Hello,Just fount a bug on the LL driver of VREFBUF on STM32U575when you want to configure internal Vref to 2.5V and you use the nest function:LL_VREFBUF_SetVoltageScaling(LL_VREFBUF_VOLTAGE_SCALE3);where LL_VREFBUF_VOLTAGE_SCALE3  should set VRS bits...