STM32MP151C datasheet(150/253 Pages) STMICROELECTRONICS

150 / 253 page

Electrical characteristics

STM32MP151C/F

150/253

DS12501 Rev 3

4 MHz low-power internal RC oscillator (CSI)

32 kHz low-speed internal (LSI) RC oscillator

6.3.11

PLL characteristics

The parameters given in Table 38, Table 39, Table 40 are derived from tests performed

under temperature and VDD supply voltage conditions summarized in Table 13: General

operating conditions.

Table 36. CSI oscillator characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fCSI(2)

CSI frequency

VDD = 3.3 V, TJ = 30 °C

3.98

4.02

MHz

TRIM

Trimming step

Trimming code is not a

multiple of 16

-0.85

Trimming code is a multiple of

-1.65

DuCy(CSI)

Duty Cycle

∆VDD (CSI) +

∆TEMP (CSI)(3)

CSI oscillator frequency drift over

VDD & drift over temperature

VDD = 1.71 to 3.6 V

TJ = 0 to 85 °C

±1.43

tsu(CSI)

CSI oscillator startup time

1.5

2.4

µs

tstab(CSI)

CSI oscillator stabilization time

(to reach ±5% of fCSI)

TJ = 0 to 85 °C

cycle

IDD(CSI)

CSI oscillator power consumption

µA

1. Guaranteed by design.

2. Guaranteed by test in production.

3. Guaranteed by characterization results.

Table 37. LSI oscillator characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fLSI

LSI frequency

TJ = 30 °C,(2)

VDD = 3.3 V

31.4

32.6

kHz

TJ = -40 to 125 °C,

VDD = 1.71 to 3.6 V

33.6

tsu(LSI)

LSI oscillator startup time (Time

between Enable rising and First

output clock edge.)

125

µs

tstab(LSI)

LSI oscillator stabilization time

(5% of final value)

110

170

IDD(LSI)

LSI oscillator power

consumption

120

230

1. Guaranteed by design.

2. Guaranteed by test in production.

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