UM1632 Datasheet, PDF (25/32 Pages) STMicroelectronics – STM8L DALI slave interface

UM1632
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Application description
Application description
The hardware combination (STM8L1526-EVAL + STEVAL-ILM001V1) works as a DALI
slave device. The LD1 on the STM8L1526-EVAL kit is used as a light source. Its brightness,
fade-in/out times, etc., as defined by the DALI standard, can be controlled through DALI to
simulate normal lamp behavior.
The STEVAL-ILM001V1 provides all the functions required by the DALI standards. The
most important ones are:
• Level translation from DALI voltage levels (-6.5 to 22.5 V) to microcontroller levels (3.3
V / 5 V logic)
• Proper rise/fall times for the communication
• Current consumption limit (2 mA max.)
• Overvoltage protection for misconnection of rated mains voltage to DALI DA
connectors.
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