STM32U545NET3QTR datasheet(196/283 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32U545xx

196/283

DS14216 Rev 1

fMSI (cont’d)

MSI frequency

after factory

calibration

VDD = 3 V

TJ = 30 °C

PLL mode

XTAL =

32.768 kHz

MSI range 12

(MSIRC3)

393

kHz

MSI range 13

196.6

MSI range 14

131

MSI range 15

98.3

DuCy(MSI)(3) Duty cycle

MSI range 0, 4, 8, or 12

MSI range 2, 6, 10, or 14

Other MSI ranges

TRIM

User trimming

step

0.4

∆TEMP(MSI)(4)

MSI oscillator

frequency drift

over

temperature

(reference is

30 °C)

MSI mode

TJ = –40 to 130 °C

-4

∆VDD(MSI)(4)

MSI oscillator

frequency drift

over VDD

(reference is 3V)

MSI mode

MSI range

0 to 3

1.58 ≤ VDD ≤ 3.6 V

-4

2.4 ≤ VDD ≤ 3.6 V

-1

MSI range

4 to 7

1.58 ≤ VDD ≤ 3.6 V

-3

2.4 ≤ VDD ≤ 3.6 V

-1

MSI range

8 to 11

1.58 ≤ VDD ≤ 3.6 V

-3

2.4 ≤ VDD ≤ 3.6 V

-1

MSI range

12 to 15

1.58 ≤ VDD ≤ 3.6 V

-3

2.4 ≤ VDD ≤ 3.6 V

-1

∆FSAMPLING

(MSI)

(3)(4)

MSI frequency

variation in

sampling mode

(MSIBIAS = 1)

MSI mode

TJ = –40 to 130 °C

0.2

jitter(MSI)(3)

RMS

cycle-to-cycle

jitter

PLL mode

MSI range 0

MSI range 4

160

MSI range 8

200

MSI range 12

1100

P jitter(MSI)(3) RMS period jitter PLL mode

MSI range 0

MSI range 4

130

MSI range 8

170

MSI range 12

800

Table 82. MSI oscillator characteristics(1) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

STM32U545NET3QTR Datasheet(PDF) 196 Page - STMicroelectronics

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