STM32C011F6U6 datasheet(56/94 Pages) STMICROELECTRONICS

56 / 94 page

Electrical characteristics

STM32C011x4/x6

56/94

DS13866 Rev 3

Figure 15. Typical application with a 32.768 kHz crystal

Note:

An external resistor is not required between OSC32_IN and OSC32_OUT and it is forbidden

to add one.

5.3.8

Internal clock source characteristics

The parameters given in Table 40 are derived from tests performed under ambient

temperature and supply voltage conditions summarized in Table 23: General operating

conditions. The provided curves are characterization results, not tested in production.

High-speed internal (HSI48) RC oscillator

MS30253V2

OSC32_IN

OSC32_OUT

Drive

programmable

amplifier

fLSE

32.768 kHz

resonator

Resonator with integrated

capacitors

CL1

CL2

Table 40. HSI48 oscillator characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSI48

HSI48 Frequency

VDD=3.0 V, TA=30 °C

47.92

48.40

MHz

∆Temp(HSI)(1)

HSI48 oscillator frequency

drift over temperature and

VDD full voltage range

TA= 0 to 85 °C

-1

TA= -40 to 125 °C

-2.5

TRIM(1)

HSI48 oscillator frequency

user trimming step

From code 127 to

128

-8

-6

-4

From code 63 to 64

From code 191 to

192

-5.8

-3.8

-1.8

For all other code

increments

0.2

0.3

0.4

DHSI48(2)

Duty cycle

tsu(HSI48)(2)

HSI48 oscillator start-up time

1.4

1.8

μs

tstab(HSI48)(2)

HSI48 oscillator stabilization

time

at 1% of target

frequency

-1.5

3.6

μs

IDD(HSI48)(1)

HSI48 oscillator power

consumption

525

570

μA

1. Based on characterization results, not tested in production

2. Specified by design – Not tested in production.

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