ASF3 is an MCU software library providing a large collection of embedded software for AVR® and SAM flash MCUs and Wireless: megaAVR®, AVR XMEGA®, AVR UC3, SAM devices, ATWINC, ATWILC and ATBTLC. ASF3 is configured by the ASF Wizard in Atmel Studio 7 (installed as an extension to Studio). ASF3 is also available as a standalone (*.zip) with the same content as Studio extension.