18.6.1.2 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 data sheet 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.
• 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.