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Is the MMA9553L compatible with an I2C bus operating at 3.3V levels?

Question asked by Tim James on Aug 17, 2016
Latest reply on Aug 17, 2016 by Jose Alberto Reyes Morales

The abs. max. ratings table in the datasheet gives Vdd+0.3 as the maximum permitted input voltage but also lists a 20mA clamp diode current limit.  Does this mean that I can exceed the max. input voltage provided the current is limited to << 20mA?  If so then this implies I should be able to pull the SDA and SCL inputs up to 3.3V with, eg, 4k7R resistors.  Does this seem reasonable?  In our final design we will translate the logic levels 'properly' but for development purposes we are interesting in connecting the MMA9550L module from the evaluation kit to existing hardware so we can get a head start on software development.

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