11.7.2 I/O Port Operation in Idle Mode

As the device enters Idle mode, the system clock sources remain functional and the CN module continues to operate synchronously. If one of the enabled CN pins changes state, the CNxIF bit (IFSx register) will be set. If the CNxIE bit (IECx register) is set, and its priority is greater than the current CPU priority, the device will wake from Idle mode and execute the CN Interrupt Service Routine (ISR).