Now, MCU is able to go in stop mode if necessary when periph_pm feature is activated. Regarding LPSDSR bit that deactivates or not regulator in stop mode, it is up to the user to set/clear this bit. In order to save power, voltage regulator can be set in low power state during stop mode but it increases wakeup time. Signed-off-by: Aurelien Fillau <aurelien.fillau@gmail.com>