3.3V/8M Pro Mini Improved ATMEGA328P For Arduino Development Board

1. 14 digital input/output ports: RX, TX, D2-D13
2. 8 analog input ports: A0-A7
3. 1 pair of TTL level serial transceiver ports: RX/TX
4. 6 PWM ports: D3, D5, D6, D9, D10, D11
5. Clock frequency: 16MHz
6. Using Atmel Atmega328P-AU microcontroller
7. Support serial port download, support external 3.3V-12V DC power supply, support 9V battery power supply.
8. The professional version of Mini Pro is a microcontroller board which has 14 digital input/output pins (6 of which can be used as PWM outputs), 8 analog inputs, a 16MHz resonator, a reset button, and mounting holes pin header
9. Size: about 33.3 x 18 mm