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 STM32H7B3LIH6QU 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
FD-CAN, 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, FD-CAN, 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 connectors and STMod+ connector 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 1 - December 2019
For further information contact your local STMicroelectronics sales office. www.st.com

1Features
• STM32H7B3LIH6QU 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™, Keil®, and GCC-
based IDEs
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)
STM32H7B3LIH6QU
1. LCD board.
2. Fanout board.
3. Wi-Fi® module.
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 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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3Development environment
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
• Keil® MDK-ARM (see note)
• IAR™ EWARM (see note)
• GCC-based IDEs
Note: On Windows® only.
3.3 Demonstration software
The demonstration software, included in the STM32Cube MCU Package corresponding to the onboard
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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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 should be 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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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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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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7Technology partners
MACRONIX:
512-Mbit Octo-SPI NOR Flash memory device, part number MX25LM51245GXDI00
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8Hardware layout and configuration
The STM32H7B3I-DK Discovery kit is designed around the STM32H7B3LIH6QU target microcontroller packaged
in TFBGA225. The hardware block diagram, shown in Figure 3, illustrates the STM32H7B3LIH6QU 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 shows 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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Figure 4. STM32H7B3I-DK PCB layout (top view)
CN3
Audio
connector
LD4
STLINK-V3E
COM LED
SW1
switch
B1
Reset
button
B2 User
button
CN12
TAG
connector
CN1
TFT LCD
connector
Figure 5. STM32H7B3I-DK PCB layout (bottom view)
CN5
Audio in
jack
CN19 and CN20
ARDUINO®
connectors
CN16
EXT_I2C
connector
CN15
USB OTG HS
connector
CN4
microSD™
card
CN10 and CN11
ARDUINO®
connectors
CN7
Camera
connector
P1
STMod+
connector
Wi-Fi®
module
CN14
STLINK-V3E
USB connector
CN21
FD-CAN
connector
U15
STM32H7B3I
MCU
JP1
Power
selector
CN6
Audio out
jack
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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)
Figure 7. STM32H7B3I-DK board mechanical dimensions (bottom view, in millimeters)
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8.1 Embedded STLINK-V3E
8.1.1 Description
There are two different ways to program or debug the onboard STM32 MCU:
• Using the embedded STLINK-V3E
• Using an external debug tool connected to CN8 MIPI-10 connector
The facility for programming and debugging the STM32H7B3LIH6QU is integrated into the STM32H7B3I-DK
board.
The STLINK-V3E makes the STM32H7B3I-DK board Mbed Enabled™.
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 on STLINK-V3E:
• 5V power supplied by USB connector (CN14)
• USB 2.0 high-speed-compatible interface
• JTAG/serial wire debugging (SWD) specific features:
– 3 to 3.6V application voltage on the JTAG/SWD interface and 5V tolerant inputs
– JTAG
– SWD and serial viewer (SWV) communication
• Direct firmware update feature (DFU) (CN17)
• STDC14 (MIPI10) compatible connector (CN8)
• Status COM LED (LD4) which blinks during communication with the PC
• Fault red LED (LD7) alerting on USB overcurrent request
• 5V/500mA output power supply capability (U24) with current limitation and LED
• Green LED ON: 5V enabled (LD5)
8.1.2 Drivers
Before connecting the STM32H7B3I-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 STM32H7B3I-DK board is connected to the PC before the driver is installed, some STM32H7B3I-DK
interfaces may be declared as Unknown in the PC device manager. In this case, the user must manually 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
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Note: 37xx:
• 374E for STLINK-V3E without bridges functions
• 374F for STLINK-V3E with bridges functions
8.1.3 STLINK-V3E firmware upgrade
The STLINK-V3E embeds a firmware upgrade mechanism for in-situ upgrades through the USB port. As the
firmware may evolve during the lifetime of the STLINK-V3E product (for example new functionalities, bug fixes,
support for new microcontroller families), it is recommended to visit the www.st.com website before starting to use
the STM32H7B3I-DK Discovery kit and periodically, to stay up-to-date with the latest firmware version.
8.1.4 Using an external debug tool to program and debug the onboard STM32
There are two basic ways to support an external debug tool:
1. Keep the embedded STLINK-V3E running. Power on the STLINK-V3E at first until the COM LED lights RED.
Then connect the external debug tool through CN8 STDC14/MIPI-10 debug connector.
