I2C (EN)

Definition

I2C (Inter-Integrated Circuit) is a serial communication protocol that enables the connection of integrated circuits over just two wire lines. It supports multi-point configurations and allows communication between one master and multiple slaves. I2C is commonly used for connecting sensors with microcontrollers due to its simple implementation and low wiring requirements.

Architecture

flowchart TD   Master[Mikrocontroller
Master] -->|SDA| Slave1[Sensor 1
Slave]   Master -->|SCL| Slave1   Master -->|SDA| Slave2[Sensor 2
Slave]   Master -->|SCL| Slave2   Master -->|SDA| Slave3[Sensor 3
Slave]   Master -->|SCL| Slave3      style Master fill:#f9f,stroke:#333,stroke-width:2px   style Slave1 fill:#bbf,stroke:#333,stroke-width:1px   style Slave2 fill:#bbf,stroke:#333,stroke-width:1px   style Slave3 fill:#bbf,stroke:#333,stroke-width:1px 

Im Kontext

• Wird typischerweise zusammen mit SPI, UART und USB verwendet
• Verwandt zu: SMBus, PMBus
• Beispiel-Einsatz: Verbindung von Temperatur-, Licht- und Beschleunigungssensoren mit einem Mikrocontroller