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TWR-KW24D512 MCG FEI mode

Question asked by Lu Wang on Mar 15, 2016
Latest reply on Mar 28, 2016 by isaacavila

I am now using TWR-KW24D512 and wants to keep TWR-KW24D512 running under MCG FEI mode after reseting.

I did not change the default register value for MCG_C1 and MCG_C4, and also use the factory's trim value after resetting.

Could I confirm that the board is running under FEI mode?

Could I know what is the rate of the system clock? Is it 32.768kHz?

Could I know UART module clock is the system clock?

I encounter a UART issue after resetting. The UART does not work properly if the UART module clock is 32768*640.

But it begins to work, if the UART module clock is 32768*480....

Could I know the reason?