31.10.2 Asynchronous Partial Wakeup in Wait Mode (SleepWalking)

When the system is in Wait mode, all clocks of the system except SLCK are stopped. When an asynchronous clock request from a peripheral occurs, the PMC partially wakes up the system to feed the clock only to this peripheral. The rest of the system is not fed with the clock, thus optimizing power consumption. Finally, depending on user-configurable conditions, the peripheral either wakes up the whole system if these conditions are met or stops the peripheral clock until the next clock request. If a wakeup request occurs, SleepWalking is automatically disabled until the user instructs the PMC to enable SleepWalking. This is done by writing a ‘1’ to PIDx in the PMC SleepWalking Enable register (PMC_SLPWK_ER).