The NAND flash device is divided into 4096 blocks of 64 pages. Each page is 2048 bytes of data and 64 bytes of "spare data" (used for ECC and some metadata). | The NAND flash device is divided into 4096 blocks of 64 pages. Each page is 2048 bytes of data and 64 bytes of "spare data" (used for ECC and some metadata). |