67.9.1.2 Power Consumption

Backup mode configuration and measurements are defined as follows:

  • POR backup on VDDBU enabled
  • RTC running
  • Force wake-up (FWUP) enabled
  • Current measurement as per the following figure
Figure 67-39. Measurement on VDDBU
Table 67-58. Current Consumption in Backup Mode at TA = 105°C
Symbol Parameter Conditions Min Max Unit
IVDDBU Current consumption in Backup mode (VDDBU) VDDBU = 3.3V – 5 µA

The following figure shows the average Backup mode current consumption measured on a few typical devices.

Figure 67-40. Typical Current Consumption in Backup Mode