58.3.1 Backup Mode Current Consumption and Wake-Up Time

The Backup mode configurations and measurements are defined as follows:

  • Embedded slow clock RC oscillator is enabled
  • Supply Monitor on VDDIO is disabled
  • RTC is running
  • RTT is enabled on 1 Hz mode
  • BOD is disabled
  • One WKUPx enabled
  • Current measurement on AMP1 with and without the 1 Kbyte backup SRAM
  • Measurements are made at ambient temperature
Figure 58-5. Measurement Setup
Table 58-11. Worst Case Power Consumption for Backup Mode with 1 Kbyte BACKUP SRAM On
Total ConsumptionWorst Case ValueUnit
at 25°Cat 85°Cat 105°C
ConditionsAMP1AMP1AMP1
VDDIO = 3.6V8.44264µA
VDDIO = 3.3V83961µA
VDDIO = 3.0V7.63859µA
VDDIO = 2.5V5.23758µA
VDDIO = 1.7V3.83556µA
Table 58-12. Worst Case Power Consumption for Backup Mode with 1 Kbyte BACKUP SRAM Off
Total ConsumptionWorst Case ValueUnit
at 25°Cat 85°Cat 105°C
ConditionsAMP1AMP1AMP1
VDDIO = 3.6V5.116.424µA
VDDIO = 3.3V3.714.823µA
VDDIO = 3.0V3.413.222µA
VDDIO = 2.5V2.712.821µA
VDDIO = 1.7V1.39.618µA