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MK20: Internal Clock tolerance Query

Question asked by Prasant J on Sep 21, 2018
Latest reply on Sep 26, 2018 by Kerry Zhou
I'm trying to see if I can use internal fast clock of 4Mhz (MK20DNxxxVLL10) instead of using external crystal. I could not find tolerance on the internal clock in datasheet over temperature, life or any other factor.
I want to see if I can use it for USB and CAN buses clock source.
Any inputs on the above will be helpful.
Regards, Pj