Electrical characteristics
STM32F031x4 STM32F031x6
All Run-mode current consumption measurements given in this section are performed with a
reduced code that gives a consumption equivalent to CoreMark code.
Typical and maximum current consumption
The MCU is placed under the following conditions:
• All I/O pins are in analog input mode
• All peripherals are disabled except when explicitly mentioned
• The Flash memory access time is adjusted to the fHCLK 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 fPCLK = fHCLK
The parameters given in Table 23Table 23 to Table 27 are derived from tests performed
under ambient temperature and supply voltage conditions summarized in Table 18: General
operating conditions.
Table 23. Typical and maximum current consumption from VDD at 3.6 V
All peripherals enabled
All peripherals disabled
Symbol Parameter Conditions fHCLK
Max @ TA(1)
Max @ TA(1)
Unit
Typ
Typ
25 °C 85 °C 105 °C
25 °C 85 °C 105 °C
HSE
48 MHz 18.4 20.0 20.1 20.4 11.4 12.5 12.5 12.6
bypass, 32 MHz 12.4 13.2 13.2 13.8 7.9 8.3 8.5
8.6
PLL on 24 MHz 9.9 10.7 10.7 11.0 6.2 6.8
7.0
7.0
Supply
current in
HSE
8 MHz 3.3 3.6 3.8
3.9 2.2 2.6 2.6
2.6
Run mode,
code
bypass,
PLL off
1 MHz 0.8
1.1
1.1
1.1 0.7 0.9 0.9
0.9
executing
48 MHz 18.9 20.9 21.1 21.5 11.7 12.3 12.9 13.1
from Flash
memory
HSI clock,
PLL on
32 MHz 12.8
13.7
14.2
14.8
8.0 8.7
9.1
9.1
24 MHz 9.7 10.4 11.2 11.3 6.1 6.5 6.7
6.9
HSI clock,
PLL off
8 MHz
3.5
4.0
4.0
4.1 2.4 2.6 2.7
2.7
IDD
HSE
48 MHz 17.3 19.7(2) 19.8 20.0(2) 10.3 11.2(2) 11.3 11.7(2) mA
bypass, 32 MHz 11.2 12.5 12.7 12.7 6.7 7.3 7.6
7.6
PLL on 24 MHz 8.9 10.0 10.1 10.2 5.1 5.5
5.8
5.9
Supply
HSE
8 MHz 2.8 3.1 3.3
3.4 1.7 2.0 2.1
2.1
current in bypass,
Run mode, PLL off 1 MHz 0.3 0.6 0.6
1.3 0.2 0.5 0.8
0.9
code
executing
48 MHz 17.4 19.7 20.0 20.2 10.4 11.2 11.3 11.8
from RAM
HSI clock,
PLL on
32 MHz 11.8
12.8
13.1
13.3
6.8 7.4
7.7
7.9
24 MHz 9.0 10.0 10.1 10.2 5.2 5.7 6.0
6.0
HSI clock,
PLL off
8 MHz
3.0
3.2
3.5
3.6 1.8 2.0 2.2
2.2
44/106
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