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           Integrated Circuits (ICs) > Embedded Processors and Controllers > Microcontrollers > ATMEGA644A-PU

ATMEGA644A-PU

Part Number: ATMEGA644A-PU
Manufacturer: Microchip
Part Type: Integrated Circuits (ICs) > Embedded Processors and Controllers > Microcontrollers > ATMEGA644A-PU
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Description: AVR series Microcontroller IC 8-Bit 20MHz 64KB (32K x 16) FLASH 40-PDIP

04/24/2026 – There are 515 pieces pieces of Part Number ATMEGA644A-PU Available.

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AVR series Microcontroller IC 8-Bit 20MHz 64KB (32K x 16) FLASH 40-PDIP

Specifications

TYPE DESCRIPTION
Case/Package PDIP
Contact Plating Tin
Mount Through Hole
Number of Pins 40
Core Architecture AVR
Data Bus Width 8 b
Frequency 20 MHz
Interface I2C, SPI, UART, USART
Max Frequency 20 MHz
Max Operating Temperature 85 °C
Max Supply Voltage 5.5 V
Memory Size 64 kB
Memory Type FLASH
Min Operating Temperature -40 °C
Min Supply Voltage 1.8 V
Number of ADC Channels 8
Number of I2C Channels 1
Number of I/Os 32
Number of Programmable I/O 32
Number of PWM Channels 6
Number of SPI Channels 1
Number of Timers/Counters 3
Oscillator Type Internal
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
RAM Size 4 kB
Schedule B 8542310000
Watchdog Timer Yes
Height 4.445 mm
Length 52.58 mm
Width 13.97 mm

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