51.8 MCU Backup Power

Table 51-11. 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 VDDREG = 3.3V 0.5 1.1 µA
Note:
  1. Typical values at 25°C only.
  2. 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