The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328/168 .. It lacks only a DC power jack, and works with a Mini-B/Micro USB cable instead of a standard one. The Nano was designed by Gravitech./RobetOyn
|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||32 KB (ATmega328) of which 2 KB used by bootloader|
|SRAM||2 KB (ATmega328)|
|E||1 KB (ATmega328)|
|Clock Speed||16 MHz|
|Dimensions||0.73″ x 1.70″|
The Arduino Nano can be powered via the Mini-B/Micro USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.
The ATmega328has 32 KB of flash memory for storing code (of which 2 KB is used for the bootloader). The ATmega328 has 2 KB of SRAM and 1 KB of EEPROM (which can be read and written with the EEPROM library).