AT91SAM7X512-AU AT91SAM7X512-AU-001 AT91SAM7X512AU-001 AT91SAM7X512-AU-999 AT91SAM7X512B AT91SAM7X512B-AU AT91SAM7X512B-AUR AT91SAM7X512B-CU AT91SAM7X512B-CUR AT91SAM7X512-CU