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

Product Dimensions

Package Dimensions
Width : 2.5 inch
Height : 0.38 inch
Length : 3.5 inch

Item Weight: 0.16 ounce (View shipping rates and policies)
Shipping Weight: 0.16 ounce (View shipping rates and policies)

ASIN : B01MZ6ZE7U