8-bit AVR microcontroller featuring 64KB FLASH memory and 4KB RAM. Operates at up to 20MHz with an internal oscillator. Supports I2C, SPI, and UART/USART interfaces, with 32 I/O pins. Includes 3 timers/counters and peripherals like Brown-out Detect, POR, PWM, and WDT. Packaged in a 44-TQFP surface mount format, operating from 1.8V to 5.5V, with a temperature range of -40°C to 85°C. RoHS compliant.
Frequency20MHz
PackageA
MountingSurface Mount
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Technical Specifications
Microchip ATMEGA644A-AUR technical specifications.
General
Package/Case
A
Core Architecture
AVR
Frequency
20MHz
Interface
I2C, SPI, UART, USART
Max Operating Temperature
85°C
Min Operating Temperature
-40°C
Max Supply Voltage
5.5V
Memory Size
64KB
Memory Type
FLASH,
Min Supply Voltage
1.8V
Mount
Surface Mount
Number of I/Os
32
Number of Timers/Counters
3
Oscillator Type
Internal
Packaging
Tape and Reel
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Radiation Hardening
No
RAM Size
4KB
RoHS Compliant
Yes
Series
AVR® ATmega
Compliance
RoHS
Compliant
Datasheet
Microchip ATMEGA644A-AUR Datasheet
Download the complete datasheet for Microchip ATMEGA644A-AUR to view detailed technical specifications.
This datasheet cannot be embedded due to technical restrictions.
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