Factory Lead Time  

7 Weeks

Contact Plating  

Tin

Mount  

Surface Mount

Mounting Type  

Surface Mount

Package / Case  

44-VFQFN Exposed Pad

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  

1997

JESD-609 Code  

e3

Pbfree Code  

yes

Part Status  

Active

Moisture Sensitivity Level (MSL)  

3 (168 Hours)

Number of Terminations  

44

Additional Feature  

ALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ

Terminal Position  

QUAD

Peak Reflow Temperature (Cel)  

260

Supply Voltage  

5V

Terminal Pitch  

0.5mm

Frequency  

20MHz

Time@Peak Reflow Temperature-Max (s)  

40

Base Part Number  

ATMEGA644

Supply Voltage-Max (Vsup)  

5.5V

Supply Voltage-Min (Vsup)  

4.5V

Interface  

2-Wire, I2C, SPI, UART, USART

Memory Size  

64kB

Oscillator Type  

Internal

RAM Size  

4K x 8

Voltage - Supply (Vcc/Vdd)  

2.7V~5.5V

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

Access Time  

20 μs

Has ADC  

YES

DMA Channels  

NO

Data Bus Width  

8b

PWM Channels  

YES

DAC Channels  

NO

Number of Timers/Counters  

3

EEPROM Size  

2K x 8

Length  

7mm

Height Seated (Max)  

1mm

REACH SVHC  

No SVHC

Radiation Hardening  

No

RoHS Status  

ROHS3 Compliant

Lead Free  

Lead Free