10.4.6.1 Sequence for Write Operation to Configuration Change Protected (CCP) I/O Registers

The following steps are required to write to CCP-protected I/O registers:

1. The software writes the signature that enables a change of protected I/O registers to the CCP bit field in the CPU.CCP register.
2. Within the next four CPU instructions executed, the software must write the appropriate data to the protected register.

The configuration change protection re-enables automatically after the CPU executes the write instruction or after four other CPU instructions execute.