Just Like I2C – The TWI Bus
The two wire interface (TWI) is used by several companies including Atmel. Even though this is not officially mentioned, the two buses are compatible with respect to practical use. Since the I2C name and logo are protected by Philips, the “new” name might have been choosen for non-technical reasons. In addition, the I2C specification includes a number of features which are rarely used e.g. 10-bit addressing, general call etc. The TWI cores may not support these features.
We found that there are no problems related to connecting EEPROMs, digital potentiometers and other slave devices to an Atmel TWI-enabled microcontroller. It is also possible to use telos Tracii XL to monitor the TWI traffic.
We found that there are no problems related to connecting EEPROMs, digital potentiometers and other slave devices to an Atmel TWI-enabled microcontroller. It is also possible to use telos Tracii XL to monitor the TWI traffic.