STM32WLE4JC datasheet(76/146 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32WLE5/E4xx

76/146

DS13105 Rev 9

5.3.6

Embedded voltage reference

Parameters given in the table below are derived from tests performed under the ambient

temperature and supply voltage conditions summarized in Table 25: General operating

conditions.

VPVM3

VDDA peripheral voltage monitoring

Rising edge

1.61

1.65

1.69

Falling edge

1.6

1.64

1.68

Vhyst_PVM3

PVM3 hysteresis

IDD (PVM3)(2)

PVM3 consumption from VDD

µA

1. Continuous mode means Run and Sleep modes, or temperature sensor enable in LPRun and LPSleep modes.

2. Guaranteed by design.

3. BOR0 is enabled in all modes (except Shutdown) and its consumption is therefore included in the supply current

characteristics tables.

Table 34. Embedded reset and power-control block characteristics (continued)

Symbol

Parameter

Conditions(1)

Min

Typ

Max

Unit

Table 35. Embedded internal voltage reference

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VREFINT

Internal reference voltage

–40 °C < TJ < +105 °C

1.182 1.212

1.232

tS_vrefint (1)

ADC sampling time when reading

the internal reference voltage

-4(2)

µs

tstart_vrefint

Start time of reference voltage

buffer when ADC is enable

12(2)

IDD(VREFINTBUF)

VREFINT buffer consumption from

VDD when converted by ADC

12.5

20(2)

µA

∆VREFINT

Internal reference voltage spread

over the temperature range

VDD = 3.3 V

7.5(2)

TCoeff

Temperature coefficient

–40 °C < TJ < +105 °C

50(2)

ppm/°C

ACoeff

Long term stability

1000 hours, T = 25 °C

300

1000(2)

ppm

VDDCoeff

Voltage coefficient

3.0 V < VDD < 3.6 V

250

1200(2)

ppm/V

VREFINT_DIV1

1/4 reference voltage

VREFINT

VREFINT_DIV2

1/2 reference voltage

VREFINT_DIV3

3/4 reference voltage

1. The shortest sampling time can be determined in the application by multiple iterations.

2. Guaranteed by design.

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