SPI (Serial Peripheral Interface)
What does SPI mean?
The Serial Peripheral Interface (SPI) is a serial communication protocol. It enables fast and synchronous data transfer between a master device—typically a microcontroller or PC—and one or more slave devices.
SPI was developed by Motorola in the 1980s and remains one of the most widely used interfaces in electronics today. Communication takes place over just a few lines: MOSI (Master Out, Slave In), MISO (Master In, Slave Out), SCLK (Serial Clock), and one or more Chip Select lines (CS/SS). This simple structure allows for high transfer speeds with very low latency.
SPI is used in many areas: in embedded systems for sensors, displays, and memory chips, in AD/DA converters, and also in measurement and test technology. Devices such as signal generators or oscilloscopes can be directly and closely controlled with it.
Thanks to its flexibility, SPI is an efficient solution for high-speed data communication. Today, it is indispensable in both industrial electronics and high-frequency measurement technology.