STM32U385CG datasheet(100/224 Pages) STMICROELECTRONICS

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Symbol

Parameter

Conditions

Typ

Unit

Typ

Unit

Voltage scaling

Code

1.8 V

3 V

3.3 V

1.8 V

3 V

3.3 V

IDD (Run)

Supply

current in

Run mode

fHCLK = fMSI = 96 MHz,

all peripherals disable,

flash memory bank 2 in

powered down, all

SRAMs enabled

Range 1

Reduced

code

4.75

49.5

µA/

MHz

Coremark

4.55

4.60

47.4

47.9

SecureMark

4.95

51.6

Dhrystone

2.1

5.15

53.6

While(1)

3.4

35.4

Fibonacci

3.95

41.7

41.1

41.7

fHCLK = fMSI = 24 MHz,

ePOD booster disabled,

all peripherals disable,

flash memory bank 2 in

powered down, all

SRAMs enabled

Range 2

Reduced

code

1.15

1.2

47.9

µA/

MHz

Coremark

1.15

47.9

SecureMark

1.2

Dhrystone

2.1

1.25

52.1

While(1)

0.85

0.84

0.85

35.2

35.0

35.2

Fibonacci

0.99

41.3

41.5

Table 35. Typical current consumption in Run modes on LDO, with different codes running from flash memory in low-

power mode, ICACHE1 way, prefetch ON

The current consumption from SRAM is similar.

Symbol

Parameter

Conditions

Typ

Unit

Typ

Unit

Voltage scaling

Code

1.8 V

3 V

3.3 V

1.8 V

3 V

3.3 V

IDD (Run)

Supply

current in

Run mode

fHCLK = fMSI = 24 MHz,

ePOD booster disabled,

all peripherals disable,

flash memory bank 2 in

powered down, SRAM2

enabled, SRAM1 in

power down

Range 2

Reduced

code

1.15

47.9

µA/

MHz

Coremark

1.1

45.8

SecureMark

1.2

Dhrystone

2.1

1.25

52.1

While(1)

0.81

33.8

Fibonacci

0.96

Table 36. Typical current consumption in Run modes on SMPS, with different codes running from flash memory,

ICACHE ON (1-way), prefetch ON

The current consumption from SRAM is similar.

Symbol

Parameter

Conditions

Typ

Unit

Typ

Unit

Voltage scaling

Code

1.8 V

3 V

3.3 V

1.8 V

3 V

3.3 V

IDD (Run)

Supply

current in

Run mode

fHCLK = fMSI = 48 MHz,

all peripherals disable,

flash memory bank 2 in

powered down, all

SRAMs enabled

Range 2

Reduced

code

1.05

0.70

0.66

21.9

14.6

13.6

µA/

MHz

Coremark

0.66

0.62

20.8

13.8

12.9

SecureMark

1.10

0.72

0.68

22.9

14.1

Dhrystone

2.1

1.15

0.75

0.71

24.0

15.6

14.7

While(1)

0.74

0.49

0.46

15.4

10.1

9.5

Fibonacci

0.88

0.57

0.54

18.2

11.9

11.1

STM32U385xx

Electrical characteristics

DS14830 - Rev 2

page 100/224

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