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S32k clock tolerance

Question asked by m. m. on Jul 23, 2018
Latest reply on Jul 25, 2018 by Diana Batrlova

Hi

I am using the s32k144 evalboard. I am suing the fast internal clock:FIRC

I generated a PWM signal based on FIRC, which is supposed to be 16 Mhz, however it is only 15.6. This gives me more than 2.5 % difference/tolerance.

According to:

https://www.nxp.com/docs/en/data-sheet/S32K-DS.pdf 

Table 19.   Fast internal RC Oscillator electrical specifications

There should be only 1%. How comes?

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