Datasheet
Electrical characteristics STM32F051x4 STM32F051x6 STM32F051x8
50/121 DocID022265 Rev 6
Typical and maximum current consumption
The MCU is placed under the following conditions:
• All I/O pin
s are in analog input mode
• All peripherals are disabled except when explicitly mentioned
• The Flash memory access time is adjusted to the f
HCLK
frequency:
– 0 wait state and Prefetch OFF from 0 to 24 MHz
– 1 wait state and Prefetch ON above 24 MHz
• When the peripherals are enabled f
PCLK
= f
HCLK
The parameters given in Table 25 to Table 31 are derived from tests performed under
ambient temperature and supply voltage conditions summarized in Table 20: General
operating conditions.
Table 25. Typical and maximum current consumption from V
DD
at 3.6 V
Symbol Parameter Conditions f
HCLK
All peripherals enabled All peripherals disabled
Unit
Typ
Max @ T
A
(1)
Typ
Max @ T
A
(1)
25 °C 85 °C 105 °C 25 °C 85 °C 105 °C
I
DD
Supply
current in
Run mode,
code
executing
from Flash
memory
HSE
bypass,
PLL on
48 MHz 22.0 22.8 22.8 23.8 11.8 12.7 12.7 13.3
mA
32 MHz 15.0 15.5 15.5 16.0 7.6 8.7 8.7 9.0
24 MHz 12.2 13.2 13.2 13.6 7.2 7.9 7.9 8.1
HSE
bypass,
PLL off
8 MHz 4.4 5.2 5.2 5.4 2.7 2.9 2.9 3.0
1 MHz 1.0 1.3 1.3 1.4 0.7 0.9 0.9 0.9
HSI clock,
PLL on
48 MHz 22.0 22.8 22.8 23.8 11.8 12.7 12.7 13.3
32 MHz 15.0 15.5 15.5 16.0 7.6 8.7 8.7 9.0
24 MHz 12.2 13.2 13.2 13.6 7.2 7.9 7.9 8.1
HSI clock,
PLL off
8 MHz 4.4 5.2 5.2 5.4 2.7 2.9 2.9 3.0
Supply
current in
Run mode,
code
executing
from RAM
HSE
bypass,
PLL on
48 MHz 22.2 23.2
(2)
23.2 24.4
(2)
12.0 12.7
(2)
12.7 13.3
(2)
32 MHz 15.4 16.3 16.3 16.8 7.8 8.7 8.7 9.0
24 MHz 11.2 12.2 12.2 12.8 6.2 7.9 7.9 8.1
HSE
bypass,
PLL off
8 MHz 4.0 4.5 4.5 4.7 1.9 2.9 2.9 3.0
1 MHz 0.6 0.8 0.8 0.9 0.3 0.6 0.6 0.7
HSI clock,
PLL on
48 MHz 22.2 23.2 23.2 24.4 12.0 12.7 12.7 13.3
32 MHz 15.4 16.3 16.3 16.8 7.8 8.7 8.7 9.0
24 MHz 11.2 12.2 12.2 12.8 6.2 7.9 7.9 8.1
HSI clock,
PLL off
8 MHz 4.0 4.5 4.5 4.7 1.9 2.9 2.9 3.0
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