NVM_CMD_ERASE_APP=0x20, Erase App. Section
NVM_CMD_ERASE_APP_PAGE=0x22, Erase App. Section page
NVM_CMD_LOAD_FLASH_BUFFER =0x23, Load Flash page buffer
NVM_CMD_WRITE_APP_PAGE=0x24, Write App. Section page
NVM_CMD_ERASE_WRITE_APP_PAGE=0x25,Erase-and-write App. Section page
NVM_CMD_ERASE_FLASH_BUFFER=0x26,Erase/flush Flash page buffer