Adafruit Pro Trinket - 3V 12MHz<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>ATmega328P onboard chip in QFN package running at 3.3V logic 12MHz clock rate， 28K FLASH available</li><li>USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude and/or the Arduino IDE (with a few simple config modifications). Also has headers for an FTDI port for reprogramming</li><li>Micro-USB jack for power and/or USB uploading， you can put it in a box or tape it up and use any USB cable for when you want to reprogram. On-board 3.3V power regulator with 150mA output capability and ultra-low dropout. Up to 16V input， reverse-polarity protection， thermal and current-limit protection.</li><li>Power with either USB or external output (such as a battery) - it'll automatically switch over</li><li>On-board green power LED and red pin #13 LED Reset button for entering the bootloader or restarting the program.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51sK7-eixdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51xvbZ4ym0L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51qP5FgKS-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41i6ggqy43L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/511v54vtE3L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51z9PyLcqrL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51qOxU%2BsvUL.jpg" noproxy>