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Inter-Integrated Circuit (I2C) Basics

Up to this point, we've only discussed point-to-point serial protocols. Wouldn't it be great if we could allow one controller to select by address any of a number of peripherals. Or even better, what if we could have multiple controllers connected to multiple peripherals on a single three-wire connection. That's exactly what the inter-integrated circuit or I2C protocol provides to us. Takeaways: At the completion of this lesson, each student should be able to: • explain the topology of an I2C network, • describe how open-collector connections allow multi-device communication across a single wire, • decipher an address or data frame of the I2C protocol, • contrast the address frames for 7-bit and 10-bit addressing, • describe clock stretching, and • explain how controllers detect collisions on an I2C connection. #i2c #serial #frame