If you're willing to do a little hardware and software mod, the Due can be made to use the flash available on the 16u2. See my writeup at New Arduino Due Library: DueEEPROM - Libraries - Arduino Forum
If you're willing to do a little hardware and software mod, the Due can be made to use the flash available on the 16u2. See my writeup at New Arduino Due Library: DueEEPROM - Libraries - Arduino Forum