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What are the precautions for using the I2C lighting solution?

Last Updated on：2023-02-17 07:06:45

To use the I2C solution, pay attention to the PCB layout. I2C signals are vulnerable to interference from switch signals (AC-DC drive circuit). If the interference is serious, add a 10 pF to 50 pF filter capacitor to the DAT and CLK signal during the PCB layout design to reduce interference. Pull-up resistors need to be added to the physical circuits of the peripheral I2C DAT and CLK signals. Typically, the resistance value is 4.7 kiloohms, which can be adjusted based on the actual scenario.