STM32F328C8 datasheet(69/109 Pages) STMICROELECTRONICS

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STM32F328C8

Electrical characteristics

100

Figure 15. HSI oscillator accuracy characterization results for soldered parts

Low-speed internal (LSI) RC oscillator

6.3.8

PLL characteristics

The parameters given in Table 38 are derived from tests performed under ambient

temperature and supply voltage conditions summarized in Table 18.

Table 37. LSI oscillator characteristics(1)

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)

2. Guaranteed by design, not tested in production.

LSI oscillator startup time

µs

IDD(LSI)(2) LSI oscillator power consumption

0.75

1.2

µA

Table 38. PLL characteristics

Symbol

Parameter

Value

Unit

Min.

Typ.

Max.

fPLL_IN

PLL input clock(1)

1. Take care of using the appropriate multiplier factors so as to have PLL input clock values compatible with

the range defined by fPLL_OUT.

1(2)

-24(2)

MHz

PLL input clock duty cycle

40(2)

-60(2)

fPLL_OUT

PLL multiplier output clock

16(2)

-72

MHz

tLOCK

PLL lock time

200(2)

µs

Jitter

Cycle-to-cycle jitter

300(2)

2. Guaranteed by design, not tested in production.

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