STM32L082CZ datasheet(56/132 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L082xx

56/132

DS10688 Rev 7

6.3.3

Embedded internal reference voltage

The parameters given in Table 26 are based on characterization results, unless otherwise

specified.

VPVD6

PVD threshold 6

Falling edge

2.97

3.05

3.09

Rising edge

3.08

3.15

3.20

Vhyst

Hysteresis voltage

BOR0 threshold

All BOR and PVD thresholds

excepting BOR0

-100

1. Guaranteed by characterization results.

2. Valid for device version without BOR at power up. Please see option "D" in Ordering information scheme for more details.

Table 24. Embedded reset and power control block characteristics (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 25. Embedded internal reference voltage calibration values

Calibration value name

Description

Memory address

VREFINT_CAL

Raw data acquired at

temperature of 25 °C

VDDA= 3 V

0x1FF8 0078 - 0x1FF8 0079

Table 26. Embedded internal reference voltage(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VREFINT out(2)

Internal reference voltage

– 40 °C < TJ < +125 °C 1.202

1.224

1.242

TVREFINT

Internal reference startup time

VVREF_MEAS

VDDA and VREF+ voltage during

VREFINT factory measure

-2.99

3.01

AVREF_MEAS

Accuracy of factory-measured

VREFINT value(3)

Including uncertainties

due to ADC and

VDDA/VREF+ values

±5

TCoeff(4)

Temperature coefficient

–40 °C < TJ < +125 °C

100

ppm/°C

ACoeff(4)

Long-term stability

1000 hours, T= 25 °C

1000

ppm

VDDCoeff(4)

Voltage coefficient

3.0 V < VDDA < 3.6 V

2000

ppm/V

TS_vrefint(4)(5)

ADC sampling time when

reading the internal reference

voltage

-5

µs

TADC_BUF(4)

Startup time of reference

voltage buffer for ADC

µs

IBUF_ADC(4)

Consumption of reference

voltage buffer for ADC

13.5

µA

IVREF_OUT(4)

VREF_OUT output current(6)

µA

CVREF_OUT(4)

VREF_OUT output load

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