8-bit AVR microcontroller featuring 64KB FLASH memory and 4KB RAM. Operates at up to 20MHz with an 8-bit data bus width. Includes 32 I/O pins, 8 ADC channels, 6 PWM channels, and 3 timers/counters. Supports I2C and SPI communication protocols. Packaged in a 40-pin PDIP for through-hole mounting, with an operating temperature range of -40°C to 85°C and a supply voltage of 2.7V to 5.5V.
Frequency20MHz
PackagePDIP
MountingThrough Hole
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Technical Specifications
Microchip ATMEGA644-20PU technical specifications.
General
Access Time
20us
Package/Case
PDIP
Core Architecture
AVR
Data Bus Width
8b
Frequency
20MHz
Height
4.826mm
Lead Free
Lead Free
Length
52.58mm
Max Frequency
20MHz
Max Operating Temperature
85°C
Memory Size
64KB
Memory Type
FLASH,
Min Operating Temperature
-40°C
Max Supply Voltage
5.5V
Min Supply Voltage
2.7V
Mount
Through Hole
Number of ADC Channels
8
Number of I/Os
32
Number of I2C Channels
1
Number of PWM Channels
6
Number of SPI Channels
1
Number of Timers/Counters
3
Peripherals
POR, PWM, WDT
RAM Size
4KB
Reach SVHC Compliant
No
RoHS Compliant
Yes
Watchdog Timer
Yes
Width
13.97mm
Compliance
RoHS
Compliant
Datasheet
Microchip ATMEGA644-20PU Datasheet
Download the complete datasheet for Microchip ATMEGA644-20PU to view detailed technical specifications.
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