Power Distribution of K66F

[haozh]

Power distribution of K66F

Hello Team, 

I have a question regarding the power distribution of K66F schematics. If I power the board through the openSDA usb connector, the P3V3_SDA is powered through U17 which means J18 should shorted by R61. However, I find that both R84 and R61 is not populated on the board. Can you tell me where the power of P3V3_SDA is from if J18 is not connected. Also, I found that SDA_VOUT33 is not connected too.

Regards,

Hao

[Robin_Shen]

Hi Hao,

P3V3_SDA is powered through J7(SDA_VOUT33).

About the VREGIN and VOUT33, here you can refer:

Best Regards,

Robin

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[haozh]

Thank you very much Robin. It is very helpful. Does any NXP mcu has the USB regulator embedded?

Hao

[Robin_Shen]

All the Kinetis MCU with USB module has the USB regulator embedded.