Serial Peripheral Interface (SPI)

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wikipedia:Serial Peripheral Interface can be used to connect a wide variety of peripherals - displays, network controllers (Ethernet, CAN bus), UARTs, etc


  • SCLK: Serial Clock (output from master)
  • MOSI: Master Out Slave In (data output from master)
  • MISO: Master In Slave Out (data output from slave)
  • SS: Slave Select (often active low, output from master)

See also[edit]