connecting VREG pin in MK22FN512VLH12 MCU

[vishalgirisagar]

Hi All,

  I am using MK22FN512VLH12 MCU in my design. I am confused about a pin VREG. How should I connect this pin? Any suggestions would help greatly.

Thanks in Advance.

[Jorge_Gonzalez · Accepted solution]

Hello Vishal Girisagar:

I suppose you mean the VREGIN pin. If using the USB module then VREGIN is the input for the internal USB voltage regulator and you need to provide from 2.7 V to 5.5 V to this pin, as noticed in the datasheet:

And in the pin VOUT33 you must connect a capacitor:

If not using USB functionality, then you can leave the pins floating and also disable the USB regulator by writing 0 to SIM_SOPT1[USBREGEN].

Regards!,
Jorge Gonzalez

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[vishalgirisagar]

Hi Jorge,

  Thank you...