Question

The MCU master has 1.8V I/Os, will this work with the sensor’s 1.9V~3.6V power supply requirements?

Answer

SCL and SDA require a minimum voltage of 0.7xVDD. The maximum VDD supply allowed for a 1.8V I/O is 2.57V. If this is not achievable, an I2C level shifter is recommended.

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