Minimum Event Duration Must Exceed Selected Clock Period

Event detection will fail if TCBn receives an input event with a high/low period shorter than the period of the selected clock source (CLKSEL in TCBn.CTRLA).

This applies to the TCB modes (CNTMODE in TCBn.CTRLB) Time-out check and Input Capture Frequency and Pulse-Width Measurement mode.

Work around

Ensure that the high/low period of the input events is equal to or longer than the period of the selected clock source (CLKSEL in TCBn.CTRLA).

Affected Silicon Revisions

Rev. A Rev. B Rev. C Rev. D        
* X * X        
Parent topic: TCB