ATXMEGA128A3U ATXMEGA128A3U-AN ATXMEGA128A3U-ANR ATXMEGA128A3U-AU ATXMEGA128A3U-AUR ATXMEGA128A3U-MH ATXMEGA128A3U-MHR ATXMEGA128A3U-MN ATXMEGA128A3U-MNR ATXMEGA128A4U-AN