27.4.3.2.1 Input Capture Prescaler

Using the input prescaler, the Input Capture module can capture a timer value on every 4th edge (MOD[3:0] = 0100) or every 16th edge (MOD[3:0] = 0101) of the ICx input pin.

The capture pulse-width requirements are different than those for Simple Capture mode. Because of synchronization requirements inside, the timer value captured will be one to two timer clock cycles after the time of the edge capture, as shown in Figure 27-7.