The compare and capture channels can be used as input capture channels to capture events from the Event System or I/O pins and give them a timestamp. This mode is selected when EVTCTRL.EVACT is configured either as OFF, RETRIGGER, COUNT or START. The following figure shows four capture events for one capture channel.
Figure 1. Input Capture Timing
The TC can detect capture overflow of the input capture channels: When a new capture event is detected while the Capture Interrupt flag (INTFLAG.MCx) is still set, the new timestamp will not be stored and INTFLAG.ERR will be set.