BOR_LEV=B_0x0, OCTO2_HSLV=B_0x0, OCTO1_HSLV=B_0x0, IWDG_HW=B_0x0, NRST_STOP=B_0x0, IWDG_FZ_SDBY=B_0x0, VDDIO_HSLV=B_0x0, NRST_STBY=B_0x0, IWDG_FZ_STOP=B_0x0
FLASH option byte word 1 status register
| BOR_LEV | Brownout level These bits reflects the power level that generates a system reset. 0 (B_0x0): BOR OFF, POR/PDR reset threshold level is applied 1 (B_0x1): BOR Level 1, the threshold level is low (around 2.1 V) 2 (B_0x2): BOR Level 2, the threshold level is medium (around 2.4 V) 3 (B_0x3): BOR Level 3, the threshold level is high (around 2.7 V) |
| IWDG_HW | Independent watchdog HW Control 0 (B_0x0): IWDG watchdog is controller by hardware 1 (B_0x1): IWDG watchdog is controlled by software |
| NRST_STOP | Reset on stop mode 0 (B_0x0): Independent WDG generates a reset if STOP mode is requested 1 (B_0x1): Independent WDG does not generate a reset if STOP mode is requested |
| NRST_STBY | Reset on standby mode 0 (B_0x0): Independent WDG generates a reset if STANDBY mode is requested 1 (B_0x1): Independent WDG does not generate a reset if STANDBY mode is requested |
| OCTO1_HSLV | XSPIM_P1 High-Speed at Low-Voltage 0 (B_0x0): I/O XSPIM_P1 High-Speed option disabled 1 (B_0x1): I/O XSPIM_P1 High-Speed option enabled |
| OCTO2_HSLV | XSPIM_P2 High-Speed at Low-Voltage 0 (B_0x0): I/O XSPIM_P2 High-Speed option disabled 1 (B_0x1): I/O XSPIM_P2 High-Speed option enabled |
| IWDG_FZ_STOP | IWDG stop mode freeze When set the independent watchdog IWDG is frozen in system Stop mode. 0 (B_0x0): Independent watchdog frozen in Stop mode 1 (B_0x1): Independent watchdog keep running in Stop mode |
| IWDG_FZ_SDBY | IWDG standby mode freeze When set the independent watchdog IWDG is frozen in system Standby mode. 0 (B_0x0): Independent watchdog frozen in Standby mode 1 (B_0x1): Independent watchdog keep running in Standby mode |
| PERSO_OK | Personalization OK This bit is set on STMicroelectronics production line. |
| VDDIO_HSLV | I/O High-Speed at Low-Voltage This bit indicates that the product operates below 2.5 V. 0 (B_0x0): Product working in the full voltage range, I/O speed optimization at low-voltage disabled 1 (B_0x1): Product operating below 2.5 V, I/O speed optimization at low-voltage feature allowed |