I also think that it's okay to pull up SCL and SDA ("other pins") to up to 6V. As Vdd max is only 2.2V I can not see a restriction for pin voltage vs. Vdd. No phantom powering as with AVR chips.
I also think that it's okay to pull up SCL and SDA ("other pins") to up to 6V. As Vdd max is only 2.2V I can not see a restriction for pin voltage vs. Vdd. No phantom powering as with AVR chips.