23.4.10 Register Write Protection
To prevent any single software error from corrupting SYSC behavior, certain registers in the address space can be write-protected by setting the WPEN bit in the ”System Controller Write Protection Mode Register” (SYSC_WPMR).
The following registers can be write-protected:
- RSTC Mode Register(1)
- RTT Mode Register(2)
- RTT Alarm Register(2)
- RTC Control Register(3)
- RTC Mode Register(3)
- RTC Time Alarm Register(3)
- RTC Calendar Alarm Register(3)
- General Purpose Backup Registers(4)
- Supply Controller Control Register
- Supply Controller Supply Monitor Mode Register
- Supply Controller Mode Register
- Supply Controller Wakeup Mode Register
- Supply Controller Wakeup Inputs Register
Note:
- See the section "Reset Controller (RSTC)".
- See the section "Real Time Timer (RTT)".
- See the section "Real Time Clock (RTC)".
- See the section "General Purpose Backup Registers (GPBR)".