MKW01 VR_ANA and VR_DIG

[luws]

Hello dear,

My question is: where can I find detailed description of pin VR_ANA and VR_DIG?

The description on reference manual or datasheet are insufficient.

I have test the voltage of VR_ANA and VR_DIG voltage which are both 1.58V on FRDM-KW01-9032 board.

So, what is the use for this two pins?

Thanks!

[estephania_mart]

Hello, 

Sorry for the inconvenience this might cause you, but the information in the documents you mention are the only ones available for the part.

Both pins are from the radio, those are working as a bypass and they need to be connected to the capacitor mentioned in the document. 

Regards, 

Estephania

[luws]

Dear Estephania,

Appreciate your reply.

Further question: Do you mean the two pins are bypass pins for decreasing the power noise, and I cannot use it as power supply or ADC reference? No use except connecting capacitors to ground?  I thought they were on-chip power supply.

Thank you!

Best regards,

Wenshuai