ATSAMA5D36 MDKA5D36 EK T70 development kit 536MHz Cortex A5 256MB DDR2 256MB NAND HS USB ISI - Demo board August 31, 2020 ATSAMA5D36 development EK MDKA5D36 + T70 ATSAMA5D36 development EK MDKA5D36 T70