The ATOM X1 is the world's smallest 32-bit arduino and breadboard compatible microcontroller measuring 14.9x14.9mm and weighing 0.95 grams. 256KB ROM, 32KB RAM, 48MHz clock, arduino zero bootloader. 8x I/O pins including 8x PWM, 6x ADC (Analog), Serial and I2C, 8x Digital. The ATOM X1 can be powered by either the Micro USB port, 3.3v to 20v input pin (regulated to 3.3v with a 3.3v output pin), or directly to the 3.3v pin.
