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TCA6424A: About TCA6424A

user6448843
Prodigy 160 points
Part Number: TCA6424A

Tool/software:

About TCA6424A

I have a question about the timing requirements of the I2C interface.


I would like to confirm the definition of tsp (I2C spike time).
Does it apply when the voltage level drops due to noise, causing SCL to fall below VIH (0.7 x VCCI)?

Also, spikes do not usually occur, right?
(It is desirable that spikes do not occur, right?)

 

  • 0
    Guru 317370 points

    Pulses (either high or low) that are shorter than 50 ns are ignored. (This is a requirement of the I²C specification.)

    I²C signals are not very well protected against noise, so spikes might occur in practice.