STM32F301C6 datasheet(72/135 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F301x6 STM32F301x8

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DocID025146 Rev 6

6.3.6

Wakeup time from low-power mode

The wakeup times given in Table 38 are measured starting from the wakeup event trigger up

to the first instruction executed by the CPU:

•

For Stop or Sleep mode: the wakeup event is WFE.

•

WKUP1 (PA0) pin is used to wakeup from Standby, Stop and Sleep modes.

All timings are derived from tests performed under ambient temperature and VDD supply

voltage conditions summarized in Table 23.

Table 38. Low-power mode wakeup timings

Symbol

Parameter

Conditions

Typ @VDD, VDD = VDDA

Max

Unit

2.0 V

2.4 V

2.7 V

3 V

3.3 V

3.6 V

tWUSTOP

Wakeup from

Stop mode

Regulator in

run mode

4.5

4.2

4.1

4.0

3.8

4.5

µs

Regulator in

low-power

mode

8.2

7.0

6.4

6.0

5.7

5.5

9.0

tWUSTANDBY(1)

Wakeup from

Standby mode

LSI and

IWDG OFF

72.8

63.4

59.2

56.1

53.1

51.3

103

tWUSLEEP

Wakeup from

Sleep mode

-6

CPU

clock

cycles

1. Guaranteed by characterization results.

Table 39. Wakeup time using USART(1)

Symbol

Parameter

Conditions

Typ

Max

Unit

tWUUSART

Wakeup time needed to calculate

the maximum USART baud rate

allowing to wakeup up from Stop

mode when the USART clock

source is HSI

Stop mode with main

regulator in low-power mode

13.125

µs

Stop mode with main

regulator in run mode

3.125

1. Guaranteed by design.

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