ST STM32H745I-DISCO Bedienungsanleitung

Introduction

The STM32H745I-DISCO and STM32H750B-DK Discovery kits are complete demonstration and development platforms

for STMicroelectronics Arm® Cortex®-M7 and -M4 dual-core-based STM32H745XI (STM32H745XIH6 order code) and

STM32H750XB (STM32H750XBH6 order code) microcontrollers. Both devices feature four I2Cs, six SPIs with three multiplexed

simplex I2Ss, two SD/SDIO/DMMC interfaces, four USARTs, four UARTs, one LPUART, two CAN controllers, three 16-bit ADCs,

two 12-bit DACs, four SAIs, 8- to 14-bit digital camera interface, 1 Mbyte (STM32H745XIH6) or 128 Kbytes (STM32H750XBH6)

of internal SRAM and 2 Mbytes of Flash memory, a USB OTG HS and a USB OTG FS, an Ethernet MAC interface, an FMC

interface, a Quad-SPI interface, and SWD debugging support. The STM32H745I-DISCO and STM32H750B-DK Discovery kits

enable users to quickly get started and develop applications.

In addition, the STM32H745I-DISCO and STM32H750B-DK, shown in Figure 1 and Figure 2, can be used as a reference design

for user application prototyping before porting to the final product.

The full range of hardware features available on the board helps users improve application development by an evaluation

of almost all peripherals (such as USB OTG FS, Ethernet 10/100Mb/s, eMMC, USART, SAI Audio DAC stereo with audio

jack input and output, MEMS digital microphone, SDRAM, Quad-SPI Flash memory, and RGB LCD interface with capacitive

multi-touch panel). ARDUINO® Uno V3 connectors provide easy connection to extension shields or daughterboards for specific

applications.

STLINK-V3E is integrated into the board, as an embedded in-circuit debugger and programmer for the STM32 microcontroller

and the USB Virtual COM port bridge.

The STM32H745I-DISCO and STM32H750B-DK boards come with the STM32CubeH7 MCU package, which provides an

STM32 comprehensive software HAL library as well as various software examples.

Figure 1. STM32H745I-DISCO and STM32H750B-DK

boards (top view)

Figure 2. STM32H745I-DISCO and STM32H750B-DK

boards (bottom view)

Pictures are not contractual. PCB colors may differ.

Discovery kits with STM32H745XI and STM32H750XB microcontrollers

UM2488

User manual

UM2488 - Rev 8 - September 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

1Features

• Arm® Cortex® core-based microcontroller with 2 Mbytes (STM32H745XIH6) or 128 Kbytes

(STM32H750XBH6) of Flash memory and 1 Mbyte of RAM, in TFBGA240+25 package

• 4.3” RGB interface LCD with touch panel connector

• Ethernet compliant with IEEE-802.3-2002, and PoE

• USB OTG FS with Micro-AB connector

• SAI audio codec

• One ST-MEMS digital microphone

• 2× 512-Mbit Quad-SPI NOR Flash memory

• 128-Mbit SDRAM

• 4-Gbyte on-board eMMC

• 1 user and reset push-button

• Fanout daughterboard

• 2× CAN FDs

• Board connectors:

– USB FS Micro-AB connectors

– ST-LINK Micro-B USB connector

– USB power Micro-B connector

– Ethernet RJ45

– Stereo headset jack including analog microphone input

– Audio header for external speakers

– Tag-Connect (TAG) 10-pin footprint

– Arm® Cortex® 10-pin 1.27 mm pitch debug connector over STDC14 footprint

– ARDUINO® Uno V3 expansion connectors

– STMod+

• Flexible power-supply options:

– STLINK-V3 USB connector, USB FS connector

– 5 V delivered by RJ45 (Power over Ethernet)

– 5 V delivered by ARDUINO® or external connector

– USB charger

– USB power

• On-board STLINK-V3E debugger/programmer with USB re-enumeration capability: mass storage, Virtual

COM port, and debug port

• Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded

Workbench®, MDK-ARM, and STM32CubeIDE

Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

UM2488

Features

UM2488 - Rev 8 page 2/39

2Ordering information

To order the STM32H745I-DISCO and STM32H750B-DK Discovery kits, refer to Table 1. Additional information is

available from the datasheet and reference manual of the target STM32.

Table 1. List of available products

Order code Board reference Target STM32

STM32H745I-DISCO MB1381 STM32H745XIH6

STM32H750B-DK STM32H750XBH6

2.1 Codification

The codification composition is detailed in Table 2.

Table 2. Codification explanation

STM32H7XXY-DISCO

STM32H7XXY-DK Description Example: STM32H745I-DISCO

STM32H7 MCU series in STM32 32-bit Arm Cortex MCUs STM32H7 Series

XX MCU product line in the series STM32H745

STM32 Flash memory size:

• B for 128 Kbytes

• I for 2 Mbytes

2 Mbytes

DISCO / DK Discovery kit Discovery kit

UM2488

Ordering information

UM2488 - Rev 8 page 3/39

3Development environment

3.1 System requirements

• Multi‑OS support: Windows® 10, Linux® 64-bit, or macOS®

• USB Type-A or USB Type-C® to Micro-B cable

Note: macOS® is a trademark of Apple Inc. registered in the U.S. and other countries.

Linux® is a registered trademark of Linus Torvalds.

All other trademarks are the property of their respective owners.

