26.1 Features

  • Two TWI instances TWI0 and TWI1
  • Simple, yet Powerful and Flexible Communication Interface, only two Bus Lines Needed
  • Both Master and Slave Operation Supported
  • Device can Operate as Transmitter or Receiver
  • 7-bit Address Space Allows up to 128 Different Slave Addresses
  • Multi-master Arbitration Support
  • Up to 400 kHz Data Transfer Speed
  • Slew-rate Limited Output Drivers
  • Noise Suppression Circuitry Rejects Spikes on Bus Lines
  • Fully Programmable Slave Address with General Call Support
  • Address Recognition Causes Wake-up When AVR is in Sleep Mode
  • Compatible with Philips’ I2C protocol