11.5.2.4 Peripheral Access Errors
The following events will generate a Peripheral Access Error:
- Protected write: To avoid unexpected writes to a peripheral's registers, each peripheral can be write protected. Only the registers denoted as “PAC Write-Protection” in the module’s datasheet can be protected. If a peripheral is not write protected, write data accesses are performed normally. If a peripheral is write protected and if a write access is attempted, data will not be written and peripheral returns an access error. The corresponding interrupt flag bit in the INTFLAGn register will be set.
- Illegal access: Access to an unimplemented register within the module.
- Synchronized write error: For write-synchronized registers an error will be reported if the register is written while a synchronization is ongoing.
When any of the INTFLAGn registers bit are set, an interrupt will be requested if the PAC interrupt enable bit is set.