2. Set the embedded STLINK-V3E in a high impedance state. When setting the jumper CN13 (STLK_RST)
ON, the embedded STLINK-V3E is in RESET state and all GPIOs are in high impedance. Then the user can
connect his external debug tool on the debug connector CN8.
Figure 9. Connecting an external debug tool to program the onboard STM32H7B3
CN13
STLK RST
CN14
STLINK-V3E
USB connector
JP1
Power
supply
selection
CN8
External
debug tool
connector
Table 4. CN8 MIPI-10 debug connector
MIPI-10 pin STDC14 pin CN8 Designation
- 1 NC Reserved
- 2 NC Reserved
1 3 T_VCC Target VCC
2 4 T_SWDIO Target SWDIO using SWD protocol or Target JTMS (T_JTMS) using JTAG
protocol
3 5 GND Ground
4 6 T_SWCLK Target SWCLK using SWD protocol or Target JCLK (T_JCLK) using JTAG
protocol
5 7 GND Ground
6 8 T_SWO Target SWO using SWD protocol or Target JTDO (T_JTMS) using JTAG
protocol
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MIPI-10 pin STDC14 pin CN8 Designation
7 9 T_JRCLK Not used by SWD protocol, Target JRCLK (T_JRCLK) using JTAG protocol,
only for specific use
8 10 T_JTDI Not used by SWD protocol, Target JTDI (T_JTDI) using JTAG protocol, only
for external tools
9 11 GNDDetect GND detect for plug indicator, used on SWD and JTAG neither
10 12 T_NRST Target NRST using SWD protocol or Target JTMS (T_JTMS) using JTAG
protocol
- 13 T_VCP_RX Target RX used for VCP (must be UART dedicated to bootloader)
- 14 T_VCP_TX Target TX used for VCP (must be UART dedicated to bootloader)
8.2 Power supply
The STM32H7B3I-DK Discovery kit is designed to be powered from 5 V DC power source.
One of the following 5 V DC power inputs can be used, upon an appropriate board configuration:
•A host PC connected to CN14 through a USB Micro-B cable with enumeration (default setting)
• An external charger connected to CN14 through a USB Micro-B cable (without enumeration)
• An external 7-12V power supply connected to CN19 pin 8 (ARDUINO®)
• A host PC connected to CN15 through a USB Micro-AB cable (5V_USB_HS)
• An external 5V power supply connected to CN2 (E5V)
The LD5 green LED turns ON when the voltage on the power line marked 5V is present. All supply lines required
for the operation of the components on the STM32H7B3I-DK are derived from that 5V line.
Note: The Discovery board must be powered by a power supply unit, or by auxiliary equipment complying with the
standard EN-60950-1: 2006+A11/2009, and must be Safety Extra Low Voltage (SELV) with limited power
capability.
8.2.1 Supplying the board through STLINK-V3E USB connector 5 V / 500 mA
The STM32H7B3I-DK Discovery kit can be powered from the STLINK-V3E connector CN14, by placing a jumper
between the pins 1-2 of JP1 “STLK”. This is the default setting.
If the USB enumeration succeeds, the 5V_ST_LINK power is enabled, by asserting the PWR_ENn signal from
STM32F723IEK6 “STLINK V3” (U18). This pin is connected to a power switch STMPS2151STR (U24), which
powers the board. The power switch STMPS2151STR (U24) features also a current limitation to protect the PC in
case of short-circuit on the board. If an overcurrent (more than 500mA) occurs onboard, the RED LED LD7 is lit.
The STM32H7B3I-DK board with its shield can be powered from the STLINK-V3E USB connector CN14, but only
ST-LINK circuit gets power before USB enumeration because the host PC only provides 100mA to the board at
that time.
During the USB enumeration, the STM32H7B3I-DK board asks for 500mA power to the host PC.
• If the host is able to provide the required power, the enumeration finishes by a SetConfiguration command
and then, the power switch STMPS2151STR is switched ON, the Green LED LD5 is turned ON, thus the
STM32H7B3I-DK board and its shield on it can consume 500mA current, but no more.
