STM32U5A5QJ datasheet(192/382 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32U5Axxx

192/382

DS13543 Rev 1

Figure 26. VREFINT versus temperature

5.3.5

Supply current characteristics

The current consumption is a function of several parameters and factors such as the

operating voltage, ambient temperature, I/O pin loading, device software configuration,

operating frequencies, I/O pin switching rate, program location in memory and executed

binary code.

The current consumption is measured as described in Section 5.1.7: Current consumption

measurement.

IDD(VREFINTBUF)

(3)

VREFINT buffer consumption from

VDD when converted by the ADC

1.5

2.1

µA

∆VREFINT(4)

Internal reference voltage spread

over the temperature range

VDD = 3 V

11.5

TCoeff(4)

Average temperature coefficient

–40°C < TJ < +130 °C

125

ppm/°C

ACoeff(3)

Long term stability

1000 hours, TJ = 25 °C

400

1000

ppm

VDDCoeff(4)

Average voltage coefficient

3.0 V ≤ VDD ≤ 3.6 V

500

2900

ppm/V

VREFINT_DIV1(3) 1/4 reference voltage

VREFINT

VREFINT_DIV2(3) 1/2 reference voltage

VREFINT_DIV3(3) 3/4 reference voltage

1. VREFINT does not take into account package and soldering effects.

2. The shortest sampling time for the application can be determined by multiple iterations.

3. Specified by design. Not tested in production

4. Evaluated by characterization. Not tested in production.

Table 36. Embedded internal voltage reference (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

MSv69159V1

STM32U5A5QJ Datasheet(PDF) 192 Page - STMicroelectronics

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