Datasheet

Electrical characteristics STM32F20xxx
86/184 DS6329 Rev 16
On-chip peripheral current consumption
The current consumption of the on-chip peripherals is given in Table 26. The MCU is placed
under the following conditions:
• At startup, all I/O pins are configured as analog inputs by firmware.
• All peripherals are disabled unless otherwise mentioned
• The given value is calculated by measuring the current consumption
– with all peripherals clocked off
– with one peripheral clocked on (with only the clock applied)
• The code is running from Flash memory and the Flash memory access time is equal to
3 wait states at 120 MHz
• Prefetch and Cache ON
• When the peripherals are enabled, HCLK = 120MHz, f
PCLK1
= f
HCLK
/4, and
f
PCLK2
= f
HCLK
/2
• The typical values are obtained for V
DD
= 3.3 V and T
A
= 25 °C, unless otherwise
specified.
Table 24. 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. Guaranteed by characterization results, not tested in production.
Table 25. 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. Guaranteed by characterization results, not tested in production.
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