STM32F373VC datasheet(61/137 Pages) STMICROELECTRONICS

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STM32F373xx

Electrical characteristics

114

6.3.5

Supply current characteristics

The current consumption is a function of several parameters and factors such as the

operating voltage, ambient temperature, I/O pin loading, device software configuration,

operating frequencies, I/O pin switching rate, program location in memory and executed

binary code.

The current consumption is measured as described in Figure 10: Current consumption

measurement scheme.

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 input mode with a static value at VDD or VSS (no load)

•

All peripherals are disabled except when explicitly mentioned

•

The Flash memory access time is adjusted to the fHCLK frequency (0 wait state from 0

to 24 MHz, 1 wait state from 24 to 48 MHz and 2 wait states from 48 MHz to 72 MHz)

•

Prefetch in ON (reminder: this bit must be set before clock setting and bus prescaling)

•

When the peripherals are enabled fAPB1 = fAHB/2 , fAPB2 = fAHB

•

When fHCLK > 8 MHz PLL is ON and PLL inputs is equal to HSI/2 = 4 MHz (if internal

clock is used) or HSE = 8 MHz (if HSE bypass mode is used)

The parameters given in Table 28 to Table 34 are derived from tests performed under

ambient temperature and supply voltage conditions summarized in Table 22.

Table 28. Typical and maximum current consumption from VDD supply at VDD = 3.6 V(1)

Symbol Parameter Conditions

fHCLK

All peripherals enabled

All peripherals disabled

Unit

Typ

Max @ TA(2)

Typ

Max @ TA(2)

25 °C

85 °C

105 °C

25 °C

85 °C 105 °C

IDD

Supply

current in

Run mode,

code

executing

from Flash

HSE

bypass,

PLL on

72 MHz 63.1

70.7

71.5

73.4

29.2

31.1

31.7

34.2

64 MHz 56.3

63.3

64.1

64.9

26.1

27.8

28.4

30.4

48 MHz 42.5

48.5

48.0

50.1

19.9

22.6

21.9

23.1

32 MHz 28.8

31.4

32.2

34.3

13.1

16.1

14.9

16.2

24 MHz 21.9

24.4

25.8

10.1

10.9

11.9

12.4

HSE

bypass,

PLL off

8 MHz

7.3

8.0

9.3

3.7

4.1

4.4

5.0

1 MHz

1.1

1.5

1.8

2.3

0.8

1.1

1.4

1.9

HSI clock,

PLL on

64 MHz 51.7

57.7

58.0

60.4

25.8

27.6

28.1

30.1

48 MHz 38.6

45.9

43.5

46.9

19.8

21.9

21.7

22.8

32 MHz 26.4

31.1

29.7

31.9

13.1

15.7

14.8

16.2

24 MHz 20.3

22.6

23.7

6.9

7.5

8.1

8.8

HSI clock,

PLL off

8 MHz

7.0

7.6

8.8

3.7

4.1

4.4

5.0

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