13.4.8 Register Access Protection

All registers with write-access can be write-protected optionally by the Peripheral Access Controller (PAC), except for the following registers:

  • Write Control (WRCTRL) register
  • AHB Slave Bus Interrupt Flag Status and Clear (INTFLAGAHB) register
  • Peripheral Interrupt Flag Status and Clear n (INTFLAG A/B/C...) registers

Optional write-protection by the Peripheral Access Controller (PAC) is denoted by the "PAC Write-Protection" property in each individual register description.

PAC write-protection does not apply to accesses through an external debugger.