topic Re: KEAZ64 muddle in Kinetis Microcontrollers

KEAZ64 muddle

mjbcswitzerland — Mon, 14 Nov 2016 18:37:55 GMT

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

Re: KEAZ64 muddle

Robin_Shen — Tue, 15 Nov 2016 07:12:38 GMT

Hi Mark,

The S9KEAZ64AMLH and S9KEAZN64AMLH are different chips. For the customer using FRDM-KEAZ64, the chip on that board is S9KEAZ64AMLH. So they need read the KEA128RM.

The part numbers are very similar, sorry for this confusion.

Best Regards,

Robin

Re: KEAZ64 muddle

mjbcswitzerland — Tue, 15 Nov 2016 10:29:55 GMT

Thanks Robin

It is the N in the name that I was missing (thinking that the S9KEA or SKEA may have been the difference).

Now all makes sense...

Regards

Mark