I2C Serial Bus
Inter-Integrated Circuit
3.4 Mbps

Max Speed

10 meters

Max Distance

Multi-drop Bus

Topology

1008

Max Nodes

Technical Specifications
Detailed technical information and protocol characteristics.
Physical Layer Single-ended
Wire Count 2
Power Delivery No
Communication Mode Synchronous
Architecture Multi-master
Error Detection ACK/NACK
Addressing Method 7-bit/10-bit Address
Industry & Standards
Industry domain, standards body, and implementation details.
Industry Domain Embedded Systems
Primary Application IC Communication
Year Introduced 1980
Standard Body NXP/Philips
Implementation Cost Low
Complexity Level Low
Description
Detailed overview and key characteristics of the protocol.
A simple two-wire serial communication protocol designed for short-distance communication between integrated circuits. Uses SDA (data) and SCL (clock) lines with built-in addressing to connect multiple devices on the same bus.