22.3.3.1.5 Input Capture Pulse-Width Measurement Mode

In the Input Capture Pulse-Width Measurement mode, the input capture pulse-width measurement restarts the counter on a positive edge and captures the next falling edge before an interrupt request is generated. The CAPT interrupt flag is cleared automatically after reading the low byte of the Compare/Capture (TCBn.CCMP) register. An OVF interrupt and event are generated when the CNT is MAX. The TCB peripheral will automatically switch between rising and falling edge detection, but a minimum edge separation of two clock cycles is required for correct behavior.

This mode requires TCB to be configured as an event user and is explained in the Events section.