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.

serial peripheral interface


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