ST STM32H735G-DK Bedienungsanleitung

Introduction

The STM32H735G-DK Discovery kit is designed as a complete demonstration and development platform for STMicroelectronics

Arm® Cortex®-M7 core-based STM32H735IG microcontroller. This microcontroller features five I²C, six SPIs with four

multiplexed full-duplex I2S interfaces, five USARTs, five UARTs and one ULP UART, one TT/CAN FD, two CAN FDs, two 16-bit

ADCs and one 12-bit ADC, two 12-bit DACs, two SAIs, two Octo-SPI interfaces with OTFDEC crypto, FMC interface, two

SDMMC controllers, two analog comparators, one SPDIF-RX, DFSDM (8 channels / 4 filters), one USB OTG HS and one USB

OTG FS, Ethernet MAC, DCMI interface, TFT LCD controller interface, JTAG and SWD for debugging support.

The STM32H735G-DK Discovery kit offers everything required by the user to get started quickly and develop applications easily.

The hardware features on the board help to evaluate the following peripherals: USB OTG FS, 10/100-Mbit Ethernet, microSD™,

USART, SAI audio codec stereo with two audio jacks for input/output, ST MEMS digital microphone, 128-Mbit HyperRAM™

memory, 512-Mbit Octo-SPI NOR Flash memory, CAN FD, 20-pin microphone MEMS connector with DFSDM interface, 4.3-inch

RGB TFT-LCD display with capacitive touch panel. The ARDUINO® Uno V3 compatible connectors, Pmod™, and STMod+

connectors allow easy connection of extension shields or daughterboard for specific applications.

The integrated STLINK-V3E provides an embedded in-circuit debugger and programmer for the STM32 MCU.

Figure 1. STM32H735G-DK Discovery kit (top view) Figure 2. STM32H735G-DK Discovery kit (bottom view)

Pictures are not contractual.

Discovery kit with STM32H735IG MCU

UM2679

User manual

UM2679 - Rev 1 - April 2020

For further information contact your local STMicroelectronics sales office. www.st.com

1Features

• STM32H735IGK6U microcontroller featuring 1 Mbyte of Flash memory and 564 Kbytes of SRAM in

UFBGA176+25 package

• 4.3" TFT 480×272 pixels colored LCD module with capacitive touch panel and RGB interface

• Ethernet compliant with IEEE-802.3-2002 and PoE (Power over Ethernet)

• USB OTG FS

• SAI audio codec

• One ST-MEMS digital microphone

• 512-Mbit Octal-SPI NOR Flash memory

•128-Mbit HyperRAM™

• Two user LEDs

• User and reset push-buttons

• Fan-out daughterboard

• Three CAN FDs

• Board connectors:

– USB FS Micro-AB

– USB ST-LINK Micro-B

– Ethernet RJ45

– Stereo headset jack including analog microphone input

– Audio header for external speakers

– microSD™ card

– TAG connector 10-pin footprint

– SMA connector

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

– ARDUINO® Uno V3 expansion connector

– STMod+ expansion connector

– Pmod™ Type-2A and Type-4A expansion connector

– Audio MEMS daughterboard expansion connector

• Flexible power-supply options:

– STLINK-V3E USB connector

– USB OTG FS connector

– 5 V delivered by RJ45 (Power over Ethernet)

– 5 V delivered by ARDUINO®

– USB charger

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

COM port, and debug port

• Comprehensive free software libraries and examples available with the STM32CubeH7 MCU Package

• 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.

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Features

UM2679 - Rev 1 page 2/42

2Ordering information

To order the STM32H735G-DK Discovery kit, refer to Table 1. Additional information is available from the

datasheet and reference manual of the target STM32.

Table 1. Ordering information

Order code Board references Target STM32

STM32H735G-DK

• MB1520

• MB1315(1)

• MB1280(2)

STM32H735IGK6U

1. LCD board.

2. Fan-out board.

2.1 Product marking

Evaluation tools marked as “ES” or “E” are not yet qualified and therefore not ready to be used as reference

design or in production. Any consequences deriving from such usage will not be at ST charge. In no event, ST will

be liable for any customer usage of these engineering sample tools as reference designs or in production.

“E” or “ES” marking examples of location:

• On the targeted STM32 that is soldered on the board (For an illustration of STM32 marking, refer to the

STM32 datasheet “Package information” paragraph at the www.st.com website).

• Next to the evaluation tool ordering part number that is stuck or silk-screen printed on the board.

This board features a specific STM32 device version, which allows the operation of any bundled commercial

stack/library available. This STM32 device shows a "U" marking option at the end of the standard part number

and is not available for sales.

In order to use the same commercial stack in his application, a developer may need to purchase a part number

specific to this stack/library. The price of those part numbers includes the stack/library royalties.

2.2 Codification

The meaning of the codification is explained in Table 2. The order code is mentioned on a sticker placed on the

top or bottom side of the board.

Table 2. Codification explanation

STM32TTXXY-DK Description Example: STM32H735G-DK

STM32TT MCU series in STM32 32-bit Arm Cortex MCUs STM32H7 Series

XX MCU product line in the series STM32H725/735

YSTM32 Flash memory size:

• G for 1 Mbyte 1 Mbyte

DK DK for Discovery kit Discovery kit

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Ordering information

UM2679 - Rev 1 page 3/42

3Development environment

The STM32H735G-DK Discovery kit runs with the STM32H735IG 32-bit microcontroller based on the Arm®

Cortex®-M7 core.

