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KEAZ64 muddle

Question asked by Mark Butcher on Nov 14, 2016
Latest reply on Nov 15, 2016 by Mark Butcher

Hi All

 

According to the circuit diagram of the FRDM-KEAZ64Q64 the processor is an S9KEAZ64AMLH, which is handled by the user's manual "9KEA64Z64M20SF0RM".
However the processor runs too quickly (FLL is faster than expected) and also the SIM_SCGC is not at the expected location.

 

If the user's manual "SKEA128Z80M48SF0RM" is however used as guide (would be correct for SKEAZ64AMLH) all works as expected.

 

Therefore, why is the chip in the circuit diagram and the marking on the chip on the board equal to the 40MHz S9KEAZ64AMLH, but behave as a 48MHz SKEAZ64AMLH ??? What is the source of this confusion?

 

Regards

 

Mark

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