I just was looking at https://www.pjrc.com/store/ic_mkl02_t4.html https://www.pjrc.com/store/ic_mkl02_t4.html maybe this will give you some context, its about

I just was looking at https://www.pjrc.com/store/ic_mkl02_t4.html https://www.pjrc.com/store/ic_mkl02_t4.html maybe this will give you some context, its about a small controller booting a larger SOC ARM part