Description

Microcontroller: ATmega328
Operating voltage: 5 V or 3.3 V (Depends on the model.)
Supply voltage (recommended): 5-12 V (3.3 V model) or 7-12 V (5 V model)
Number of digital I/O pins: 14
Number of PWM pins: 6
Number of analogue input pins: 8
Max DC current for each I/O pins: 40 mA
Flash memory: 32 KB (ATmega328, 0.5 kB is used by bootloader)
SRAM: 2 KB (ATmega328)
EEPROM: 1kB (ATmega328)
Clock speed: 16 MHz (5 V model) or 8 MHz (3.3 V model)
Weight approx 5g
Size approx 18X33mm