I want to model a single one master and two I2C Slaves on a bus. I want to determine how long I can make the I2C Trace to the last/second slave.
How to model the length of the I2C Bus in LTSpice? Should I be using a transmission line model?
Electrical – How to model I2C Bus in LTSpice
i2cltspicemodeling
Best Answer
The length of the I2C bus manifests itself as capacitance, and you can model it as a lumped capacitor. The I2C bus (assuming typical short distances which it's intended for) is way to slow to be concerned with transmission line model.