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Can the OpenSDA Interface circuit be simplified that is currently on the FRDM-K64F development board?

Question asked by David Moulin on Jan 17, 2020
Latest reply on Jan 18, 2020 by Kerry Zhou

Can the OpenSDA Interface circuit be simplified that is currently on the FRDM-K64F development board?  Are the level shifters actually needed?  If so, what are they used for if the the MK20DX128VFM5 TX and RX are directly connected to MK64FN1M0VLL12 uC UART 3?

Know do I to program the MK20DX128VFM5 with the the current OpenSDA firmware?

 

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