IIC (or I2C) stands for InterIntegratedCircuit, also (and usually) pronounced EyeSquaredCee.  The two is typically superscripted like the standard mathematical notation for exponentiation; WardsWiki doesn't allow us to write super or subscripts currently.

It is a 2-wire, clocked serial bus developed by PhilipsSemiconductor as an inexpensive, electronically simple way of communicating between the various ICs in a complex circuit.

It is enabled directly in a variety of MicroProcessors and MicroControllers, and a purpose-built controller, the PCF8584 (also by Philips).

It can be called a semi-synchronous, session-framed, bit-serial, byte-acknowledged protocol.  It is the foundation for a widely used protocol convention, the AccessBus.

Using IIC, several small, inexpensive devices, each with its own control duties, can be chained together with a central controller.  Quite useful in modular device systems.

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CategoryHardware