Specifications:

Mounting Style: SMD/SMT
Package/Case: TQFP-64
Core: AVR
Program Memory Size: 64 kB
Data Bus Width: 8 bit
ADC Resolution: 10 bit
Maximum Clock Frequency: 16 MHz
Number of I/Os: 53 I/O
Data RAM Size: 4 kB
Supply Voltage - Min: 2.7 V
Supply Voltage - Max: 5.5 V
Minimum Operating Temperature: - 40 C
Maximum Operating Temperature: 85 C
Packaging: Tray
Data RAM Type: SRAM
Data ROM Size: 2 kB
Data ROM Type: EEPROM
Height: 1 mm
Interface Type: SPI, USART
Length: 14 mm
Moisture Sensitive: Yes
Number of Timers/Counters: 4 Timer
Processor Series: megaAVR
Product Type: 8-bit Microcontrollers - MCU
Program Memory Type: Flash
Width: 14 mm
Unit Weight: 860 mg