VDD RELATION TO GPIO VOLTAGE LEVEL.

[priyangeorge]

Hi there,

      I am using mkl25z128vlk4 in one of my project. I want to drive the controller at 2.8V in my circuit to avoid level conversion required if i drive the same @3.3V. I want to know whether the gpio high voltage level is equal to vdd . i.e if I am applying 2.8V at Vdd pin will the gpio high level be 2.8V. I am kind of new with this controller and on a tight schedule. Any kind of help is appreciated.    

Regards,

Priyan George

[kerryzhou]

Hi priyan george,

     About the higher level in the MCU, you can find it in the KL25 datasheet.

   http://www.nxp.com/files/32bit/doc/data_sheet/KL25P80M48SF0.pdf?fasp=1&WT_TYPE=Data%20Sheets&WT_VEND... 

    The input high voltage:

   The output high level:

Wish it helps you!

If you still have question, please contact me!

Have a great day,
Kerry

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