SunFounder Nano Microcontroller V4.0 for Arduino

Description Small, complete, and breadboard-friendly board based on the ATmega328 Lacks only a DC power jack Works with a Mini-B USB cable instead of a standard one Same functionality of the Arduino Duemilanove, but in a different package View more Dimensions 0.73" x 1.70" Length: 45 mm Width: 18 mm Weigth:5 g Specifications Microcontroller: Atmel ATmega168 or ATmega328 Operating Voltage (logic level): 5 V Input Voltage (recommended): 7-12 V Input Voltage (limits): 6-20 V Digital I/O Pins: 14 (of which 6 provide PWM output) Analog Input Pins: 8 DC Current per I/O Pin: 40 mA Flash Memory: 16 KB (ATmega168) or 32 KB (ATmega328) of which 2 KB used by bootloader SRAM : 1 KB (ATmega168) or 2 KB (ATmega328) EEPROM: 512 bytes (ATmega168) or 1 KB (ATmega328) Clock Speed: 16 MHz