37.5.6 Register Access Protection

Registers with write access can be optionally write-protected by the 15 Peripheral Access Controller (PAC), except for the following:

  • The Device Interrupt Flag (INTFLAG) register
  • The Endpoint Interrupt Flag (EPINTFLAG) register
  • The Host Interrupt Flag (INTFLAG) register
  • The Pipe Interrupt Flag (PINTFLAG) register
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.