Some of the typical applications where the SPI protocol is used include: SPI multi-device connection with several SS pins The number of slave devices that can be used in an SPI communication network is limited by the number SS (Slave Select) or CS (Chip Select) pins you have available. However, the slave selection is quite different from I2C. The SPI architecture typically consists of one master device and multiple slave devices that the master communicates with, which means that one set of data lines can be connected to multiple slave devices. The SPI pins can be labeled with various names depending on who the datasheet is from, so it is essential to carefully read the datasheet before starting your design. SS or CS - Slave select or Chip select (often an active-low signal, output by the master).MISO - Master In Slave Out (Data output from slave).MOSI - Master Out Slave In (Data output from master).SCLK - Serial clock (Output from master).The SPI communication protocol consists of four lines in addition to the ground, these are: The SPI protocol allows full-duplex communications, which means that devices connected to the bus can simultaneously send and receive data. The SPI protocol was developed by Motorola, although it is used in a considerable number of different ICs, modules, and devices produced by other manufacturers.
It is synchronous, which means it has a separate clock line. It is a serial communication bus commonly used for short-distance communications between microcontrollers and small peripherals, such as RF modules, shift registers, external flash ICs, and various sensors and SD cards. SPI stands for Serial Peripheral Interface. We will provide a useful summary of each type’s advantages and disadvantages at the end of this series. This is one of many popular protocols in common usage that we will be looking at.
Spi serial communication protocol series#
In this next article in our series that is looking at different types of Serial Communication Protocols, we will be looking at the popular SPI protocol.
0 kommentar(er)
