STM32G070CB datasheet(49/93 Pages) STMICROELECTRONICS

49 / 93 page

DS12766 Rev 2

49/93

STM32G070CB/KB/RB

Electrical characteristics

I/O dynamic current consumption

In addition to the internal peripheral current consumption measured previously (see

Table 30: Current consumption of peripherals, the I/Os used by an application also

contribute to the current consumption. When an I/O pin switches, it uses the current from

the I/O supply voltage to supply the I/O pin circuitry and to charge/discharge the capacitive

load (internal or external) connected to the pin:

where

ISW is the current sunk by a switching I/O to charge/discharge the capacitive load

VDDIO1 is the I/O supply voltage

fSW is the I/O switching frequency

C is the total capacitance seen by the I/O pin: C = CINT+ CEXT + CS

CS is the PCB board capacitance including the pad pin.

The test pin is configured in push-pull output mode and is toggled by software at a fixed

frequency.

On-chip peripheral current consumption

The current consumption of the on-chip peripherals is given in the following table. 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 17:

Voltage characteristics



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

following table. The power consumption of the analog part of the peripherals (where

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

ISW

VDDIO1 fSW C



Table 30. Current consumption of peripherals

Peripheral

Bus

Consumption in µA/MHz

Range 1

Range 2

Low-power run

and sleep

IOPORT Bus

IOPORT

1.0

0.7

0.5

GPIOA

IOPORT

3.4

2.8

3.0

GPIOB

IOPORT

3.1

2.6

2.5

GPIOC

IOPORT

2.9

2.5

3.0

GPIOD

IOPORT

1.8

1.5

GPIOF

IOPORT

0.7

0.6

1.0

Bus matrix

AHB

3.2

2.2

2.8

All AHB Peripherals

AHB

15.0

12.5

14.0

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