Pro Mini atmega328 5V 16M Replace ATmega128 Compatible with Arduino Nano

Feature: Arduino?Pro Mini20 Digital input / output ports:TX, RX, D2 ~ D13, A0~A58 analog inputs ports:A0 ~ A71 pairs of TTL level serial transceiver ports RX / TX6 PWM ports: D3, D5, D6, D9, D10, D11Main ChipAtmel Atmega328P-AUSupport Serial DownloadSupport external power supply 3.8-12V DCSupport 12V or less than 12V battery power supply16MHz clock frequencySize: 33.8mm x 18mmNote:Color and more details are shown as picturesPLS NOTE that due to lighting effects, monitor's brightness/ contrass settings ect,there could be some slight differences in the color tone of the pictures and the actual item!Package Included:1 x Arduino?Pro Mini3 x Free pin