STM32WBA50KG datasheet(73/110 Pages) STMICROELECTRONICS

73 / 110 page

DS14688 Rev 1

73/110

STM32WBA50KG

Electrical characteristics

103

I/O dynamic current consumption

The I/Os used in application increase the consumption measured previously (see Table 44).

When an I/O pin switches, it uses the current from the I/O supply voltage to supply the pin

circuitry, and to charge/discharge the capacitive load (internal and external) connected to it:

where:

•

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

•

VDD 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

–CINT is the I/O pin capacitance

–CEXT is any connected external device pin capacitance

–CS is the PCB board capacitance

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

frequency.

On-chip peripheral current consumption

The power consumption of the digital part of the peripherals is given in Table 44of the

analog part (when applicable) is indicated in the related sections.

The MCU is put 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

•

The ambient operating temperature and supply voltage conditions summarized in

Table 26

Table 44. Peripheral typical dynamic current consumption(1)

Bus

Peripheral

Range 1

Range 2

Unit

AHB1

AHB1 bus

0.27

0.19

µA/MHz

SRAM1

0.29

0.22

TSC

1.25

0.92

CRC

0.30

0.22

RAMCFG

0.22

0.17

GPDMA1

1.48

1.10

ICACHE

0.46

0.34

FLASH interface

1.70

1.26

ISW

VDD fSW C

STM32WBA50KG Datasheet(PDF) 73 Page - STMicroelectronics

STM32WBA50KG Datasheet(HTML) 73 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL