STM32F401CB datasheet(73/134 Pages) STMICROELECTRONICS

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STM32F401xB STM32F401xC

Electrical characteristics

113

6.3.7

Wakeup time from low-power modes

The wakeup times given in Table 34 are measured starting from the wakeup event trigger up

to the first instruction executed by the CPU:

•

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

•

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

All timings are derived from tests performed under ambient temperature and VDD=3.3 V.

APB2

(up to 84MHz)

TIM1

5.71

µA/MHz

TIM9

2.86

TIM10

1.79

TIM11

2.02

ADC1(2)

2.98

SPI1

1.19

USART1

3.10

USART6

2.86

SDIO

5.95

SPI4

1.31

SYSCFG

0.71

1. I2SMOD bit set in SPI_I2SCFGR register, and then the I2SE bit set to enable I2S peripheral.

2. When the ADC is ON (ADON bit set in the ADC_CR2 register), add an additional power consumption of 1.6

mA for the analog part.

Table 33. Peripheral current consumption (continued)

Peripheral

IDD (typ)

Unit

Table 34. Low-power mode wakeup timings(1)

Symbol

Parameter

Min(1)

Typ(1)

Max(1)

Unit

tWUSLEEP(2)

Wakeup from Sleep mode

CPU

clock

cycle

tWUSTOP(2)

Wakeup from Stop mode, usage of main regulator

13.5

14.5

µs

Wakeup from Stop mode, usage of main regulator, Flash

memory in Deep power down mode

-105

111

Wakeup from Stop mode, regulator in low power mode

Wakeup from Stop mode, regulator in low power mode,

Flash memory in Deep power down mode

113

130

tWUSTDBY(2)(3)

Wakeup from Standby mode

314

407

µs

1. Guaranteed by characterization.

2. The wakeup times are measured from the wakeup event to the point in which the application code reads the first instruction.

3. tWUSTDBY maximum value is given at –40 °C.

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