24.3.3.1.5 Input Capture Pulse-Width Measurement Mode

In the Input Capture Pulse-Width Measurement mode, the input capture pulse-width measurement will restart the counter on a positive edge and capture 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 timer 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.

Figure 24-7. Input Capture Pulse-Width Measurement