Additional 2mA to 3mA leakage current from VDD
supply is expected when IRQZ pin is pulled high.
IRQZ pin should be left
floating or grounded on the board instead of connecting pull-up resistor to
avoid leakage current issue.
I2C polling based interrupt mechanism can be implemented in
host instead of HW pin based interrupt from device.
For HW pin based interrupt,
recommend to change IRQZ polarity to active high instead of the default
active low state. This can be done by writing ‘1’ to IRQZ_POL register in
IO_CFG_02 register in Page0 (Section 7.1).