STM32U073RCT3TR datasheet(78/146 Pages) STMICROELECTRONICS

78 / 146 page

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

NT jitter

Next transition jitter

Accumulated jitter on 28 cycles(3)

+/-0.15(1)

PT jitter

Paired transition jitter

Accumulated jitter on 56 cycles(3)

+/-0.25(1)

1. Specified by design, not tested in production.

2. Evaluated by characterization, not tested in production.

3. Jitter measurement are performed without clock source activated in parallel.

Figure 22. HSI48 frequency versus temperature

-6

-4

-2

-50

-30

-10

110

130

Avg

min

max

°C

Low-speed internal (LSI) RC oscillator

Table 55. LSI oscillator characteristics

Evaluated by characterization, not tested in production.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fLSI

LSI Frequency

VDD = 3.0 V, TA = 30 °C

31.04

32.96

kHz

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

29.5

tSU(LSI)(1)

LSI oscillator start-up time

130

μs

tSTAB(LSI)(1)

LSI oscillator stabilization time

5% of final frequency

125

180

μs

IDD(LSI)(1)

LSI oscillator power consumption

110

180

1. Specified by design, not tested in production.

6.3.9

PLL characteristics

The parameters given in Table 56. PLL characteristics are derived from tests performed under temperature and

VDD supply voltage conditions summarized in Section 6.3.1: General operating conditions.

Table 56. PLL characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fPLL_IN

PLL input clock frequency(1)

2.66

MHz

STM32U073x8/B/C

Electrical characteristics

DS14548 - Rev 2

page 78/146

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