27.1.2 Register Write Protection
To prevent any single software error from modifying the configuration of the Reset Controller (RSTC), Shutdown Controller (SHDWC), Periodic Interval Timer (PIT), Slow Clock Controller (SCKC), Real-time Clock (RTC) and Watchdog Timer (WDT), some registers of these peripherals can be write-protected by setting the WPEN bit in the System Controller Write Protection Mode register (SYSC_WPMR).
Note: The WDT embeds additional write protection
mechanisms.
The following registers can be write-protected when SYSC_WPMR.WPEN=1:
- WDT Control Register
- WDT Mode Register
- RSTC Mode Register
- SHDWC Mode Register
- SHDWC Wakeup Inputs Register
- PIT Mode Register
- SCKC Configuration Register
- RTC Control Register
- RTC Mode Register
- RTC Time Alarm Register
- RTC Calendar Alarm Register