Arduino Pro Mini Atmega328

Main Chip: Atmega328P-AU
14 digital input / output port: RX, TX, D2 ~~ D13
8 analog input ports: A0 ~ A7
1 pair TTL level serial transceiver port: RX / TX
6 PWM ports: D3, D5, D6, D9, D10, D11
16MHz clock frequency
The bootloader is already installed in the board