Hi, thanks for the really quick respone, appeciate this. Good to know that it theoretically works. We will avoid activating the 2nd interface for sure, but: What to the max could happen, wenn the 2nd I2C interface is used? Aren't the pins 2/3 using an open-collector driver as usual for "normal" I2C busses? Then this should not damage the chip due to a short-cut to GND I would state. regards spachner
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