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|Designer||Philips Semiconductor, known today as NXP Semiconductors|
|Data signal||Open-collector or Open-drain|
|Width||data line (SDA) + clock line (SCL)|
|Bandwidth||0.1 / 0.4 / 1.0 / 3.4 / 5.0 Mbit/s|
(depending on mode)
I²C (Inter-Integrated Circuit), pronounced I-squared-C, is a kind of computer bus for connecting integrated circuits and processors. It was invented in 1982 by Philips Semiconductor (which is now NXP Semiconductors).