MINI USB Nano V3.0 ATmega328P CH340G 5V 16M Micro-controller board for Arduino CH340G Replace FT232RL , Operating Voltage?logic level??5V, 8 analog inputs ports: A0 ~ A7. 14 Digital input / output ports: TX,RX,D2 ~ D13, 6 PWM ports: D3, D5, D6, D9, D10, D11 1 pairs of TTL level serial transceiver ports RX / TX Using Atmel Atmega328P-AU MCU , There is bootloader installed in it, Support ISP download Support USB download and Power, Support for external 5V ~ 12V DC power supply, Support power supply by 9V battery