topic Re: TWR-K70F120M Clock source. in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-K70F120M-Clock-source/m-p/619807#M37049 <HTML><HEAD></HEAD><BODY><P>Thank you very much!</P><P></P><P>On Thu, Nov 24, 2016 at 7:29 PM, Jonathan Iglesias &lt;admin@community.nxp.com&gt;</P></BODY></HTML> Thu, 24 Nov 2016 18:39:51 GMT john71 2016-11-24T18:39:51Z TWR-K70F120M Clock source. https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-K70F120M-Clock-source/m-p/619805#M37047 <HTML><HEAD></HEAD><BODY><P style="margin: 0cm 0cm 0pt; text-align: left; unicode-bidi: embed; direction: ltr;"><SPAN style="color: #000000; font-family: Calibri; font-size: medium;">I see in sysinit() the clock configured from the external 50Mhz oscillator. On the schematics I see also crystal 12Mhz connected. What do we need it for? Can we omit the crystal?</SPAN></P></BODY></HTML> Wed, 23 Nov 2016 16:44:45 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-K70F120M-Clock-source/m-p/619805#M37047 john71 2016-11-23T16:44:45Z Re: TWR-K70F120M Clock source. https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-K70F120M-Clock-source/m-p/619806#M37048 <HTML><HEAD></HEAD><BODY><P>Dear&nbsp;<SPAN style="color: #000000;"><A _jive_internal="true" data-avatarid="-1" data-userid="288570" data-username="john7" href="https://community.nxp.com/people/john7" style="color: #000000; border: 0px; font-weight: inherit; text-decoration: underline; font-size: 1.1em; padding: 0px 3px 0px 0px;">Evgeny Erenburg</A></SPAN>,</P><P>From what I saw on the Schematics you can &nbsp;disconnect the 12Mhz as long as the&nbsp;MCGOUTCLK has a clock source.</P><P>in the <A href="http://www.nxp.com/assets/downloads/data/en/schematics/TWR-K70F120M-SCH_C.pdf">schematics (5.1.1)&nbsp;</A>at the bottom there is some information about this clocks and some restrictions. please check that sections and tell me if it works.</P><P>Have a great day !</P><P></P><P>Best Regards</P><P>Jonathan</P></BODY></HTML> Thu, 24 Nov 2016 17:29:25 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-K70F120M-Clock-source/m-p/619806#M37048 Jonathan_Iglesias 2016-11-24T17:29:25Z Re: TWR-K70F120M Clock source. https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-K70F120M-Clock-source/m-p/619807#M37049 <HTML><HEAD></HEAD><BODY><P>Thank you very much!</P><P></P><P>On Thu, Nov 24, 2016 at 7:29 PM, Jonathan Iglesias &lt;admin@community.nxp.com&gt;</P></BODY></HTML> Thu, 24 Nov 2016 18:39:51 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-K70F120M-Clock-source/m-p/619807#M37049 john71 2016-11-24T18:39:51Z