STM32U545NET3QTR datasheet(140/283 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32U545xx

140/283

DS14216 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.

Typical and maximum current consumption

The MCU is placed under the following conditions:

•

All I/O pins are in analog input mode.

•

All peripherals are disabled except when explicitly mentioned.

•

The flash memory access time is adjusted with the minimum wait-state number,

depending on the fHCLK frequency (refer to the tables “Number of wait states according

to CPU clock (HCLK) frequency” available in the product reference manual).

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

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