46.8 Backup Power

Table 46-11. MCU 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.SymbolCharacteristicsPower PinTyp (1)Max.UnitsConditions
BPWR_1IDD_BACKUP (2)MCU IDD in Backup mode powered from VDDIOx VDDIO = AVDD = 3.3V4.8(*)µARTC running on XOSC32K (32.768 KHz), TRAM enabled
BPWR_3VDDREG = 3.3V0.6(*)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
    • I/Os are inactive input mode with input trigger disabled
    • All clock generation sources disabled unless otherwise specified
    • WDT, CFD Clock Fail Detect disabled