The NANO is a small and breadboard-friendly version of the Arduino Uno. The compatible use a original ATMEGA328 chip and is 100% compatible with the original Nano. The Arduino NANO 3 is based on the 32kB Atmega328P-AU with 16MHz and a USB-C port. The ATmega328 has 32 KB (2 KB used for the bootloader).

Quick Spec:

• Microcontroller: ATmega328
• USB Chipset: CH340
• USB Connector: USB Type-C
• Logic Level: 5V
• Input Voltage: 5 ~ 12V
• 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
• Dimensions: 44 x 18mm
• Net Weight: 30g