Servonia Nano 3.0 ATmega328 Micro-Controller Board Arduino Compatible Operating Voltage (logic level) 5 V Input Voltage (recommended) 7-12 V, Input Voltage (limits) 6-20 V Digital I/O Pins 14 (8 Analog pins, 6 PWM output pins) Flash Memory 32 KB (2KB used by bootloader) SRAM 2 KB, EEPROM 1 KB, Clock Speed 16 MHz