| FLASH_PER | program erase resume bit program erase suspend operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_PES | program erase suspend bit program erase suspend operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| USR | User define command enable. An operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_HPM | Drive Flash into high performance mode. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_RES | This bit combined with reg_resandres bit releases Flash from the power-down state or high performance mode and obtains the devices ID. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_DP | Drive Flash into power down. An operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_CE | Chip erase enable. Chip erase operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_BE | Block erase enable. A 64KB block is erased via SPI command D8H. Block erase operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_SE | Sector erase enable. A 4KB sector is erased via SPI command 20H. Sector erase operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_PP | Page program enable(1 byte ~256 bytes data to be programmed). Page program operation will be triggered when the bit is set. The bit will be cleared once the operation done .1: enable 0: disable. |
| FLASH_WRSR | Write status register enable. Write status operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_RDSR | Read status register-1. Read status operation will be triggered when the bit is set. The bit will be cleared once the operation done.1: enable 0: disable. |
| FLASH_RDID | Read JEDEC ID . Read ID command will be sent when the bit is set. The bit will be cleared once the operation done. 1: enable 0: disable. |
| FLASH_WRDI | Write flash disable. Write disable command will be sent when the bit is set. The bit will be cleared once the operation done. 1: enable 0: disable. |
| FLASH_WREN | Write flash enable. Write enable command will be sent when the bit is set. The bit will be cleared once the operation done. 1: enable 0: disable. |
| FLASH_READ | Read flash enable. Read flash operation will be triggered when the bit is set. The bit will be cleared once the operation done. 1: enable 0: disable. |