STM32H7B3AI datasheet(81/238 Pages) STMICROELECTRONICS

81 / 238 page

100 nF filtering capacitor on each package pin.

A tolerance of +/- 20% is acceptable on decoupling capacitors.

Note:

Refer to Getting started with STM32H7A3/7B3 and STM32H7B0 hardware development(AN5307) for more

details.

Caution:

Each power supply pair (VDD/VSS, VDDA/VSSA ...) must be decoupled with filtering ceramic capacitors as shown

above. These capacitors must be placed as close as possible to, or below, the appropriate pins on the underside

of the PCB to ensure good operation of the 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 22. Current consumption measurement scheme

IDD_VBAT

LDO ON

VBAT

IDD

VDD

VDDA

VDDLDO

VDDMMC

IDD_VBAT

SMPS ON

VBAT

IDD

VDD

VDDA

VDDSMPS

VDDMMC

6.2

Absolute maximum ratings

Stresses above the absolute maximum ratings listed in Table 19. Voltage characteristics, Table 20. Current

characteristics, and Table 21. 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. Device mission profile (application

conditions) is compliant with JEDEC JESD47 Qualification Standard, extended mission profiles are available on

demand.

Table 19. Voltage characteristics

All main power (VDD, VDDA, VDD33USB, VDDMMC, 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, VDDMMC, VBAT, VREF+)

−0.3

4.0

VIN(1)

Input voltage on FT_xxx pins

VSS−0.3

Min(VDD, VDDA,

VDD33USB, VDDMMC,

VBAT) +4.0(2)(3)

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

|ΔVDDX|

Variations between different VDDX power pins of the same domain

STM32H7B3xI

Absolute maximum ratings

DS13139 - Rev 8

page 81/238

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