https://community.nxp.com/t5/S32K/Why-CMU-should-run-on-a-different-clock-than-WDOG/m-p/1960215#M41266 <P>Got it. Thank you.</P> Tue, 24 Sep 2024 01:39:37 GMT longyi1234 2024-09-24T01:39:37Z https://community.nxp.com/t5/S32K/Why-CMU-should-run-on-a-different-clock-than-WDOG/m-p/1949507#M40664 <P>Why CMU should run on a different clock than WDOG?</P><P>The chip I use is S32K1xx. This is what the Reference Manual says:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="longyi1234_0-1725787753305.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/297731iA23CAA5400019A3E/image-size/medium?v=v2&amp;px=400" role="button" title="longyi1234_0-1725787753305.png" alt="longyi1234_0-1725787753305.png" /></span></P> Sun, 08 Sep 2024 09:30:04 GMT https://community.nxp.com/t5/S32K/Why-CMU-should-run-on-a-different-clock-than-WDOG/m-p/1949507#M40664 longyi1234 2024-09-08T09:30:04Z https://community.nxp.com/t5/S32K/Why-CMU-should-run-on-a-different-clock-than-WDOG/m-p/1950068#M40716 <P>Hi,</P> <P>the reason is simple: if clock of CMU fails, the watchdog resets application (because is running on another clock) - assuming that CMU's reset is the safe state. Next actions depend on supervisor system.</P> <P>If CMU and watchdog share the same clock, the application got stuck during clock malfunction.</P> <P>Best regards,</P> <P>Pavel</P> Mon, 09 Sep 2024 12:11:37 GMT https://community.nxp.com/t5/S32K/Why-CMU-should-run-on-a-different-clock-than-WDOG/m-p/1950068#M40716 PavelL 2024-09-09T12:11:37Z https://community.nxp.com/t5/S32K/Why-CMU-should-run-on-a-different-clock-than-WDOG/m-p/1960215#M41266 <P>Got it. Thank you.</P> Tue, 24 Sep 2024 01:39:37 GMT https://community.nxp.com/t5/S32K/Why-CMU-should-run-on-a-different-clock-than-WDOG/m-p/1960215#M41266 longyi1234 2024-09-24T01:39:37Z