how to change I2C bus fall time? Now I use fast mode 400Kbit/s, fall time is very fast, and cannot meet the UM10204 SPEC demand. I simulated the circuit by hyperlynx, but adding series resistor seems not well. Thanks a lot.
guoweisun I have verified pull up resistor has almost any influence on fall time.
Hi,
Do you accept slow down you IIC speed?
My phone number 18611760398, I am glad to have a talk with you.
Hi
Already give you call and clear your question
Mr Sun，thanks a lot.
Could you please explain it more clearly? I don't understand why speed has relationship with fall time. Thanks a lot.
If don't down the speed,only method to increase fall time is enlarge the pull up resistor.
