ATSAMD21G18 @ 48MHz with 3.3V logic/power
256KB FLASH, 32KB SRAM, No EEPROM
3.3V regulator (AP2112K-3.3) with 600mA peak current output, WiFi can draw 300mA peak during xmit
USB native support, comes with USB bootloader and serial port debugging
You also get tons of pins - 20 GPIO pins

Technical Details

Product Details

Package Dimensions
Width : 2.3 inch
Height : 0.1 inch
Length : 3.1 inch

Shipping Weight: 0.8 ounce (View shipping rates and policies)

ASIN : B01D0Z801W