Factory Lead Time  

6 Weeks

Mount  

Surface Mount

Mounting Type  

Surface Mount

Package / Case  

44-TQFP

Number of Pins  

44

Data Converters  

A/D 8x10b

Number of I/Os  

32

Watchdog Timers  

Yes

Operating Temperature  

-40°C~85°C TA

Packaging  

Tray

Series  

AVR® ATmega

Published  

2006

JESD-609 Code  

e3

Pbfree Code  

yes

Part Status  

Active

Moisture Sensitivity Level (MSL)  

3 (168 Hours)

Number of Terminations  

44

Terminal Finish  

Matte Tin (Sn)

Voltage - Supply  

1.8V~5.5V

Terminal Position  

QUAD

Terminal Form  

GULL WING

Peak Reflow Temperature (Cel)  

260

Frequency  

20MHz

Time@Peak Reflow Temperature-Max (s)  

40

Base Part Number  

ATMEGA644PA

Power Supplies  

2/5V

Interface  

2-Wire, I2C, SPI, UART, USART

Memory Size  

64kB

Oscillator Type  

Internal

RAM Size  

4K x 8

uPs/uCs/Peripheral ICs Type  

MICROCONTROLLER, RISC

Core Processor  

AVR

Peripherals  

Brown-out Detect/Reset, POR, PWM, WDT

Program Memory Type  

FLASH

Core Size  

8-Bit

Program Memory Size  

64KB 32K x 16

Connectivity  

I2C, SPI, UART/USART

Bit Size  

8

Has ADC  

YES

DMA Channels  

NO

Data Bus Width  

8b

Number of Timers/Counters  

3

EEPROM Size  

2K x 8

Boundary Scan  

YES

Low Power Mode  

YES

Format  

FIXED-POINT

Integrated Cache  

NO

Number of ADC Channels  

8

Number of Serial I/Os  

2

Voltage - Supply (Max)  

5.5V

Number of External Interrupts  

3

Number of PWM Channels  

6

Number of I2C Channels  

1

Height  

1.05mm

Length  

10.1mm

Width  

10.1mm

REACH SVHC  

No SVHC

Radiation Hardening  

No

RoHS Status  

ROHS3 Compliant

Lead Free  

Lead Free