Power via USB or External Source - 5v or 7-35v (automatic selection), On-board 500ma 5V Regulator, Built-in USB (and serial debugging).
6 I/O Pins (2 are used for USB only if your program actively communicates over USB, otherwise you can use all 6 even if you are programming via USB).
8k Flash Memory (about 6k after bootloader).
I2C and SPI (vis USI). Size: 1.8cm x 2.6cm .
PWM on 3 pins (more possible with Software PWM), ADC on 4 pins, Power LED and Test/Status LED (on Pin0).

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 2 inch
Height : 0.2 inch
Length : 3 inch

Item Weight: 0 ounce (View shipping rates and policies)
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ASIN : B00V3ORGBI