STM32H533CE datasheet(123/231 Pages) STMICROELECTRONICS

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DS14539 Rev 1

123/231

STM32H533xx

Electrical characteristics

200

64 MHz high-speed internal RC oscillator (HSI)

ACCHSI48_REL(3)

Accuracy of the HSI48 oscillator over

temperature (reference is 30 °C)

TJ = -40 to 130 °C

-4.5

∆VDD(HSI48)

HSI48 oscillator frequency drift with

VDD (reference is 3.3 V)

VDD = 3.0 to 3.6 V

0.025

0.05

VDD = 1.71 to 3.6 V

0.05

0.1

tsu(HSI48)(3)

HSI48 oscillator start-up time

2.1

4.0

μs

IDD(HSI48)(3)

HSI48 oscillator power consumption

350

400

μA

NT jitter(3)

Next transition jitter accumulated

jitter on 28 cycles

±0.15

PT jitter(3)

Paired transition jitter accumulated

jitter on 56 cycles(4)

±0.25

1. Calibrated during manufacturing tests.

2. Evaluated by characterization - Not tested in production.

3. Specified by design - Not tested in production.

4. Jitter measurements are performed without clock sources activated in parallel.

Table 43. HSI48 oscillator characteristics (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 44. HSI oscillator characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSI

Frequency

VDD = 3.3 V, TJ = 30 °C

63.7(2) 64.0(2) 64.3(2) MHz

TRIM

User trimming step

Trimming is not a multiple of 32(3)

0.24

0.32

Trimming is 128, 256, and 384(3)

-5.2

-1.8

Trimming is 64, 192, 320, and 488(3)

-1.4

-0.8

Other trimmings are multiples of 32 (not

including multiples of 64 and 128)(3)

-0.6

-0.25

DuCy(HSI) Duty cycle

∆VDD(HSI)

Frequency drift with VDD

(reference is 3.3 V)

VDD= 1.71 to 3.6 V

-0.12

0.03

∆TEMP(HSI)

Frequency drift over

temperature (reference

is 64 MHz)

TJ= -20 to 105 °C

-1(4)

TJ= -40 to 130 °C

-2(4)

-1(4)

tsu(HSI)

Start-up time

1.4

2.0

μs

tstab(HSI) Stabilization time

At 1% of target frequency

μs

At 1% of target frequency

IDD(HSI)

Power consumption

300

450

μA

1. Specified by design - Not tested in production, unless otherwise specified.

2. Calibrated during manufacturing tests.

3. Trimming value of HSICAL[8:0.]

4. Guaranteed by characterization - Not tested n production.

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