What is the SPI Interface? When is this interface used?
Feb 26, 2021
Serial Peripheral Interface (SPI) is a synchronous serial communication interface that supports full-duplex mode where data can be sent and received simultaneously. It supports data transmission rates (>8Mbits) that are much faster/higher than UART and I2C. In SPI even if data/clock lines are shared between devices, each device will have a unique address wire. It is used in places where speed is important. For eg. SD cards, display modules or when info updates and changes quickly like thermometers).
SPI Communicates in 2 Ways:
There is no limit to the number of SPI devices that can be connected. However, there are practical limits due to the number of hardware select lines available on the main device with the chip select method or the complexity of passing data through devices in the daisy-chaining method. In point-to-point communication, the SPI interface does not require addressing operations and is full-duplex communication, which is simple and efficient.
Advantages of using the SPI Interface
Disadvantages of using the SPI Interface
Stay updated with the RF & Microwave Industry.
By signing up for our newsletter you agree to our Terms of Service and acknowledge receipt of our Privacy Policy.
By creating an account with us you agree to our Terms of Service and acknowledge receipt of our Privacy Policy.
Content submitted here will be sent to our editorial team who will review and consider it for publication on the website. you will be emailed if this content is published on everything RF.
Please click on the button in the email to get access to this section.