Datasheet

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STM32F401xD STM32F401xE Electrical characteristics
114
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 V
DD
=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 I
DD
(typ) Unit
Table 34. Low-power mode wakeup timings
(1)
Symbol Parameter
Min
(1)
Typ
(1)
Max
(1)
Unit
t
WUSLEEP
(2)
Wakeup from Sleep mode - 4 6
CPU
clock
cycle
t
WUSTOP
(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
-105111
Wakeup from Stop mode, regulator in low power mode - 21 33
Wakeup from Stop mode, regulator in low power mode,
Flash memory in Deep power down mode
- 113 130
t
WUSTDBY
(2)(3)
Wakeup from Standby mode - 314 407 µs
1. Guaranteed by characterization, not tested in production.
2. The wakeup times are measured from the wakeup event to the point in which the application code reads the first instruction.
3. t
WUSTDBY
maximum value is given at –40 °C.
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