VCCBAT may draw higher current than the value estimated in the Intel® Arria® 10 and Intel® Cyclone® 10 GX FPGA Early Power Estimator (EPE) or Power Analyzer, if you power off VCC when VCCBAT remains powered on. The maximum VCCBAT current could be up to 120 μA.
If you use a battery to maintain volatile security keys when the system is not powered up, battery life may be shortened. Please contact your battery provider to evaluate the impact to the retention period of the battery used on your board.
There is no impact if you connect the VCCBAT pins to the on-board power rail.