• If the host is not able to provide the requested current, the enumeration fails. Therefore, the
STMPS2151STR power switch (U24) remains OFF and the MCU part including the extension board is not
powered. As a consequence, the green LED LD5 remains turned OFF. In this case, it is mandatory to use an
external power supply.
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8.2.2 Supplying the STM32H7B3I-DK using the external power supply input from VIN (7 to 12 V,
800mA max)
It can happen that the STM32H7B3I-DK board requires more than 500 mA of supply current. In such a case, the
board can be supplied through pin8 (marked VIN on the board) of the CN19 ARDUINO® connector.
Note that using STLINK-V3E for debugging when powering the board with an external power supply, it is
important to power the board before connecting the host PC to CN14, which requires the following sequence to
be respected:
1. Set the jumper between the pins 7-8 of JP1 “ARD”.
2. Connect the external power source to pin8 of CN19.
3. Check that the green LED LD5 is turned ON.
4. Connect the host PC to USB connector CN14.
If this order is not respected, the board may be powered by VBUS first from STLINK, and the following risks may
be encountered:
1. If more than 500 mA current is needed by the board, the PC may be damaged or the current can be limited
by PC. As a consequence, the board is not powered correctly.
2. 500 mA is requested at the enumeration step, so there is a risk that the request is rejected and enumeration
does not succeed if PC cannot provide such current.
Table 5. External power sources: VIN (7 to 12 V)
Input
power
name
Connector
pins
Voltage
range
Maximum
current Limitation
VIN CN19 pin 8 7 to 12 V 800 mA
From 7 V to 12 V only and input current capability is linked to input
voltage:
• 800 mA input current when VIN = 7 V
• 450 mA input current when 7 V < VIN < 9 V
• 250 mA input current when 9 V < VIN < 12 V
8.2.3 Supplying the STM32H7B3I-DK using USB charger (5 V)
When the STM32H7B3I-DK board is power supplied by a USB charger through CN14 (see Table 6), the jumper
must be placed on pin 9-10 of JP1 “CHGR”.
Table 6. External power source: CHGR (5 V)
Input power name Connector pins Voltage range Maximum current
CHGR CN14 5 V -
8.2.4 Supplying the STM32H7B3I-DK using USB OTG HS connector (5 V / 500 mA)
When the STM32H7B3I-DK board is power supplied by the host PC through the CN15 USB OTG HS connector
(see Table 7), the jumper must be placed on pin 5-6 of JP1 “U5V”.
Table 7. External power source: U5V (5 V)
Input power name Connector pins Voltage range Maximum current
U5V CN15 5 V -
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8.2.5 MCU power supply – SMPS/LDO configuration
Figure 10. MCU power: SMPS/LDO
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The STM32H7B3I-DK board supports four “SMPS/LDO” configurations of STM32H7B3LIH6QU microcontroller,
given in the figures below.
Figure 11. Config1 - LDO only
Figure 12. Config2 - SMPS only (default)
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Figure 13. Config3 - SMPS and LDO cascaded
Figure 14. Config4 - External SMPS
To change the power supply configuration, some reworks are needed on the STM32H7B3I-DK board as detailed
in the table below.
Table 8. Internal SMPS / LDO and board configuration
Config1
SMPS OFF
LDO ON
Config2
SMPS ON
LDO OFF
(Default config)
Config3
(SMPS and LDO
cascaded)
SMPS ON
LDO ON
Config4
(External SMPS)
SMPS ON
LDO ON
SB2 ON - - -
R14 ON - - -
SB39 ON - - -
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Config1
SMPS OFF
LDO ON
Config2
SMPS ON
LDO OFF
(Default config)
Config3
(SMPS and LDO
cascaded)
SMPS ON
LDO ON
Config4
(External SMPS)
SMPS ON
LDO ON
R71 ON ON ON ON
SB37 - ON ON ON
SB38 - ON - -
C15 2.2 uF 100 nF 2.2 uF 2.2 uF
C27 2.2 uF 100 nF 2.2 uF 2.2 uF
R13 - ON - -
R12 - - ON ON
SB34 - - - ON
C97 - - - ON
Warning:
Board SMPS/LDO firmware PWR configuration must match with the hardware configuration.
