SPI AND I2C.pptx

SPI AND I2C

1. SPI AND I2C

2. SPI SPI (Serial Peripheral Interface) and I2C (Inter-Integrated Circuit) are two commonly used communication protocols for connecting peripherals and devices within electronic systems. Both protocols are widely used in embedded systems, microcontrollers, and various electronic devices.

3. SPI (Serial Peripheral Interface): SPI is a synchronous serial communication protocol that enables full-duplex communication between a master device and one or more slave devices. It typically uses four lines for communication: SCLK (Serial Clock): Provides a timing signal generated by the master to synchronize data transfer. MOSI (Master Output, Slave Input): Transmits data from the master to the slave(s). MISO (Master Input, Slave Output): Transmits data from the slave(s) to the master. SS/CS (Slave Select/Chip Select): Enables the master to select a specific slave device for communication.

4. I2C I2C uses a master-slave configuration as well, where the master initiates and controls communication with the slave devices. Unlike SPI, I2C supports multiple devices connected to the same bus, and each device has a unique address. The master device addresses the specific slave device it wants to communicate with during each transaction. I2C is commonly used for connecting peripherals and integrated circuits that require lower data transfer rates, such as sensors, EEPROMs, real-time clocks, and other low to moderate bandwidth devices. It is often preferred in applications where there is a need for multiple devices to share the same communication bus. Both SPI and I2C have their own advantages and use cases, and the choice between them depends on factors such as data transfer speed, the number of devices, system requirements, and the specific application needs .