44-TQFP
Subcategory: 8-bit AVR Microcontroller

ATMEGA644P-20AUR Compliance

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

ATMEGA644P-20AUR Features

  • 8-bit AVR core with up to 20 MIPS throughput.
  • 64KB Flash program memory with 10,000 write/erase cycles.
  • 4KB SRAM and 2KB EEPROM with 100,000 cycles.
  • Six PWM channels and 8-channel 10-bit ADC.
  • Operates from 2.7V to 5.5V supply.

ATMEGA644P-20AUR Applications

  • Used in industrial control and automation systems.
  • Suitable for battery-powered sensor nodes.
  • Ideal for motor control with PWM outputs.
  • Applied in data acquisition with built-in ADC.

ATMEGA644P-20AUR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ATMEGA644P-20AUR?

2.7V to 5.5V.

What package does the ATMEGA644P-20AUR come in?

44-TQFP (10x10mm) surface mount package.

What is the operating temperature range?

-40°C to 85°C.

Is the ATMEGA644P-20AUR RoHS compliant?

Yes, it is RoHS3 compliant.

What is the maximum clock speed?

20MHz at 4.5V-5.5V supply, 10MHz at 2.7V-5.5V.

How much Flash memory does it have?

64KB (32K x 16) Flash program memory.

What serial interfaces are supported?

I2C, SPI, and UART/USART.

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