STM32F398VE datasheet(83/151 Pages) STMICROELECTRONICS

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STM32F398VE

Electrical characteristics

142

6.3.7

Internal clock source characteristics

The parameters given in Table 36 are derived from tests performed under ambient

temperature and supply voltage conditions summarized in Table 18.

High-speed internal (HSI) RC oscillator

Figure 15. HSI oscillator accuracy characterization results for soldered parts

Table 36. HSI oscillator characteristics(1)

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

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSI

Frequency

MHz

TRIM

HSI user trimming step

1(2)

2. Guaranteed by design, not tested in production.

DuCy(HSI)

Duty cycle

45(2)

-55(2)

ACCHSI

Accuracy of the HSI

oscillator

TA = -40 to 105°C

-2.8(3)

3. Data based on characterization results, not tested in production.

-3.8(3)

TA = -10 to 85°C

-1.9(3)

-2.3(3)

TA = 0 to 85°C

-1.9(3)

-2(3)

TA = 0 to 70°C

-1.3(3)

-2(3)

TA = 0 to 55°C

-1(3)

-2(3)

TA = 25°C(4)

4. Factory calibrated, parts not soldered.

-1

tSU(HSI)

HSI oscillator startup time

1(2)

-2(2)

μs

IDDA(HSI)

HSI oscillator power

consumption

-80

100(2)

μA

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