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ATmega644
  • ATmega644
  • ATmega644
  • ATmega644

ATmega644

In Production

Mature product; not recommended for new designs. Replaced by ATmega644PA.

Microchip Technology ATmega644 Product Info

16 April 2026 1

Parameters

Program Memory Size (KB)

64

RAM

4096

Data EEPROM (bytes)

2048

Pin Count

44

Operation Voltage Max.(V)

5.5

Operation Voltage Min.(V)

1.8

ADC Resolution Max

10

ADC Channels

8

Zero Cross Detect

False

Number of Comparators

1

SPI

3

I2C

1

Stand alone PWM

6

Low Power

No

Numerically Controlled Oscillator (NCO)

0

Data Signal Modulator (DSM)

0

Description

Mature product; not recommended for new designs. Replaced by ATmega644PA.

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