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STM32F479AI bảng dữ liệu(PDF) 113 Page - STMicroelectronics

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STM32F479xx
Electrical characteristics
190
5.3.8
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.
Table 34. Low-power mode wakeup timings
Symbol
Parameter
Conditions
Typ(1) Max(1)
Unit
tWUSLEEP(2)
Wakeup from Sleep
-
5
6
CPU clock
cycles
tWUSTOP(2)
Wakeup from Stop mode
with MR/LP regulator in
normal mode
Main regulator is ON
12.9
13.0
µs
Main regulator is ON and Flash
memory in Deep power down mode
105
109
Low power regulator is ON
22
25.4
Low power regulator is ON and Flash
memory in Deep power down mode
114
121
tWUSTOP(2)
Wakeup from Stop mode
with MR/LP regulator in
Under-drive mode
Main regulator in under-drive mode
(Flash memory in Deep power-down
mode)
107
111
Low power regulator in under-drive
mode (Flash memory in Deep
power-down mode)
115
121
tWUSTDBY (2)(3) Wakeup from Standby mode
-
318
371
1. Based on test during characterization.
2. The wakeup times are measured from the wakeup event to the point in which the application code reads the first
3. tWUSTDBY maximum value is given at –40 °C.



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