Category: Integrated Circuits (ICs)
                  Embedded
                  Microcontrollers
Mfr: Microchip Technology
Series: AVR® ATmega
Package: Tray
Product Status: Active
Core Processor: AVR
Core Size: 8-Bit
Speed: 20MHz
Connectivity: I²C, SPI, UART/USART
Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O: 32
Program Memory Size: 64KB (32K x 16)
Program Memory Type: FLASH
EEPROM Size: 2K x 8
RAM Size: 4K x 8
Voltage – Supply (Vcc/Vdd): 2.7V ~ 5.5V
Data Converters: A/D 8x10b
Oscillator Type: Internal
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount
Package / Case: 44-TQFP
Supplier Device Package: 44-TQFP (10×10)
Base Product Number: ATMEGA644