ST STM32H7B3I-DK User manual
Introduction
The STM32H7B3I-DK Discovery kit is a complete demonstration and development platform for STMicroelectronics' Arm®
Cortex®-M7 core-based STM32H7B3LIH6Q microcontroller. This microcontroller features four I2C interfaces, six SPIs with four
multiplexed full-duplex I2S interfaces, two SDMMC controllers, five USARTs, five UARTs, one ULPUART, one TTFD-CAN, one
CAN FD, two 16-bit ADCs, two 12-bit DACs, two SAIs, two Octo-SPI interfaces, two analog comparators, one SPDIF-RX,
DFSDM (8 channels / 8 filters), one USB HS OTG and one USB FS OTG, DCMI interface, FMC interface, TFT LCD controller
interface, JTAG, and SWD debugging support.
This STM32H7B3I-DK Discovery kit offers everything required for users to get started quickly and develop applications easily.
The hardware features on the board help to evaluate the following peripherals: USB HS OTG, microSD™ card, 8-bit camera
interface, audio DAC stereo with audio jack input and output, 128-Mbit SDRAM memory, 512-Mbit Octo-SPI Flash memory,
Wi‑Fi® module (802.11 b/g/n compliant), I2C extension connector, CAN FD, 20-pin microphone MEMS connector with DFSDM
interface, 4.3-inch TFT-LCD (480*272) using an RGB interface with a capacitive touch panel. The ARDUINO® Uno V3
compatible and STMod+ connectors allow easy connection of extension shields or daughterboards for specific applications.
The integrated STLINK-V3E provides an embedded in-circuit debugger and programmer for the STM32 MCU.
Figure 1. STM32H7B3I-DK top view Figure 2. STM32H7B3I-DK bottom view
Pictures are not contractual.
Discovery kit with STM32H7B3LI MCU
UM2569
User manual
UM2569 - Rev 6 - September 2021
For further information contact your local STMicroelectronics sales office. www.st.com
1Features
• STM32H7B3LIH6Q Arm®-based microcontroller featuring 2 Mbytes of Flash memory and 1.4 Mbyte of RAM
in BGA225 package
• 4.3" (480x272 pixels) TFT color LCD module including a capacitive touch panel with RGB interface
• Wi‑Fi® module compliant with 802.11 b/g/n
• USB OTG HS
• Audio codec
• 512-Mbit Octo-SPI NOR Flash memory
• 128-Mbit SDRAM
• 2 user LEDs
• User and Reset push-buttons
• Fanout daughterboard
• 1x FDCAN
• Board connectors:
– Camera (8 bit)
– USB with Micro-AB
– Stereo headset jack including analog microphone input
– Audio jack for external speakers
– microSD™ card
– TAG-Connect 10-pin footprint
– Arm® Cortex® 10-pin 1.27mm-pitch debug connector over STDC14 footprint
– ARDUINO® Uno V3 expansion connector
– STMod+ expansion connector
– Audio daughterboard expansion connector
– External I2C expansion connector
• Flexible power-supply options:
– ST-LINK USB VBUS, USB OTG HS connector, or external sources
• 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 STM32Cube 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
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2Ordering information
To order the STM32H7B3I-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
STM32H7B3I-DK
• MB1332
• MB1315(1)
• MB1280(2)
• MB1486(3)
STM32H7B3LIH6Q
1. LCD board.
2. Fanout board.
3. Wi-Fi® module.
2.1 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: STM32H7B3I-DK
STM32TT MCU series in STM32 Arm Cortex MCUs STM32H7 Series
XX MCU product line in the series STM32H7B3
YSTM32 Flash memory size:
• I for 2 Mbytes 2 Mbytes
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Ordering information
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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
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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
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Conventions
UM2569 - Rev 6 page 5/53
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:
• MB1315 TFT display daughterboard in the CN1 connector
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Delivery recommendations
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6Getting started
1. Ensure that the JP1 jumper is set to STLK.
2. Connect a Type-A to Micro-B USB cable from the STM32H7B3I-DK board (Connect USB STLINK CN14) to
a PC to power the board. Then LD5 (+5V) and LD4 (STLINK COM) light up.
3. Take advantage of three graphical stacks running on the same board with many featured applications for
each selected Sub-Demo:
– Menu launcher
– Audio player TGFX application (MP3 support)
– Clock and Weather with Alarm feature
– Video player TGFX application (enabled)
– TGFX Graphic demonstration
– STemWin Graphic demonstration
– EWZ Graphic demonstration
4. The demonstration application software as well as other software examples and applications for exploring
STM32H7 features are available from STM32H7B3I-DK.
Note: The audio and video player applications play audio and video files from the microSD™ card.
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Getting started
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7Hardware layout and configuration
The STM32H7B3I-DK Discovery kit is designed around the STM32H7B3LIH6Q target microcontroller packaged in
TFBGA225. The hardware block diagram, shown in Figure 3, illustrates the STM32H7B3LIH6Q connections with
the peripheral components. Figure 4 shows the location of the main components on the top side of the Discovery
board and Figure 5 the location of the main components on the bottom side of the Discovery board.
Figure 3. STM32H7B3I-DK hardware block diagram
GPIO
FMC128-Mbit SDRAM
SWD LCD and touch panel
OCSPI
Camera connector
Audio codec and
amplifier
microSDTM card
connector
3V3 / 1V8 Power supply
EXT_I2C connector
SDIO1
PWR
USART2
SPI2
USART1
RGB
DCMI
DFSDM
RTC / HSE
I2C4
UART4
SAI1
USB OTG connector
STLINK-V3E
32 KHz and
24 MHz crystals
512-Mbit Octo-SPI Flash
OTG HS
ARDUINO® connector
STMod+
TAG connector
SWD connector
Reset button
Audio connector
(5 MEMs microphones)
User LED
RSTn
STM32H7B3I
TFBGA225
Stereo jack with
microphone
Wi-Fi®
I2S6
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Hardware layout and configuration
UM2569 - Rev 6 page 8/53
Figure 4. STM32H7B3I-DK PCB layout (top view)
Audio
connector
(CN3)
STLINK-V3E
COM LED (LD4)
Switch
(SW1)
User
button
(B2)
TAG
connector
(CN12)
TFT LCD
connector
(CN1)
Reset
button
(B1)
STMod+
connector
(P1)
Figure 5. STM32H7B3I-DK PCB layout (bottom view)
Audio in
jack
(CN5)
ARDUINO®
connectors
(CN19 and CN20)
EXT_I2C
connector
(CN16)
USB OTG HS
connector
(CN15)
microSD™
card
(CN4)
ARDUINO®
connectors
(CN10 and CN11)
Camera
connector
(CN7)
Wi-Fi®
module
STLINK-V3E
USB connector
(CN14)
CAN-FD
connector
(CN21)
STM32H7B3I
MCU
(U15)
Power
selector
(JP1)
Audio out
jack
(CN6)
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Hardware layout and configuration
UM2569 - Rev 6 page 9/53
Figure 6 and Figure 7 provide the mechanical dimensions of the STM32H7B3I-DK board.
Figure 6. STM32H7B3I-DK board mechanical dimensions (top view, in millimeters)
75.00
161.00
Figure 7. STM32H7B3I-DK board mechanical dimensions (bottom view, in millimeters)
55.33
5.00
5.00 5.00
5.00
5.00
5.00
5.00
5.00
17.40
7.20
22.22
7.20
22.22
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Hardware layout and configuration
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