STM32H745II datasheet(107/252 Pages) STMICROELECTRONICS

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DS12923 Rev 1

107/252

STM32H745xI/G

Electrical characteristics

228

device. It is not recommended to remove filtering capacitors to reduce PCB size or cost.

This might cause incorrect operation of the device.

6.1.7

Current consumption measurement

Figure 14. Current consumption measurement scheme

6.2

Absolute maximum ratings

Stresses above the absolute maximum ratings listed in Table 20: Voltage characteristics,

Table 21: Current characteristics, and Table 22: Thermal characteristics may cause

permanent damage to the device. These are stress ratings only and the functional operation

of the device at these conditions is not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

ai14126

VBAT

VDD

VDDA

IDD_VBAT

IDD

Table 20. Voltage characteristics (1)

1. All main power (VDD, VDDA, VDD33USB, VDDSMPS, VBAT) and ground (VSS, VSSA) pins must always be

connected to the external power supply, in the permitted range.

Symbols

Ratings

Min

Max

Unit

VDDX - VSS

External main supply voltage (including VDD,

VDDLDO, VDDSMPS, VDDA, VDD33USB, VBAT)

−0.3

4.0

VIN(2)

2. VIN maximum must always be respected. Refer to Table 68: I/O current injection susceptibility for the

maximum allowed injected current values.

Input voltage on FT_xxx pins

VSS−0.3

Min(VDD, VDDA,

VDD33USB, VBAT)

+4.0(3)(4)

3. This formula has to be applied on power supplies related to the IO structure described by the pin definition

table.

4. To sustain a voltage higher than 4V the internal pull-up/pull-down resistors must be disabled.

Input voltage on TT_xx pins

VSS-0.3

4.0

Input voltage on BOOT0 pin

VSS

9.0

Input voltage on any other pins

VSS-0.3

4.0

∆VDDX|

Variations between different VDDX power pins

of the same domain

-50

|VSSx-VSS| Variations between all the different ground pins

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