In the Time-Out Check mode, the peripheral starts counting on the first
signal edge and stops on the next signal edge detected on the event input channel. CNT
remains stationary after the Stop edge (Freeze state). In Freeze state, the counter will
restart on a new Start edge.
This mode requires TCB to be configured as an event user and is
explained in the Events section.
Start or Stop edge is determined by the Event Edge (EDGE) bit in the Event
Control (TCBn.EVCTRL) register. If CNT reaches TOP before the second edge, a CAPT
interrupt and event will be generated. If TOP is updated to a value lower than the CNT
upon reaching MAX, an OVF interrupt and the simultaneous event is generated, and the
counter restarts from BOTTOM. In Freeze state, reading the Count (TCBn.CNT) register or
Compare/Capture (TCBn.CCMP) register, or writing the Run (RUN) bit in the Status
(TCBn.STATUS) register has no effect.Figure 22-4. Time-Out Check Mode
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