5 Pcs 3.3V 8MHz ATmega328P-AU Pro Mini Microcontroller Board For ArduinoDescription:The Pro Mini is a microcontroller board based on the ATmega328 for Arduino. With 14 digital input / output pins (of which 6 can be used as PWM outputs), 8 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. Six pin header can be connected to an FTDI cable to provide USB power and communication to the board.Feature: Supporting serial downloadSupporting external DC 2.4V ~ 12V powerSupporting 12V (or below) battery powerUsing ATmel Atmega328P-AU MCUThe bootloader is already installed in the board.Flash Memory: 32 KB of which 2 KB used by bootloader.8MHz clock frequency.USB connection off board.Supports auto-reset.Max 150mA output.Over current protected.Support external power supply 3.3V.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.Flash Memory: 32KB (of which 2KB used by bootloader)SRAM: 1KBEEPROM: 512bytesClock Speed: 8MHzSize: 33.3 x 17.6mmPackage included:3pcs* Redesign Pro Mini ATMEGA328P 3.3V 8MHz Module