RCAUSEReset Cause Address0x40000C00 Reset0x00 Accessread only7–6SYST5WDT4EXT3BOD12PLL2BOD331BOD120POR7 fields FieldBitsWhat it doesSYST6System Reset RequestWDT5Watchdog ResetEXT4External ResetBOD12PLL3Brown Out VDDPLL Detector ResetBOD332Brown Out VDD/AVDD Detector ResetBOD121Brown Out VDDCORE Detector ResetPOR0Power On Reset