3.2 Development toolchains

• IAR Systems® - IAR Embedded Workbench®(1)

• Keil® - MDK-ARM(1)

• STMicroelectronics - STM32CubeIDE

1. On Windows® only.

3.3 Demonstration software

The demonstration software, included in the STM32Cube MCU Package corresponding to the on-board

microcontroller, is preloaded in the STM32 Flash memory for easy demonstration of the device peripherals in

standalone mode. The latest versions of the demonstration source code and associated documentation can be

downloaded from www.st.com.

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Development environment

UM2488 - Rev 8 page 4/39

4Conventions

Table 3 provides the conventions used for the ON and OFF settings in the present document.

Table 3. ON/OFF convention

Convention Definition

Jumper JPx ON Jumper fitted

Jumper JPx OFF Jumper not fitted

Jumper JPx [1-2] Jumper fitted between Pin 1 and Pin 2

Solder bridge SBx ON SBx connections closed by 0 Ω resistor

Solder bridge SBx OFF SBx connections left open

Resistor Rx ON Resistor soldered

Resistor Rx OFF Resistor not soldered

UM2488

Conventions

UM2488 - Rev 8 page 5/39

5Delivery recommendations

Before first use, check the board for any damage that might have occurred during shipment, that all socketed

components are firmly fixed in their sockets and that none are loose in the plastic bag.

UM2488

Delivery recommendations

UM2488 - Rev 8 page 6/39

6Hardware layout and configuration

The STM32H745I-DISCO and STM32H750B-DK Discovery kits are designed around the STM32H745XIH6 and

STM32H750XBH6 microcontrollers, respectively. Both microcontrollers are packaged in TFBGA240+25. The

hardware block diagram (see Figure 3) illustrates the connection between the microcontroller and the peripherals

(SDRAM, eMMC, Quad-SPI Flash memory, CAN FD (FDCAN), LCD RGB connector, USB OTG connectors,

UART, Ethernet, Audio, TAG connector, STDC connector, ARDUINO® Uno shields and embedded ST-LINK).

Figure 4 and Figure 5 help to locate these features on the STM32H745I-DISCO and STM32H750B-DK boards.

Figure 3. Hardware block diagram

STM32H745XI / STM32H750XB

in TFGA240+25

RTC

UART3

FMC

OTG

FDCAN1/2

SDMMC1

QSPI

PWR

32.768 kHz crystal

STLINK-V3E

128-Mbit SDRAM

2x FDCANs

4-Gbyte eMMC

2x512-Mbit Quad-SPI

Flash memory

Power supply

MII

I2C4

TAG connector SWD

STDC connector

LCD

SAI2

PDM

SPI2

UART2

UART1

4.3-inch RGB LCD

Audio codec

ARDUINO® connector

STMod+ connector

PoE

Ethernet

USB connector

UM2488

Hardware layout and configuration

UM2488 - Rev 8 page 7/39

6.1 STM32H745I-DISCO and STM32H750B-DK layout

Figure 4. STM32H745I-DISCO and STM32H750B-DK Discovery board top layout

User button

(B1)

STMod+ connector

(P1)

TAG connector

(CN16)

Reset button

(B2)

Ethernet connector

(CN1)

User LEDs

(LD6/LD7/LD8)

Power header

(JP8)

RGB LCD connector

(U33)

MEMS microphone

(U34)

UM2488

STM32H745I-DISCO and STM32H750B-DK layout

UM2488 - Rev 8 page 8/39

Figure 5. STM32H745I-DISCO and STM32H750B-DK Discovery board bottom layout

Ethernet connector

(CN1)

MCU

(U6)

Q-SPI

(U1, U2)

SDRAM

(U7)

STMod+

connector

(P1)

STDC14

connector

(CN14)

Audio codec (U15)

Line out connector (CN9)

FDCANs (U21, U22)

eMMC (U11)

USB OTG FS connector

(CN13)

ARDUINO® connectors

(CN3, CN7)

Power header (JP8)

STLK USB connector

(CN14)

USB power connector

(CN15)

ARDUINO® connectors

(CN2, CN6)

Line in connector (CN8)

UM2488

STM32H745I-DISCO and STM32H750B-DK layout

UM2488 - Rev 8 page 9/39

6.2 STM32H745I-DISCO and STM32H750B-DK mechanical drawing

Figure 6 shows the mechanical dimensions of the STM32H745I-DISCO and STM32H750B-DK boards.

Figure 6. STM32H745I-DISCO and STM32H750B-DK Discovery board mechanical drawing (bottom view)

6.3 Embedded STLINK-V3E

The STLINK-V3E programming and debugging tool is integrated into the STM32H745I-DISCO and

STM32H750B-DK Discovery kits. It supports:

• USB software re-enumeration

• Virtual COM port interface on USB

• Mass storage interface on USB

• USB power management request for more than 100 mA power on USB

The USB connector (CN14) can be used to power the STM32H745I-DISCO and STM32H750B-DK regardless

of the STLINK-V3E facility used for debugging or programming the STM32H745XIH6 and STM32H750XBH6.

This holds also when the STLINK-V3E standalone tool is connected to CN4 or CN16 connector and used for

debugging or programming the STM32H745XIH6 and STM32H750XBH6. Section 6.4 Power supply provides

more details about STM32H745I-DISCO and STM32H750B-DK powering.

Refer to www.st.com for details about STLINK-V3E.

UM2488

STM32H745I-DISCO and STM32H750B-DK mechanical drawing

UM2488 - Rev 8 page 10/39

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