Mode Register 0
| WDTH | specify Data Width |
| RBMON | Read Byte Mask ON |
| WEOFF | disable the write enable signal (MWEX) operation |
| NAND | NAND Flash memory mode |
| PAGE | NOR Flash memory page access mode |
| RDY | control the external RDY function |
| SHRTDOUT | select to which idle cycle the write data output is extended |