External clock into peripherals

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Anonymous
Not applicable

Is it possible to provide a PSoC5 peripheral (e.g. PWM) with a clock from an external source?  That is, can you connect the clock input on a PWM component to a digital input pin?  What is the maximum allowable frequency of such a connect?

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Bob_Marlowe
Level 10
Level 10
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Yes, of course this is possible for PSoC1/3 and 5, only PSoC4 is restricted with clock distribution. For max. frequencies have a look into the PWM datasheet.

   

I would suggest you to download and run Creator 3, there you can start a new project, connect an input pin to a PWM and compile.

   

 

   

Bob

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ETRO_SSN583
Level 9
Level 9
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Even though this is PSOC 4 there is a reference to using the approach with PSOC 3, 5LP. I

   

thinks its a not so subtle hint that meeting timing in any of the 3/4/5LP families should be

   

done this way.

   


   

     

   

            http://www.cypress.com/?rID=80799

   


   

Regards, Dana.

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Anonymous
Not applicable

Thanks for your help.  I was hoping it was possible to clock the UDB peripherals at a rate higher than the internal core clock.  It looks like that's not the case and, at least for the PWM case, are limited to 68MHz max.

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