STM32F334X4 datasheet(68/115 Pages) STMICROELECTRONICS

부품명	STM32F334X4

상세설명	ARMCortex-M4 32b MCUFPU,up to 64KB Flash,16KB SRAM, 2 ADCs,3 DACs,3 comp.,op-amp, 217ps 10-ch (HRTIM1)

PDF	115 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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68 / 115 page

Electrical characteristics

STM32F334x4 STM32F334x6 STM32F334x8

68/115

DocID025409 Rev 5

Figure 16. Typical application with a 32.768 kHz crystal

Note:

An external resistor is not required between OSC32_IN and OSC32_OUT and it is forbidden

to add one.

6.3.8

Internal clock source characteristics

The parameters given in Table 40 are derived from tests performed under ambient

temperature and supply voltage conditions summarized in Table 19.

High-speed internal (HSI) RC oscillator

Table 40. 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 (factory

calibrated)

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

100(2)

µA

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