At the Feather M0's heartis an ATSAMD21G18 ARMCortex M0 processor, clocked at 48MHz and at 3.3Vlogic, the same one used in the newArduino Zero(http://adafru.it/2843). This chiphas a whopping 256K ofFLASH (8x more than theAtmega328 or 32u4) and32K of RAM (16xas much)...