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i2c waveform

Question asked by jeff gu on Nov 2, 2014
Latest reply on Nov 2, 2014 by Jorge_Gonzalez

Hi there,

I meet a problem about the i2c waveform. As you can see in attached figure, it is quite strange that the voltage level stay in the middle of waveform, about 1.2 volt. Presently the final result of read/write is correct, but the waveform is really not the one we expected.  Do you have any idea how to modify it? (I'm using K60, and I have ever tried the "High drive select" bit in Reigster I2C0_C2 of K60, but the result wave form is same)

 

Current Platform: IAR

MCU: MK60DX256ZVMC10

I2C Frq: 150KHz

 

i2c_wave_part.jpg

 

Jeff

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