9.1.5 Unused Inputs and Outputs

To minimize leakage currents on the analog inputs, leave unused analog and reference inputs floating, or connect the inputs to mid-supply or to AVDD. Connecting unused analog or reference inputs to AVSS is possible as well, but can yield higher leakage currents on other analog inputs than the previously mentioned options.

Do not float unused digital inputs; excessive power-supply leakage current can result. Tie all unused digital inputs to the appropriate levels, DVDD or DGND, even when in power-down mode. Connections for unused digital inputs are:

• Tie the RESET pin to DVDD if the RESET pin is not used
• Leave the GPIO0 or GPIO1 pins configured in the default states as GPIO inputs and tie GPIO0 or GPIO1, respectively, to either DVDD or DGND if unused
• Leave the GPIO2/DRDY pin configured in the default state as a GPIO input and tie to either DVDD or DGND if both the DRDY output and GPIO2 are unused