Zmarthumb - Pack of 3 Redesign Replacement for Pro Mini ATMEGA328P 3.3V 8MHz Replace ATmega128 Module Development Board Microcontroller Compatible with Arduino PRO Module

Specifications:Main Chip: Replacement for 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, 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. 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 x Redesign Replacement for Pro Mini ATMEGA328P 3.3V 8MHz Module