STM32F101X6 datasheet(44/74 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F101xx

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Wakeup time from low power mode

The wakeup times given in Table 25 is measured on a wakeup phase with a 8-MHz HSI RC

oscillator. The clock source used to wake up the device depends from the current operating

mode:

●

Stop or Standby mode: the clock source is the RC oscillator

●

Sleep mode: the clock source is the clock that was set before entering Sleep mode.

All timings are derived from tests performed under ambient temperature and VDD supply

voltage conditions summarized in Table 7.

5.3.8

PLL characteristics

The parameters given in Table 26 are derived from tests performed under ambient

temperature and VDD supply voltage conditions summarized in Table 7.

Table 25.

Low-power mode wakeup timings

Symbol

Parameter

Conditions

Typ

Unit

tWUSLEEP

(1)

The wakeup times are measured from the wakeup event to the point at which the user application code

reads the first instruction.

Wakeup from Sleep mode

Wakeup on HSI RC clock

1.8

µs

tWUSTOP

(1)

Wakeup from Stop mode

(regulator in run mode)

HSI RC wakeup time = 2 µs

3.6

µs

Wakeup from Stop mode

(regulator in low-power mode)

HSI RC wakeup time = 2 µs,

Regulator wakeup from LP mode

time = 5 µs

5.4

tWUSTDBY

(1)

Wakeup from Standby mode

HSI RC wakeup time = 2 µs,

Regulator wakeup from power down

time = 38 µs

µs

Table 26.

PLL characteristics

Symbol

Parameter

Test

conditions

Value

Unit

Min

Typ

Max(1)

Data based on device characterization, not tested in production.

fPLL_IN

PLL input clock

8.0

MHz

PLL input clock duty cycle

fPLL_OUT

PLL multiplier output clock

MHz

tLOCK

PLL lock time

200

µs

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