3.1 System requirements

• Windows® OS (7, 8 and 10), Linux® 64-bit, or macOS®

• USB Type-A to Micro-B cable

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

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

UM2679 - Rev 1 page 4/42

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

UM2679

Conventions

UM2679 - Rev 1 page 5/42

5Delivery recommendations

Before the first use, make sure that no damage occurred to the board during shipment and no socketed

components are not firmly fixed in their sockets or loose in the plastic bag.

In particular, pay attention to the following component:

• TFT display MB1315 daughterboard in the CN19 connector.

For product information related to the STM32H735IGK6U microcontroller, visit the www.st.com website.

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Delivery recommendations

UM2679 - Rev 1 page 6/42

6Hardware layout and configuration

The STM32H735G-DK Discovery kit is designed around the STM32H735IGK6U target microcontroller, packaged

in TFBGA176+25. The hardware block diagram (Refer to Figure 3) illustrates the connections between the

STM32H735IGK6U microcontroller and the peripheral components. Figure 4 and Figure 5 help to locate these

features on the STM32H735G-DK Discovery kit. Figure 6 and Figure 7 give the mechanical dimensions of the

STM32H735G-DK board.

Figure 3. Hardware block diagram

GPIO

OCTOSPI2128-Mbit HyperRAMTM

SWD

4.3-inch RGB LCD

OCTOSPI1 Audio codec and

amplifier

microSDTM connector

PWR supply

SDIO1

PWR

UART7

USART3

LCD

DFSDM1

RTC / HSE

PDM

SAI1

STLINK-V3E

32.768 kHz crystal /

25 MHz oscillator

512-Mbit Octo-SPI Flash

Tag connector

SWD connector

USB connector

Audio connector

(5 MEMS microphones)

User LEDs

OTG FS

STM32H735IG

TFBGA176+25

Stereo jack (IN/OUT)

RMII

PoE (Power over

Ethernet)

Ethernet

I2C4

ARDUINO® connector

STMod+ connector

PmodTM connector

SPI5

UART1

CAN FD1/2/3 3x CAN FDsSAI4

MEMS microphone

(on-board)

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Hardware layout and configuration

UM2679 - Rev 1 page 7/42

Figure 4. STM32H735G-DK board layout (top view)

CN19: LCD connector

P1: PmodTM connector

P2: STMod+ connector

CN20: Audio connector

CN21: Tag connector

B1: Reset button

SW1: Switch

B2: User button

LD1/LD2: User LEDs

U33: Digital microphone

LD8: ARDUINO® LED

Figure 5. STM32H735G-DK board layout (bottom view)

CN3:

Ethernet

connector

CN6: DFU connector

U13: MCU STLINK-V3E

LD5: 5V Power LED

CN14: USB

OTG FS

connector

U6:

STM32H735IGK6U

U7:

HyperRAMTM

CN12:

Right speaker

connector

CN16/17/18:

CAN-FD

connectors

CN10:

Line-out

connector

CN11:

Line-in

connector

JP7:

Power

selector

CN15: USB

ST-LINK

connector

LD6: ST-LINK COM LED

CN1:

ADC_IN

connector

CN2:

microSDTM

connector

U10: Octo-SPI Flash

CN7: MIPI-10 connector

CN13:

Left speaker

connector

UM2679

Hardware layout and configuration

UM2679 - Rev 1 page 8/42

Figure 6. STM32H735G-DK mechanical dimensions (top view) in millimeters

159.00

88.00

Figure 7. STM32H735G-DK mechanical dimensions (bottom view) in millimeters

5.00

5.0033.005.00

5.00

21.25

5.00

20.20

21.25

5.00

20.20 31.30

5.00

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Hardware layout and configuration

UM2679 - Rev 1 page 9/42

6.1 Embedded STLINK-V3E

6.1.1 Description

There are two different ways to program and debug the onboard STM32 MCU:

• Using the embedded STLINK-V3E

• Using an external debug tool connected to CN7 MIPI-10 connector

The STLINK-V3E programming and debugging tool is integrated into the STM32H735G-DK Discovery kit.

The embedded STLINK-V3E supports only SWD and VCP for STM32 devices. For information about debugging

and programming features, refer to the technical note Overview of ST-LINK derivatives (TN1235), which describes

in detail all the STLINK-V3E features.

Features supported in STLINK-V3E:

• 5 V power supplied by the CN15 USB connector

• USB 2.0 high-speed-compatible interface

• JTAG and serial wire debugging (SWD) specific features:

– 3 V to 3.6 V application voltage on the JTAG/SWD interface and 5V tolerant inputs

– JTAG

– SWD and serial viewer (SWV) communication

• Direct firmware update feature (DFU) (CN6)

• STDC14 (MIPI10) compatible connector (CN7)

• LD6 status LED (COM) which blinks during communication with the PC

• LD3 fault red LED (OC) alerting on USB overcurrent request

• 5 V / 500 mA output power supply capability (U23) with current limitation and LED

• LD5 5 V power green LED (5V)

6.1.2 Drivers

Before connecting the STM32H735G-DK board to a Windows® PC via USB, the user must install a driver for the

STLINK-V3E (not required for Windows 10®). It is available on the www.st.com website.

In case the STM32H735G-DK board is connected to the PC before the driver is installed, some STM32H735G-DK

interfaces may be declared as “Unknown” in the PC device manager. In this case, the user must install the

dedicated driver files, and update the driver of the connected device from the device manager as shown in

Figure 8.

Note: Prefer using the USB Composite Device handle for a full recovery.

Figure 8. USB composite device

Note: 37xx:

• 374E for STLINK-V3E without bridges functions

• 374F for STLINK-V3E with bridges functions

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Embedded STLINK-V3E

UM2679 - Rev 1 page 10/42

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