https://community.nxp.com/t5/S32K/internal-clock-deviation/m-p/1591074#M20330 <P><A href="mailto:Hi@yangaichimantou" target="_blank">Hi@yangaichimantou</A></P> <P>yes ,you can calculate it like this, but it's not entirely accurate.</P> <P>because the PLL has a filtering effect on the input source jitter, there is inherent PLL jitter on the generated output,so a completely accurate calculation is not easy to quantify.</P> <P>BR!</P> <P>&nbsp;</P> <P>&nbsp;</P> Wed, 01 Feb 2023 07:32:16 GMT Senlent 2023-02-01T07:32:16Z https://community.nxp.com/t5/S32K/internal-clock-deviation/m-p/1590954#M20326 <P>Hi,</P><P>We need S32K to calculate high precision time.</P><P>We want to know, if we use external crystal of 16M and frequency tolerance of 1 ppm.</P><P>S32K internal clock double 10x frequency by PLL.</P><P>Then the internal time deviation may be 10 times of the external crystal deviation?</P><P>Or do we have other experiment data or calculate method?</P> Wed, 01 Feb 2023 03:44:18 GMT https://community.nxp.com/t5/S32K/internal-clock-deviation/m-p/1590954#M20326 yangaichimantou 2023-02-01T03:44:18Z https://community.nxp.com/t5/S32K/internal-clock-deviation/m-p/1591074#M20330 <P><A href="mailto:Hi@yangaichimantou" target="_blank">Hi@yangaichimantou</A></P> <P>yes ,you can calculate it like this, but it's not entirely accurate.</P> <P>because the PLL has a filtering effect on the input source jitter, there is inherent PLL jitter on the generated output,so a completely accurate calculation is not easy to quantify.</P> <P>BR!</P> <P>&nbsp;</P> <P>&nbsp;</P> Wed, 01 Feb 2023 07:32:16 GMT https://community.nxp.com/t5/S32K/internal-clock-deviation/m-p/1591074#M20330 Senlent 2023-02-01T07:32:16Z