ST STM32H747I-DISCO User Manual

Hardware layout and configuration UM2411
16/61 UM2411 Rev 2
of its USB port when the excessive current demand from STM32H747I-DISCO is
detected. This causes an operating failure of STM32H747I-DISCO.
3. The host PC is not capable of supplying 300 mA (the enumeration fails). The STLINK-
V3E does not supply the rest of the STM32H747I-DISCO from its USB port VBUS line.
5.2.3 SMPS/LDO power supply
There are two possible solutions to provide power to MCU Vcore: SMPS or LDO. Power
figures in Run mode are significantly improved when Vcore logic power is supplied by the
internal DC/DC converter (SMPS). The default power supply for Vcore logic is SMPS. The
user need to apply some changes to switch to the LDO power supply:
• SMPS mode (default):
– SB2, SB11, SB19, SB46, SB48 mounted
– SB1, SB12, SB49 removed
• LDO mode:
– SB1, SB12, SB49 mounted
– SB2, SB11, SB19, SB46, SB48 removed
If coherent firmware and hardware configuration is not used for the core power SMPS/LDO
mode, the board is bricked and cannot start up. Re-solder the component according to the
steps below for recovery:
• Check the firmware configuration of the MCU core power mode
• Re-solder the solder bridges for the SMPS or LDO mode
• On power on, check that the STLINK can work properly
• When ST-LINK is connected, use the right SMPS/LDO configuration for the application

ST STM32H747I-DISCO Specifications

General

Brand	ST
Model	STM32H747I-DISCO
Category	Motherboard
Language	English

Summary

STM32H747I-DISCO Discovery Kit Introduction

STM32H747I-DISCO Key Features

STM32H747I-DISCO Ordering Information

STM32H747I-DISCO Development Environment

3.1 Development toolchains

Lists the supported development toolchains for the STM32H747I-DISCO.

STM32H747I-DISCO Hardware Layout and Configuration

5.1 STLINK-V3E

Describes the integrated STLINK-V3E for debugging and programming.

5.2 Power supply

Explains the 5V DC power inputs and configurations for the board.

5.3 Clock references

Details the available clock sources and their configurations for the microcontroller.

5.4 Reset Source

Lists the various sources that can trigger a reset on the discovery board.

5.5 Audio

Describes the audio codec and its connections for input and output.

5.6 USB OTG HS port

Covers the USB OTG HS capabilities and configurations for device and host modes.

5.7 Ethernet

Details the Ethernet communication features, PHY, and connector.

5.10 Virtual COM port

Describes the Virtual COM port functionality via USART1 and STLINK-V3E.

STM32H747I-DISCO Connectors

6.5 Arduino™ Uno V3 connectors CN5, CN6, CN8 and CN9

Explains Arduino Uno V3 compatible connectors for expansion.

STM32H747I-DISCO Schematic Diagrams

STM32H747I-DISCO I/O Assignment

STMod+ GPIO Sharing and Multiplexing