Hello all,
I am focusing on lowpower mode on STWINKT1B base on STM32L4R9xx. The aim is to go to STOP mode (STOP1), wakeup using RTC wakeup timer, collect some data on the µSD card and loop again. I am running on lipo battery (3.7V, 480mAh)
The issue is that I am consuming around ~55mA in run mode and ~25mA in STOP mode! I am using STLINK V3 Power and Cube Monitor power software to measure the consumption precisely.
My power supply is headed by STBC02 battery charger and my first idea was to disconnect any non-useful load by sending SW1 and SW2 command. I also disable any pins non useful and put all to analog mode. I even test a lot of stuff about SW1OA, SW1OB, SW2OA, SW2OB and cannot managed to find the issues. Please note that I am not focusing on the 2.7V LDO for microphone (it's not configurable to shutdown).
Please do not hesitate to give me any suggestion,
Regards,
Axel.
