What is the maximum recommended total bus capacitance for an I2C bus according to the standard? Explain how pull-up resistors (Rp) are related to managing this capacitance, and what wiring best practices should be followed to minimize capacitance and ensure reliable communication.
Navigate directly to 'https://www.i2c-bus.org/i2c-primer/termination-versus-capacitance/' Identify the maximum total bus capacitance specified by the I2C standard. Locate information on how pull-up resistors (Rp) relate to managing capacitance, including any recommendations or warnings. Find the recommended wiring practices to minimize capacitance. Synthesize the gathered information into a concise answer.
State that the I2C standard limits total bus capacitance (Cb) to a maximum value of 400 pF. Explain that while reducing pull-up resistor (Rp) values can allow operation with higher capacitance, it is not recommended by the standard as it can lead to unreliable communication. State that I2C connections should always be as short as possible and connected by a suitable wiring pattern (c.f. I2C specification, section 17.3) to minimize capacitance.