Pro Mini Atmega328P 5V/16MHz 3.3V/8MHz Atmega328 3.3V 5V for Arduino Development Board

Technical parameters:

1.   20 digital input/output port RX and TX, D2 ~ D13, A0 ~ A5

2.   8 analog input port A0 ~ A7

3.   1 to the TTL level a serial port to send and receive port RX/TX

4.   6 a PWM port, D3, D5, D6, D9, D10, D11

5.   Using Atmel Atmega328P - AU microcontroller

6.   Support serial download

7.   Support external 5 V ~ 12 V dc power supply

8.   Support the 12 v and the following batteries

9.   16 MHZ clock frequency

10.   Size: 33.3 * 18 (mm)