STM32F051C8 datasheet(63/104 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F051x

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Doc ID 022265 Rev 3

6.3.8

PLL characteristics

The parameters given in Table 42 are derived from tests performed under ambient

temperature and supply voltage conditions summarized in Table 20.

6.3.9

Memory characteristics

Flash memory

The characteristics are given at TA = –40 to 105 °C unless otherwise specified.

Table 41.

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

Table 42.

PLL characteristics

Symbol

Parameter

Value

Unit

Min

Typ

Max

fPLL_IN

PLL input clock(1)

Take care to use the appropriate multiplier factors to obtain PLL input clock values compatible with the

range defined by fPLL_OUT.

1(2)

8.0

24(2)

MHz

PLL input clock duty cycle

40(2)

-60(2)

fPLL_OUT

PLL multiplier output clock

16(2)

-48

MHz

tLOCK

PLL lock time

200(2)

Guaranteed by design, not tested in production.

µs

JitterPLL

Cycle-to-cycle jitter

300(2)

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