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I2C without ODE enable, 0.4V

Question asked by Dawei You Employee on Jun 19, 2014
Latest reply on Jun 24, 2014 by Dawei You

Hi:

 

I meet same problem with below link.

Kinetis I2C ODE

 

when ODE bit is not enable in PCR register, the low voltage (0V expected) from slave device is 0.3V instead,

I know now is pull-push structure, but how the 0.3v generated? and input and output circuit is same one or disconnected when operating the other?

thx.

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