Datasheet

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STM32H743xI Electrical characteristics
196
6.3.7 Wakeup time from low-power modes
The wakeup times given in Table 40 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 (PC1) 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.
Table 40. Low-power mode wakeup timings
Symbol Parameter Conditions
Typ
(1)
Max
(1)
Unit
t
WUSLEEP
(2)
Wakeup from Sleep - 9 10
CPU
clock
cycles
t
WUSTOP
(2)
Wakeup from Stop
VOS3, HSI, Flash memory in normal mode 4.4 5.6
µs
VOS3, HSI, Flash memory in low-power
mode
12 15
VOS4, HSI, Flash memory in normal mode 15 20
VOS4, HSI, Flash memory in low-power
mode
23 28
VOS5, HSI, Flash memory in normal mode 30 71
VOS5, HSI, Flash memory in low-power
mode
38 47
VOS3, CSI, Flash memory in normal mode 27 37
VOS3, CSI, Flash memory in low power
mode
36 50
VOS4, CSI, Flash memory in normal mode 38 48
VOS4, CSI, Flash memory in low-power
mode
47 61
VOS5, CSI, Flash memory in normal mode 52 64
VOS5, CSI, Flash memory in low-power
mode
62 77
t
WUSTOP2
(2)
Wakeup from Stop,
clock kept running
VOS3, HSI, Flash memory in normal mode 2.6 3.4
VOS3, CSI, Flash memory in normal mode 26 36
t
WUSTDBY
(2)
Wakeup from Standby
mode
- 390 500
1. Guaranteed by characterization results.
2. The wakeup times are measured from the wakeup event to the point in which the application code reads the first instruction.
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