What does I²C mean in Computing?

This page is about the meanings of the acronym/abbreviation/shorthand I²C in the field in general and in the Computing terminology in particular.

Inter-Integrated Circuit

Computing

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Submitted by aviv on December 6, 2016

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Definition

What does I²C mean?

I²C
I2C (Inter-Integrated Circuit, eye-squared-C), alternatively known as I2C or IIC, is a synchronous, multi-master/multi-slave (controller/target), packet switched, single-ended, serial communication bus invented in 1982 by Philips Semiconductors. It is widely used for attaching lower-speed peripheral ICs to processors and microcontrollers in short-distance, intra-board communication. Several competitors, such as Siemens, NEC, Texas Instruments, STMicroelectronics, Motorola, Nordic Semiconductor and Intersil, have introduced compatible I2C products to the market since the mid-1990s. System Management Bus (SMBus), defined by Intel in 1995, is a subset of I2C, defining a stricter usage. One purpose of SMBus is to promote robustness and interoperability. Accordingly, modern I2C systems incorporate some policies and rules from SMBus, sometimes supporting both I2C and SMBus, requiring only minimal reconfiguration either by commanding or output pin use.

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"I²C." Abbreviations.com. STANDS4 LLC, 2024. Web. 22 Jul 2024. <https://www.abbreviations.com/term/1836699>.

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