Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32H7x5_CM7/SYSCFG/UR16#0x0
SYSCFG user register 16
Freeze independent watchdog in Stop mode
Private key programmed
https://github.com/cmsis-svd/cmsis-svd-data