STM32WB50CG datasheet(64/119 Pages) STMICROELECTRONICS

64 / 119 page

Electrical characteristics

STM32WB50CG STM32WB30CE

64/119

DS13047 Rev 5

6.3.7

Embedded voltage reference

The parameters given in Table 30 are derived from tests performed under the ambient

temperature and supply voltage conditions summarized in Table 20: General operating

conditions.

VPVD3

PVD threshold 3

Rising edge

2.56

2.61

2.66

Falling edge

2.47

2.52

2.57

VPVD4

PVD threshold 4

Rising edge

2.69

2.74

2.79

Falling edge

2.59

2.64

2.69

VPVD5

PVD threshold 5

Rising edge

2.85

2.91

2.96

Falling edge

2.75

2.81

2.86

VPVD6

PVD threshold 6

Rising edge

2.92

2.98

3.04

Falling edge

2.84

2.90

2.96

Vhyst_BORH0

Hysteresis voltage of BORH0

Hysteresis in

continuous mode

-20

Hysteresis in

other mode

-30

Vhyst_BOR_PVD

Hysteresis voltage of BORH (except

BORH0) and PVD

100

IDD (BOR_PVD)(2)

BOR(3) (except BOR0) and PVD

consumption from VDD

1.1

1.6

µA

1. Continuous mode means Run/Sleep modes, or temperature sensor enable in Low-power run/Low-power sleep 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 29. Embedded reset and power control block characteristics (continued)

Symbol

Parameter

Conditions(1)

Min

Typ

Max

Unit

Table 30. Embedded internal voltage reference

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VREFINT

Internal reference voltage

–10 °C < TA < +85 °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 V

7.5(2)

TCoeff

Temperature coefficient

–10 °C < TA < +85 °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

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