26.1 Features
- Full-Duplex, Three-Wire Synchronous Data Transfer
 - Master or Slave Operation
 - LSB First or MSB First Data Transfer
 - Seven Programmable Bit Rates
 - End of Transmission Interrupt Flag
 - Write Collision Flag Protection
 - Wake-up from Idle Mode
 - Double-Speed (CK/2) Master SPI Mode
 
