Input Capture Frequency Measurement Mode

In this mode, the TCB captures the counter value and restarts on either a positive or negative edge of the event input signal.

The interrupt flag is automatically cleared after the high byte of the Compare/Capture register (TCBn.CCMP) has been read, and an interrupt request is generated.

The figure below illustrates this mode when configured to act on rising edge.

Figure 1. Input Capture Frequency Measurement