Advantages and disadvantages of serial peripheral interface (SPI)

There are some important advantages of serial peripheral interface (SPI) are given below,

• It has complete flexibility for the bits transferred i.e. not limited to 8 bit word.
• It has very simple hardware interfacing.
• Not limited to any maximum clock speed, enabling potentially high speed
• It’s faster than asynchronous serial.
• It supports multiple slaves
• It supports full duplex communication.
• It having a one unique bus signal per device called as chip select and all other signals are shared.
• No arbitration failure modes.
• It has no transceivers are needed.

There are some important disadvantages of serial peripheral interface (SPI) are given below,

• It requires more pin on IC packages as compare to I²C.
• It does not support hot swapping (dynamically adding nodes).
• It supports only one master device.
• No error checking protocol.
• SPI usually requires separate SS lines to each slave, which can be problematic if numerous slaves are needed.