ARDUINO NANO V3 328P

Specification:

Microcontroller ATmega328
Operating Voltage (logic level): 5V
Input Voltage (recommended): 7V ~ 12V
Input Voltage (limits): 6V ~ 20 V
Digital I/O Pins: 14 (of which 6 provide PWM output)
Analog Input Pins: 8
DC Current per I/O Pin: 40mA
Flash Memory: 32KB (ATmega328) (of which 2 KB used by bootloader)
SRAM: 2KB (ATmega328)
EEPROM: 1KB (ATmega328)
Clock Speed: 16MHz
Chip: CH340C/G Random delivery (CH340B is the update version of CH340G, CH340B comes with crystal, but CH340G doesn't)

Note:

Improved USB chip for speed and stability using WIN7/WIN8. This version comes with the pin headers unsoldered and not included the USB cable.