1. Operating Voltage (logic level): 5V
With USB cable and Soldered Connector
2. 8 analog inputs ports: A0 ~ A7
3. 14 Digital input / output ports: TX, RX, D2 ~ D13
4.1 pair of TTL level serial transceiver ports RX / TX
5. Using Atmel Atmega328P-AU MCU
6. There is a bootloader installed in it
Standard 0.1” spacing DIP (breadboard friendly).
7. Manual reset switch.
Nano Board R3 CH340 chip With USB Mini Cable compatible with Arduino (soldered)
The Nano equips a low-cost USB-Serial Chip that makes it less in price than Nano with FTDI USB-Serial Chip used on older versions of Nano.
The Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Nano R3). It has more or less the same functionality of the Uno but in a different package. It lacks only a DC power jack and works with a Mini-B USB cable instead of a standard one.