STM32F050C4 datasheet(59/97 Pages) STMICROELECTRONICS

部件名	STM32F050C4

功能描述	Low- and medium-density advanced ARM-based 32-bit MCU with up to 32 Kbytes Flash, timers, ADC and comm. interfaces

PDF	97 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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59 / 97 page

STM32F050xx

Electrical characteristics

Doc ID 023683 Rev 1

59/97

Low-speed internal (LSI) RC oscillator

Wakeup time from low-power mode

The wakeup times given in Table 36 is measured on a wakeup phase with a 8-MHz HSI RC

oscillator. The event used to wake up the device depends from the current operating mode:

●

Stop or sleep mode: the wakeup event is WFE.

●

The wakeup pin used in sleep, stop and standby modes is PA0.

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

voltage conditions summarized in Table 15: General operating conditions.

Table 35.

LSI oscillator characteristics(1)

VDDA = 3.3 V, TA = –40 to 105 °C unless otherwise specified.

Symbol

Parameter

Min

Typ

Max

Unit

fLSI

Frequency

kHz

tsu(LSI)

(2)

Guaranteed by design, not tested in production.

LSI oscillator startup time

µs

IDDA(LSI)

(2)

LSI oscillator power consumption

0.75

1.2

µA

Table 36.

Low-power mode wakeup timings

Symbol

Parameter

Conditions

Typ @VDD

Max Unit

= 2.0 V

= 2.4 V

= 2.7 V

= 3 V

= 3.3 V

tWUSTOP

Wakeup from Stop

mode

Regulator in run

mode

4.24.2

4.2

µs

Regulator in low

power mode

8.05

7.05

6.6

6.27

6.05

tWUSTANDBY Wakeup from

Standby mode

60.35

55.6

53.5

52.02

50.96

tWUSLEEP

Wakeup from Sleep

mode

1.11.1

1.1

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