topic Configure ADC for fixed conversion rate in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/Configure-ADC-for-fixed-conversion-rate/m-p/419975#M24009 <HTML><HEAD></HEAD><BODY><P>Hi, what is the easiest way to configure KL25 ADC to output conversions at a fixed rate of 50 Hz? Is it possible to achieve this using only the ADC module or do I have to use timer module to trigger each conversion at the correct moment?</P></BODY></HTML> Tue, 02 Jun 2015 09:54:45 GMT martindusek 2015-06-02T09:54:45Z Configure ADC for fixed conversion rate https://community.nxp.com/t5/Kinetis-Microcontrollers/Configure-ADC-for-fixed-conversion-rate/m-p/419975#M24009 <HTML><HEAD></HEAD><BODY><P>Hi, what is the easiest way to configure KL25 ADC to output conversions at a fixed rate of 50 Hz? Is it possible to achieve this using only the ADC module or do I have to use timer module to trigger each conversion at the correct moment?</P></BODY></HTML> Tue, 02 Jun 2015 09:54:45 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Configure-ADC-for-fixed-conversion-rate/m-p/419975#M24009 martindusek 2015-06-02T09:54:45Z Re: Configure ADC for fixed conversion rate https://community.nxp.com/t5/Kinetis-Microcontrollers/Configure-ADC-for-fixed-conversion-rate/m-p/419976#M24010 <HTML><HEAD></HEAD><BODY><P>Hello Martin</P><P></P><P>If you set the ADC in continuous conversion mode with highest accuracy, slowest ADC clock, maximum HW averaging and longest time added it will fire at about 650Hz.</P><P></P><P>Therefore, the method to use to get accurate 50Hz triggering is to use hardware trigger mode based on a PIT timer.</P><P></P><P>Regards</P><P></P><P>Mark</P><P></P><P>Kinetis: <A href="http://www.utasker.com/kinetis.html" title="http://www.utasker.com/kinetis.html">µTasker Kinetis support</A> </P><P>KL25: <A href="http://www.utasker.com/kinetis/FRDM-KL25Z.html" title="http://www.utasker.com/kinetis/FRDM-KL25Z.html">µTasker Kinetis FRDM-KL25Z support</A>&nbsp; / <A href="http://www.utasker.com/kinetis/TWR-KL25Z48M.html" title="http://www.utasker.com/kinetis/TWR-KL25Z48M.html">µTasker Kinetis TWR-KL25Z48M support</A> <BR />ADC/DAC: <A href="http://www.utasker.com/docs/uTasker/uTaskerADC.pdf" title="http://www.utasker.com/docs/uTasker/uTaskerADC.pdf">http://www.utasker.com/docs/uTasker/uTaskerADC.pdf</A> </P><P><EM>For the complete "out-of-the-box" Kinetis experience and faster time to market</EM></P></BODY></HTML> Tue, 02 Jun 2015 13:54:51 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Configure-ADC-for-fixed-conversion-rate/m-p/419976#M24010 mjbcswitzerland 2015-06-02T13:54:51Z