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 |
| MPXMODE | select operation bus mode |
| ALEINV | set up the polarity of the ALE signal |
| MPXDOFF | select whether or not the address is output to the data lines in multiplex mode |
| MPXCSOF | select a CS assertion from the start of accessing to the end of address output |
| MOEXEUP | select how to set the MOEX width |