iTead Arduino Nano v3.0 Micro-controller: Atmel ATmega328 Operating Voltage:5 V I/O Pins:14 Digital (of which 6 provide PWM output), 8 Analog DC Current per I/O Pin:40 mA Flash Memory - 32 KB (2 KB used by bootloader), SRAM - 2 KB, EEPROM - 1 KB, Clock Speed- 16 MHz