41.5.8 Register Access Protection

Registers with write access can be optionally write protected by the PAC, except for the following:

Interrupt Flag Status and Clear register (INTFLAG)
Status register (STATUS)
Period and Period Buffer registers (PER, PERBUF)
Compare/Capture Value registers and Compare/Capture Value Buffer registers (CCx, CCBUFx)

Note: Optional write protection is indicated by the PAC Write Protection property in the register description.

Write protection does not apply for accesses through an external debugger.

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