AnsweredAssumed Answered

QDEC/FTM QDEC Maximum Expected Count/Decode Speed?

Question asked by Jeff Chan on Mar 18, 2017
Latest reply on Mar 21, 2017 by xiangjun.rong

It seems clear enough that the maximum count frequency for the KV4x series directly relates to the Peripheral Bus Clock rate (for Example 100MHz).  Can I really expect anything at all near 100MHz, or should I derate for some reason?

 

However, I wasn't able to find any relative method of estimating the maximum count frequency for a FTM based Quadrature Decoder. 

 

I assume it has something to do with the chosen clock.  but perhaps it takes several "clock cycles" to sample/debounce/filter the incoming signal.  Is there a good FTM "derating" that I should apply?  

Outcomes