HiLetgo 3pcs Pro Mini ATmega328P 3.3V 8M Module Board with Crystal Oscillator Compatible Arduino Pro Mini Replace ATmega128

Specifications: Main Chip: Atmega328P-AU. The 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. Size: 33mm*18mm*6mm. 14 digital input / output port: RX, TX, D2D13. 8 analog input ports: A0A7. 1 pair TTL level serial transceiver port: RX / TX. 6 PWM ports: D3, D5, D6, D9, D10, D11. Note: *** Pro mini modules have a lower max current draw than the bigger UNOs and MEGAs, so do not run too many things off of VCC. Package included: 3* HiLetgo Pro Mini ATMEGA328P 3. 3V 8MHz Module.