I am using stm32l431cbt6.when I use the Vbat(3.0V) and close the vdd,I Measure the current is 0.4ma.I see datasheet say i = 200na.I wonder if any software configuration is missing
I confirm that all VDD VSS have been linked. The following is the schematic diagram. At present, when I use VBAT power supply, I find that there is 0.4V in the 5V power supply, which can exclude the peripheral circuit string. I want to know whether t...
I se 5V adaptive power supply.A simple calendar application.I need to be able to use RTC when someone removes the 5V adapter.I want to know why the current is much higher than the specification when VDD is disconnected and only VBAT is powered
