Datasheet
Electrical characteristics STM32L431xx
106/200 DocID028800 Rev 1
t
WUSTOP0
Wake up time from Stop 0
mode to Run mode in
Flash
Range 1
Wakeup clock MSI = 48 MHz 3.8 5.7
µs
Wakeup clock HSI16 = 16 MHz 4.1 6.9
Range 2
Wakeup clock MSI = 24 MHz 4.07 6.2
Wakeup clock HSI16 = 16 MHz 4.1 6.8
Wakeup clock MSI = 4 MHz 8.45 11.8
Wake up time from Stop 0
mode to Run mode in
SRAM1
Range 1
Wakeup clock MSI = 48 MHz 1.5 2.9
Wakeup clock HSI16 = 16 MHz 2.4 2.76
Range 2
Wakeup clock MSI = 24 MHz 2.4 3.48
Wakeup clock HSI16 = 16 MHz 2.4 2.76
Wakeup clock MSI = 4 MHz 8.16 10.94
t
WUSTOP1
Wake up time from Stop 1
mode to Run in Flash
Range 1
Wakeup clock MSI = 48 MHz 6.34 7.86
µs
Wakeup clock HSI16 = 16 MHz 6.84 8.23
Range 2
Wakeup clock MSI = 24 MHz 6.74 8.1
Wakeup clock HSI16 = 16 MHz 6.89 8.21
Wakeup clock MSI = 4 MHz 10.47 12.1
Wake up time from Stop 1
mode to Run mode in
SRAM1
Range 1
Wakeup clock MSI = 48 MHz 4.7 5.97
Wakeup clock HSI16 = 16 MHz 5.9 6.92
Range 2
Wakeup clock MSI = 24 MHz 5.4 6.51
Wakeup clock HSI16 = 16 MHz 5.9 6.92
Wakeup clock MSI = 4 MHz 11.1 12.2
Wake up time from Stop 1
mode to Low-power run
mode in Flash
Regulator in
low-power
mode (LPR=1
in PWR_CR1)
Wakeup clock MSI = 2 MHz
16.4 17.73
Wake up time from Stop 1
mode to Low-power run
mode in SRAM1
17.3 18.82
Table 40. Low-power mode wakeup timings
(1)
(continued)
Symbol Parameter Conditions Typ Max Unit
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