If not, you face a deadlock: after the reset, STLINK cannot connect the target anymore.
The firmware PWR configuration corresponds with the following in the main.c:
In the function SystemClock_Config:
• In the case of “Direct SMPS” hardware configuration (default):
HAL_PWREx_ConfigSupply(PWR_DIRECT_SMPS_SUPPLY);
• In the case of “LDO” hardware configuration:
HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
If a deadlock is faced due to a mismatch between the hardware board setting and the firmware
setting (LDO/SMPS), the user can recover the board by doing the following:
• Power off the board.
• Change the SW1 switch position to "1".
• This changes the BOOT0 pin to 1 instead of 0 and thus the device boot address is changed
to boot address 1 making the bootloader starting in System memory, instead of starting the
firmware in the user Flash (Firmware that is setting a wrong LDO/SMPS configuration).
• Power on the board, and connect using STM32CubeProgrammer.
• Erase the user Flash.
• Power off the board and put back the switch SW1 to position "0".
• The board is now recovered and can proceed normally.
8.3 Measurement of MCU current consumption
The Jumper JP2 allows the current consumption of STM32H7B3LIH6QU to be measured directly by removing the
jumper and replace it with an external ammeter. If there is no ammeter, the STM32H7B3LIH6QU is not powered.
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8.4 Clock source
Three clock sources are available on the STM32H7B3I-DK board:
• 32.768 kHz crystal X1, for the STM32H7B3LIH6QU embedded RTC
• 24 MHz crystal X4, for the STM32H7B3LIH6QU system clock
• 25 MHz oscillator X2 for the STLINK-V3E
Note: By default, 24MHz clock of Camera and USB PHY is provided by the MCO1 clock signal.
8.5 Reset sources
The general reset of the STM32H7B3I-DK Discovery kit is active LOW. Sources of reset are:
• RESET button B1
• Embedded STLINK-V3E
• ARDUINO® Uno shield board through CN19 connector, pin 3
• MIPI10 and TAG connectors (Reset from debug tool)
The general reset is connected to the following peripheral reset functions:
• STM32H7B3LIH6QU MCU reset
• Octo-SPI Flash reset
• Camera reset
• LCD reset
•Wi‑Fi® module reset (optional)
8.6 Board functions
8.6.1 TFT color LCD 480x272 pixels
The STM32H7B3I-DK board includes a 4.3-inch LCD touchscreen board which is connected to the RGB interface
of the STM32H7B3LIH6QU through the CN1 50-pin connector. The MB1315 LCD board uses the RK043FN48H-
CT672B TFT LCD from Rocktech with a driving system, a white LED backlight, and a capacitive touch panel. The
touchscreen controller interfaces with the STM32H7B3LIH6QU via the bidirectional I2C4 bus, since the reset of
the TFT LCD is controlled by the NRST general reset. A U14 external SDRAM is also used to store display data.
8.6.2 USB OTG HS
The STM32H7B3I-DK board supports USB OTG high-speed communication via a CN15 USB Micro-AB connector
and a U20 Hi-Speed USB 2.0 external PHY. A U25 USB power switch is also connected on VBUS and provides
power to CN15. The green LED LD6 is lit in one of these cases:
• The power switch is ON and the STM32H7B3I-DK board works as a USB host
• VBUS is powered by another USB host when the STM32H7B3I-DK board works as a USB device.
The red LED LD8 is lit when an overcurrent occurs (Higher than 500 mA).
Note: The STM32H7B3I-DK board can be powered by the CN15 USB connector at 5 V DC with 500 mA current
limitation.
8.6.3 EXT_I2C
An EXT_I2C connector socket is available on the STM32H7B3I-DK board and offers the possibility to connect
external modules via the I2C4 bus. The EXT_RESET is managed by an I/O signal from the STM32H7B3LIH6QU
MCU.
8.6.4 microSD™ card
A CN4 slot for microSD™ card (SD 2.0 compliant) is available on STM32H7B3I-DK board and is connected to
SDOI1 interface of the STM32H7B3LIH6QU. The microSD™ card detection is managed by the uSD_Detect
signal. When a microSD™ card is inserted in the slot, the uSD_Detect signal level is LOW, otherwise, it is HIGH.
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