GPIO at 1.4V - KEA-128

vigneshbalaji — Wed, 30 Aug 2017 07:54:36 GMT

Hi,

I am running 2 KEA128's at 3.2 V by giving VDD externally so that all the GPIO's are at 3.2v. I am using the dev boards(TRK-KEA128 boards).

From Board 1, I give input to Board 2. I make the input to board 2 from board 1 as high and low. I see that after making inputs high and low to board 2 for sometime, The voltage on board1 and board2 becomes 1.5 V while it is supposed to be zero on the corresponding pins. But if i remove the connection between the pins both pins on board 1 and board 2 are zero but if i connect it back they go to 1.5 V. Can anyone explain me the reason for this?

Re: GPIO at 1.4V - KEA-128

kerryzhou — Thu, 31 Aug 2017 05:32:11 GMT

Hi VIGNESH BALAJI,

This question is the same question as your another post:

KEA128 GPIO at 1.4V

Please check my answer in that post.

Have a great day,
Kerry

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GPIO at 1.4V - KEA-128

Re: GPIO at 1.4V - KEA-128