Datasheet

137XMEGA E5 [DATASHEET]
Atmel-8153H–AVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheet–07/2014
Issue: TWI SM bus level one Master or slave remembering data
If a write is made to Data register, prior to Address register, the TWI design sends the data as soon as the write to
Address register is made. But the send data will be always 0x00.
Workaround:
Since single interrupt line is shared by both timeout interrupt and other TWI interrupt sources, there is a possibility
in software that data register will be written after timeout is detected but before timeout interrupt routine is exe-
cuted. To avoid this, in software, before writing data register, always ensure that timeout status flag is not set.
Issue: Temperature Sensor not calibrated
Temperature sensor factory calibration is not implemented on devices before date code 1324.
Workaround:
None.