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STM32L151x6/8/B, STM32L152x6/8/B
Electrical characteristics
103
6.3.5
Wakeup time from Low power mode
The wakeup times given in the following table are measured with the MSI RC oscillator. The
clock source used to wake up the device depends on the current operating mode:
•
Sleep mode: the clock source is the clock that was set before entering Sleep mode
•
Stop mode: the clock source is the MSI oscillator in the range configured before
entering Stop mode
•
Standby mode: the clock source is the MSI oscillator running at 2.1 MHz
All timings are derived from tests performed under ambient temperature and V
DD
supply
voltage conditions summarized in
Table 25. Low-power mode wakeup timings
Symbol
Parameter
Conditions
Typ Max
(1)
1. Based on characterization, not tested in production, unless otherwise specified
Unit
t
WUSLEEP
Wakeup from Sleep mode
f
HCLK
= 32 MHz
0.36
-
µs
t
WUSLEEP_LP
Wakeup from Low power
sleep mode
f
HCLK
= 262 kHz
f
HCLK
= 262 kHz
Flash enabled
32
-
f
HCLK
= 262 kHz
Flash switched OFF
34
-
t
WUSTOP
Wakeup from Stop mode,
regulator in Run mode
f
HCLK
= f
MSI
= 4.2 MHz
8.2
-
Wakeup from Stop mode,
regulator in low power
mode
f
HCLK
= f
MSI
= 4.2 MHz
Voltage Range 1 and 2
8.2
9.3
f
HCLK
= f
MSI
= 4.2 MHz
Voltage Range 3
7.8
11.2
f
HCLK
= f
MSI
= 2.1 MHz
10
12
f
HCLK
= f
MSI
= 1.05 MHz
15.5
20
f
HCLK
= f
MSI
= 524 kHz
29
35
f
HCLK
= f
MSI
= 262 kHz
53
63
f
HCLK
= f
MSI
= 131 kHz
105
118
f
HCLK
= MSI = 65 kHz
210
237
t
WUSTDBY
Wakeup from Standby
mode
FWU bit = 1
f
HCLK
= MSI = 2.1 MHz
50
103
Wakeup from Standby
mode
FWU bit = 0
f
HCLK
= MSI = 2.1 MHz
2.5
3.2
ms