STM32L431 datasheet(103/200 Pages) STMICROELECTRONICS

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STM32L431xx

Electrical characteristics

168

On-chip peripheral current consumption

The current consumption of the on-chip peripherals is given in Table 39. The MCU is placed

under the following conditions:

•

All I/O pins are in Analog mode

•

The given value is calculated by measuring the difference of the current consumptions:

–

when the peripheral is clocked on

–

when the peripheral is clocked off

•

Ambient operating temperature and supply voltage conditions summarized in Table 18:

Voltage characteristics

•

The power consumption of the digital part of the on-chip peripherals is given in

Table 39. The power consumption of the analog part of the peripherals (where

applicable) is indicated in each related section of the datasheet.

Table 39. Peripheral current consumption

Peripheral

Range 1

Range 2

Low-power run

and sleep

Unit

AHB

Bus Matrix(1)

3.2

2.9

3.1

µA/MHz

ADC independent clock domain

0.4

0.1

0.2

ADC clock domain

2.1

1.9

CRC

0.4

0.2

0.3

DMA1

1.4

1.3

1.4

DMA2

1.5

1.3

1.4

FLASH

6.2

5.2

5.8

GPIOA(2)

1.7

1.4

1.6

GPIOB(2))

1.6

1.3

1.6

GPIOC(2)

1.7

1.5

1.6

GPIOD(2)

1.8

1.6

1.7

GPIOE(2)

1.7

1.6

GPIOH(2)

0.6

0.5

QSPI

7.0

5.8

7.3

RNG independent clock domain

2.2

RNG clock domain

0.5

SRAM1

0.8

0.9

0.7

SRAM2

1.0

0.8

TSC

1.6

1.3

All AHB Peripherals

25.2

21.7

23.6

APB1

AHB to APB1 bridge(3)

0.9

0.7

0.9

CAN1

4.1

3.2

3.9

DAC1

2.4

1.8

2.2

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