I2C bus

The Inter-IC bus, commonly known as the I²C ("eye-squared-see") bus, is a control bus that provides the communications link between integrated circuits in a system. Developed by Philips in the early 1980s, this simple two-wire bus with a software-defined protocol has evolved to become the de facto worldwide standard for system control, finding its way into everything from temperature sensors and voltage level translators to EEPROMs, general-purpose I/O, A/D and D/A converters, CODECs, and microprocessors of all kinds.

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