0
ATmega644PA
  • ATmega644PA
  • ATmega644PA
  • ATmega644PA

ATmega644PA

In Production

The high-performance Microchip 8-bit AVR® RISC-based picoPower® microcontroller combines 64 KB ISP Flash memory with read-while-write capabilities, 2 KB EEPROM, 4 KB SRAM, 32 general purpose I/O lines, 32 general purpose working registers, a real-time counter, three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface, an 8-channel 10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, a JTAG (IEEE® 1149.1 compliant) test interface for on-chip debugging and programming, and six software selectable power saving modes. The device operates between 1.8-5.5 volts. By executing powerful instructions in a single clock cycle, the dev...

Microchip Technology ATmega644PA Product Info

16 April 2026 0

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

Yes

Numerically Controlled Oscillator (NCO)

0

Data Signal Modulator (DSM)

0

Description

The high-performance Microchip 8-bit AVR® RISC-based picoPower® microcontroller combines 64 KB ISP Flash memory with read-while-write capabilities, 2 KB EEPROM, 4 KB SRAM, 32 general purpose I/O lines, 32 general purpose working registers, a real-time counter, three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface, an 8-channel 10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, a JTAG (IEEE® 1149.1 compliant) test interface for on-chip debugging and programming, and six software selectable power saving modes. The device operates between 1.8-5.5 volts.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching one MIPS per MHz, balancing power consumption and processing speed.

Subscribe to Welllinkchips !
Your Name
* Email
Submit a request