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I²C is a popular digital interface used for short-range chip-to-chip communication. It features a simple 2-wire bus, ease of implementation, and up to 400kHz operation in fast mode. As with any other standard, designers may run into issues when their application pushes the original I²C specification to its limit or when the specification falls short in addressing today’s requirements. As systems become more complex, more I²C devices are added to the bus and may start to compromise certain parameters. This slide shows some of the most common issues that I²C system designers face today. They will be addressed throughout the rest of this presentation. The varieties of issues are of electrical, timing, or signaling nature.

PTM Published on: 2013-06-20