Adafruit Pro Trinket 5V 16MHz

Key Features: ATmega328P onboad chip in QFN package 16MHz clock rate, 28K FLASH available USB bootloader with a nice LED indicator & headers for an FTDI port for reprogramming On-board 5.0V power regulator with 150mA output capability and ultra-low dropout, up to 16V input, reverse-polarity protection, thermal and current-limit protection. The Pro Trinket 5V combines everything you love about Trinket with the familiarity of the Arduino chip, the ATmega328. It's like an Arduino Pro Mini with more pins and USB tossed in. Sometimes you just need more pins, more FLASH, and more RAM. That's why the Pro Trinket has 18 GPIO, 2 extra analog inputs, 28K of flash, and 2K of RAM. It still has onboard USB bootloading support but with a MicroUSB jack this time. Optiboot support was added, so you can either program your Pro Trinket over USB or with a FTDI cable just like the Pro Mini. The Pro Trinket PCB packs much of the same capability as an Arduino UNO. So it's great if you want to make an Ar