STM32WB35CCU6ATR datasheet(129/193 Pages) STMICROELECTRONICS

129 / 193 page

DS11929 Rev 10

129/193

STM32WB55xx STM32WB35xx

Electrical characteristics

169

6.3.12

PLL characteristics

The parameters given in Table 64 are derived from tests performed under temperature and

VDD supply voltage conditions summarized in Table 24: General operating conditions.

Table 63. LSI2 oscillator characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max Unit

fLSI2

LSI2 frequency

VDD = 3.0 V, TA = 30 °C

21.6

44.2

kHz

VDD = 1.62 to 3.6 V, TA = -40 to 125 °C 21.2

44.4

tSU(LSI2)(2) LSI2 oscillator start-up time

0.7

3.5

IDD(LSI2)(2)

LSI2 oscillator power

consumption

500 1180

1. Guaranteed by characterization results.

2. Guaranteed by design.

Table 64. PLL, PLLSAI1 characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fPLL_IN

PLL input clock(2)

-2.66

MHz

PLL input clock duty cycle

fPLL_P_OUT PLL multiplier output clock P

Voltage scaling Range 1

MHz

Voltage scaling Range 2

fPLL_Q_OUT PLL multiplier output clock Q

Voltage scaling Range 1

Voltage scaling Range 2

fPLL_R_OUT PLL multiplier output clock R

Voltage scaling Range 1

Voltage scaling Range 2

fVCO_OUT PLL VCO output

Voltage scaling Range 1

344

Voltage scaling Range 2

128

tLOCK

PLL lock time

μs

Jitter

RMS cycle-to-cycle jitter

System clock 64 MHz

-40

RMS period jitter

IDD(PLL)

PLL power consumption



on VDD(1)

VCO freq = 96 MHz

200

260

μA

VCO freq = 192 MHz

300

380

VCO freq = 344 MHz

520

650

1. Guaranteed by design.

2. Take care of using the appropriate division factor M to obtain the specified PLL input clock values. The M factor is shared

between the two PLLs.

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