13.21.2 Features

SERCOM SPI includes the following features:

• Full-duplex, four-wire interface (MISO, MOSI, SCK, SS)
• Single-buffered transmitter, double-buffered receiver
• Supports all four SPI modes of operation
• Single data direction operation allows alternate function on MISO or MOSI pin
• Selectable LSB- or MSB-first data transfer
• Can be used with DMA
• Master operation:
  • Serial clock speed, f_SCK=1/t_SCK⁽¹⁾
  • 8-bit clock generator
  • Hardware controlled SS
• Slave operation:
  • Serial clock speed, f_SCK=1/t_SSCK⁽¹⁾
  • Optional 8-bit address match operation
  • Operation in all sleep modes
  • Wake on SS transition

1. For t_SCK and t_SSCK values, refer to SPI Timing Characteristics.