topic Re: Does anyone know if configuring the FRDM-K64F FTM ( flexible timer module) to use an external clock that if the external clock period can be infinite. in Kinetis Microcontrollers

Does anyone know if configuring the FRDM-K64F FTM ( flexible timer module) to use an external clock that if the external clock period can be infinite.

darringarrett — Thu, 05 Jun 2014 15:51:10 GMT

I need clock the FTM with an external clock that is driven off of a magnetic pickup mounted to a shaft of a motor. This motor rotates from equal to 0 rpm to 4000 rpm.

Re: Does anyone know if configuring the FRDM-K64F FTM ( flexible timer module) to use an external clock that if the external clock period can be infinite.

apanecatl — Thu, 05 Jun 2014 21:17:47 GMT

In theory it is infinite, for your specific case I don't think you will face any problem using your clock source (4,000/60=66.66Hz).

Re: Does anyone know if configuring the FRDM-K64F FTM ( flexible timer module) to use an external clock that if the external clock period can be infinite.

darringarrett — Fri, 06 Jun 2014 15:21:49 GMT

Thanks Pedro, I am mostly concerned about the ability of the clock to function from 0 rpm and up from there. So if the FTM can be clocked at very low frequencies then I could use this board.