I have a STM32L073 on a custom application.
I'm having some strange behavior with open pins.
Particularly, PH1 and PC3 are floating, nothing is connected to them. When both are set as Digital In the current consumption is as follow:
|No pull||No pull||+50.0uA|
From the table, the first three results are reasonable, because even with pullups, the pins are floating so there's no extra consumption. However, it's weird that I get an extra 50uA when both pullups are deactivated.
I'm curious to understand what is the relation between the pins, only when both are at no pull I get extra consumption and they're floating. Also, if pins are analog, any combination yields +0.0uA.
I couldn't find proper pin diagrams to see how could this happen. Any input is welcomed.