26.4.7 Register Access Protection

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

  • Write Control (WRCTRL) register
  • AHB Subordinate 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.

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