52.8 MCU Backup Power

Table 52-11. CPU Backup Current Consumption DC Electrical Specifications
DC CHARACTERISTICS				Standard Operating Conditions: VDDREG = VDDIO = AVDD 1.71V to 3.63V (unless otherwise stated) Operating temperature: -40°C ≤ TA ≤ +85°C for Industrial
Param. No.	Symbol	Characteristics	Power Pin	Typ (1)	Max.	Units	Conditions
BPWR_1	IDD_BACKUP ⁽²⁾	MCU IDD in Backup mode powered from VDDIOx	VDDIO = AVDD = 3.3V	10	122	µA	RTC running on XOSC32K, TRAM enabled
BPWR_3	IDD_BACKUP ⁽²⁾	MCU IDD in Backup mode powered from VDDIOx	VDDREG = 3.3V	0.5	1.1	µA	RTC running on XOSC32K, TRAM enabled
Note: Typical values at 25°C only. Conditions: No peripheral modules are operating (i.e., all peripherals inactive) APB peripheral bus clocks: default settings after reset CMCC cache disabled MCU is running on Flash with automatic wait state VREG_USB disabled I/Os are inactive input mode with input trigger disabled All clock generation sources disabled unless otherwise specified WDT, CFD Clock Fail Detect disabled