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ATMEGA644P-20MQ The ATMEGA644P-20MQ is an 8-bit AVR microcontroller from Microchip Technology with 64KB flash memory, 4KB SRAM, and operates at up to 20MHz. It is housed in a 44-VQFN package.
Mfr Part #:

ATMEGA644P-20MQ

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The ATMEGA644P-20MQ is an 8-bit AVR microcontroller from Microchip Technology with 64KB flash memory, 4KB SRAM, and operates at up to 20MHz. It is housed in a 44-VQFN package.
✓ Total Stock: 21,512 pcs

ATMEGA644P-20MQ Available from 1 distributor

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Smaxon Electronics ✓
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21,512 pcs
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21512 pcs On Request 1 On Request On Request 2020+ On Request On Request
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ATMEGA644P-20MQ 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
Voltage
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ATMEGA644P-20MQ Description

Short technical summary and product information.

The ATMEGA644P-20MQ is an 8-bit AVR microcontroller from Microchip Technology based on the enhanced RISC architecture. It features 64KB of self-programmable flash memory, 4KB internal SRAM, and 2KB EEPROM for data storage. The device operates at up to 20 MHz, achieving 20 MIPS throughput.

 

Peripherals include an 8-channel 10-bit ADC, two 8-bit and one 16-bit timer/counters, six PWM channels, and a real-time counter. Connectivity is provided via I2C, SPI, and two USART interfaces. The microcontroller also includes brown-out detection, power-on reset, and a watchdog timer.

 

The device is designed for surface-mount assembly and is available in a 44-VFQFN exposed pad package (44-VQFN, 7x7 mm). It operates over a supply voltage range of 2.7V to 5.5V and a temperature range of -40°C to 105°C, making it suitable for industrial and automotive environments.

ATMEGA644P-20MQ Quick Information

Product Type: Microcontroller
Series: ATmega644P
Canonical Name: ATMEGA644P-20MQ Microchip Technology Microcontroller
Subcategory: 8-bit Microcontroller

ATMEGA644P-20MQ Compliance

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

ATMEGA644P-20MQ Features

  • 8-bit AVR RISC architecture.
  • 64KB self-programmable flash memory.
  • 4KB internal SRAM and 2KB EEPROM.
  • 20MHz maximum operating frequency.
  • 32 general-purpose I/O lines.

ATMEGA644P-20MQ Applications

  • Industrial control and automation systems.
  • Embedded sensor data acquisition.
  • Motor control with PWM outputs.
  • Communication interfaces for I2C/SPI/UART.
  • Battery-powered devices due to low power.

ATMEGA644P-20MQ FAQs

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

2.7V to 5.5V.

What package is the ATMEGA644P-20MQ available in?

44-VFQFN Exposed Pad (44-VQFN 7x7).

What is the operating temperature range?

-40°C to 105°C.

Is the ATMEGA644P-20MQ RoHS compliant?

RoHS3 Compliant (unverified, low confidence).

What is the program memory size?

64KB Flash.

What is the maximum clock speed?

20 MHz.

What interfaces are available?

I2C, SPI, UART/USART.

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