STM32H7B3AI datasheet(49/238 Pages) STMICROELECTRONICS

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Name

Abbreviation

Definition

I/O structure

USB option (supplied by

VDD33USB)

_h0 (1)

High-speed low voltage (mainly

SDMMC2 on VDDMMC power rail)

_h1(1)

High-speed low voltage (mainly

for OCTOSPI)

_h2(1)

High-speed low voltage (mainly

for FMC)

_h3(1)

High-speed low voltage

Secondary supply (supplied by

VDDMMC) (2)

Notes

Unless otherwise specified by a note, all I/Os are set as floating inputs

during and after reset.

Pin functions

Alternate functions

Functions selected through GPIOx_AFR registers

Additional functions

Functions directly selected/enabled through peripheral registers

1. Refer to SYSCFG_CCCSR register in the device reference manual for how to set a group of I/Os in High-speed low-voltage mode.

Depending on the chosen I/Os (for example OCTOSPI), it can belong to several groups of I/Os and several HSLVx bits need to be set (refer

to Table Pin/ball definition). Take care that the VDDIO_HSLV and/or VDDMMC_HSLV option bits must also be set.

2. Refer to the table Features and peripheral counts for the list of packages featuring a VDDMMC separate supply pad.

Table 7. STM32H7B3xI pin/ball definition

Pin/ball name(1) (2)

Pin name

(function

after reset)

type

I/O

structure

Alternate functions

Additional

functions

PE2

I/O

FT_h2

TRACECLK,

SAI1_CK1, SPI4_SCK,

SAI1_MCLK_A,

OCTOSPIM_P1_IO2,

USART10_RX,

FMC_A23, EVENTOUT

PE3

I/O

FT_h2

TRACED0,

TIM15_BKIN,

SAI1_SD_B,

USART10_TX,

FMC_A19, EVENTOUT

PE4

I/O

FT_h2

TRACED1, SAI1_D2,

DFSDM1_DATIN3,

TIM15_CH1N,

SPI4_SS, SAI1_FS_A,

FMC_A20, DCMI_D4/

PSSI_D4, LCD_B0,

EVENTOUT

D10

PE5

I/O

FT_h2

TRACED2, SAI1_CK2,

DFSDM1_CKIN3,

TIM15_CH1,

SPI4_MISO,

SAI1_SCK_A,

FMC_A21, DCMI_D6/

PSSI_D6, LCD_G0,

EVENTOUT

STM32H7B3xI

Pin descriptions

DS13139 - Rev 8

page 49/238

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