Catalog > Consumer Electronics > Kits > Smart Kits Pro Micro 328-5V/16MHz 328-5V/16MHz Pro Micro BMT PRO MICRO 5V/16MHZ ARDUINO COMPATIBLE PRO MICRO 328-5V/16MHZ. USING ATMEGA32U4 (BUILT IN USB PERIPHERAL) NOT LOWER COST ATMEGA328P Call for Price 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on-board and do away with bulky external USB interface. This tiny little board does all of the neat-o Arduino tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. NB. There is a voltage regulator on board so it can accept a voltage of upto an ABSOLUTE MAXIMUM of 12.00VDC, but only on the RAW pin and NOT on the VCC. The VCC is a 5V output. DO NOT SUPPLY 12V TO THIS PIN. (To be safe rather use a maximum of 9VDC to the RAW pin) Features ATMega 32U4 running at 5V/16MHzSupported under Arduino IDE v1.0.1 and upOn-Board micro-USB connector for programming4 x 10-bit ADC pins12 x Digital I/Os (5 are PWM capable)Rx and Tx Hardware Serial ConnectionsDimensions : 1.3 X 0.7mm