STM32H562II datasheet(135/270 Pages) STMICROELECTRONICS

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DS14258 Rev 5

135/270

STM32H562xx and STM32H563xx

Electrical characteristics

238

5.3.6

Embedded reference voltage

The parameters given in Table 26 are derived from tests performed under the ambient

temperature and supply voltage conditions summarized in Table 20.

5.3.7

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.

All the run-mode current consumption measurements given in this section are performed

with a CoreMark code.

Typical and maximum current consumption

The MCU is placed under the following conditions:

•

All I/O pins are in analog input mode.

Table 26. Embedded reference voltage

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VREFINT(1)

Internal reference voltage

-40 °C < TJ < +130 °C 1.180 1.216 1.255

tS_vrefint(2)(3)

ADC sampling time when reading the

internal reference voltage

-4.3

µs

tS_vbat

VBAT sampling time when reading the

internal VBAT voltage

tstart_vrefint(3)

Start time of reference voltage buffer

when the ADC is enabled

4.4

Irefbuf(3)

Reference buffer consumption for ADC VDD = 3.3 V

13.5

µA

∆VREFINT(3)

Internal reference voltage spread over

the temperature range

-40 °C < TJ < +130 °C

TCoeff

Average temperature coefficient

Average temperature

coefficient

-20

ppm/°C

VDDcoeff

Average voltage coefficient

3.0 V < VDD < 3.6 V

1370

ppm/V

VREFINT_DIV1(3) 1/4 reference voltage

-25-

%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.

Table 27. Internal reference voltage calibration value

Symbol

Parameter

Memory address

VREFINT_CAL

Raw data acquired at 30 °C, VDDA = 3.3 V

0x08FF F810 - 0x08FF F811

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