STM32H723VG datasheet(111/227 Pages) STMICROELECTRONICS

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DS13313 Rev 2

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STM32H723xE/G

Electrical characteristics

208

4 MHz low-power internal RC oscillator (CSI)

Low-speed internal (LSI) RC oscillator

Table 36. CSI oscillator characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fCSI

CSI frequency

VDD=3.3 V, TJ=30 °C

3.96(2)

44.04(2)

MHz

TRIM

CSI trimming step

Trimming is not a

multiple of 16

0.40

0.75

Trimming is a multiple

of 32

−4.75

−2.75

0.75

Other trimming values

not multiple of 16

(excluding multiple of

32)

−0.43

0.00

0.75

DuCy(CSI)

Duty cycle

∆TEMP (CSI)

CSI oscillator frequency drift over

temperature

TJ = 0 to 85 °C

−3.7(3)

-4.5(3)

TJ = −40 to 125 °C

−11(3)

-7.5(3)

∆VDD (CSI)

CSI oscillator frequency drift over

VDD

VDD = 1.62 to 3.6 V

−

0.06

-0.06

tsu(CSI)

CSI oscillator startup time

µs

tstab(CSI)

CSI oscillator stabilization time

(to reach ± 3% of fCSI)

cycle

IDD(CSI)

CSI oscillator power consumption

µA

1. Guaranteed by design, unless otherwise specified.

2. Guaranteed by test in production.

3. Guaranteed by characterization results.

Table 37. LSI oscillator characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fLSI

LSI frequency

VDD = 3.3 V, TJ = 25 °C

31.4(1)

32.6(1)

kHz

TJ = –40 to 110 °C,

VDD = 1.62 to 3.6 V

29.76(2)

33.6(2)

TJ = –40 to 125 °C,

VDD = 1.62 to 3.6 V

29.4(2)

33.6(2)

tsu(LSI)(3) LSI oscillator startup time

130

µs

tstab(LSI)(3)

LSI oscillator stabilization time

(5% of final value)

120

170

IDD(LSI)(3) LSI oscillator power consumption

130

280

1. Guaranteed by test in production.

2. Guaranteed by characterization results.

3. Guaranteed by design.

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