STM32L062K8 datasheet(62/118 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L062x8

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DocID025937 Rev 8

6.3.5

Wakeup time from low-power mode

The wakeup times given in the following table are measured with the MSI or HSI16 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 either the MSI oscillator in the range configured before

entering Stop mode, the HSI16 or HSI16/4.

•

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 VDD supply

voltage conditions summarized in Table 21.

Table 35. Low-power mode wakeup timings

Symbol

Parameter

Conditions

Typ

Max

Unit

tWUSLEEP

Wakeup from Sleep mode

fHCLK = 32 MHz

Number

of clock

cycles

tWUSLEEP_LP

Wakeup from Low-power sleep mode,

fHCLK = 262 kHz

Flash memory enabled

fHCLK = 262 kHz

Flash memory switched OFF

910

tWUSTOP

Wakeup from Stop mode, regulator in Run

mode

fHCLK = fMSI = 4.2 MHz

5.0

µs

fHCLK = fHSI = 16 MHz

4.9

fHCLK = fHSI/4 = 4 MHz

8.0

Wakeup from Stop mode, regulator in low-

power mode

fHCLK = fMSI = 4.2 MHz

Voltage range 1

5.0

fHCLK = fMSI = 4.2 MHz

Voltage range 2

5.0

fHCLK = fMSI = 4.2 MHz

Voltage range 3

5.0

fHCLK = fMSI = 2.1 MHz

7.3

fHCLK = fMSI = 1.05 MHz

fHCLK = fMSI = 524 kHz

fHCLK = fMSI = 262 kHz

fHCLK = fMSI = 131 kHz

100

120

fHCLK = MSI = 65 kHz

190

260

fHCLK = fHSI = 16 MHz

4.9

fHCLK = fHSI/4 = 4 MHz

8.0

Wakeup from Stop mode, regulator in low-

power mode, code running from RAM

fHCLK = fHSI = 16 MHz

4.9

fHCLK = fHSI/4 = 4 MHz

7.9

fHCLK = fMSI = 4.2 MHz

4.7

tWUSTDBY

Wakeup from Standby mode, FWU bit = 1 fHCLK = MSI = 2.1 MHz

130

µs

Wakeup from Standby mode, FWU bit = 0 fHCLK = MSI = 2.1 MHz

2.2

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