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SDA is having a ____________transition when the clock line SCL is high.(a) high to low(b) low to high(c) low to low(d) high to highI had been asked this question in exam.Question is from I2C Protocol in division Internet Principles of IOT

Answer»

The correct answer is (a) high to low

To explain I would say: SDA is having a high to low transition when the clock line SCL is high. Under normal CIRCUMSTANCES this does not happen as you can see in the subsequent clock PULSES that the data line is STABLE in one STATE, EITHER high or low when the clock line is high.



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