I²C: Serial communication bus that connects low-speed embedded peripheral devices
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).
| I²C | ||
|---|---|---|
| Type | Computer bus | |
| Production history | ||
| Designer | Philips Semiconductor, known today as NXP Semiconductors | |
| Designed | 1982 | |
| 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) | |
| Protocol | Serial, half-duplex | |
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