Datasheet

Electrical characteristics STM32F21xxx
82/175 DocID17050 Rev 9
Table 23. Typical and maximum current consumptions in Standby mode
Symbol Parameter Conditions
Typ Max
(1)
Unit
T
A
= 25 °C T
A
= 85 °C T
A
= 105 °C
V
DD
=
1.8 V
V
DD
=
2.4 V
V
DD
=
3.3 V
V
DD
= 3.6 V
I
DD_STBY
Supply current
in Standby
mode
Backup SRAM ON, low-speed
oscillator and RTC ON
3.0 3.4 4.0 15.1 25.8
µA
Backup SRAM OFF, low-
speed oscillator and RTC ON
2.4 2.7 3.3 12.4 20.5
Backup SRAM ON, RTC OFF 2.4 2.6 3.0 12.5 24.8
Backup SRAM OFF, RTC
OFF
1.7 1.9 2.2 9.8 19.2
1. Based on characterization, not tested in production.
Table 24. Typical and maximum current consumptions in V
BAT
mode
Symbol Parameter Conditions
Typ Max
(1)
Unit
T
A
= 25 °C T
A
= 85 °C
T
A
=
105 °C
V
DD
=
1.8 V
V
DD
=
2.4 V
V
DD
=
3.3 V
V
DD
= 3.6 V
I
DD_VBAT
Backup
domain supply
current
Backup SRAM ON, low-speed
oscillator and RTC ON
1.29 1.42 1.68 12 19
µA
Backup SRAM OFF, low-speed
oscillator and RTC ON
0.62 0.73 0.96 8 10
Backup SRAM ON, RTC OFF 0.79 0.81 0.86 9 16
Backup SRAM OFF, RTC OFF 0.10 0.10 0.10 5 7
1. Based on characterization, not tested in production.