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STM32H750B-DK
User Manual
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ST STM32H745I-DISCO, STM32H750B-DK User Manual

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Page 1
UM2488
User manual
Discovery kits with STM32H745XI and STM32H750XB microcontrollers
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.
Pictures are not contractual. PCB colors may differ.
STM32H745I-DISCO and STM32H750B-DK
boards (top view)
Figure 2. STM32H745I-DISCO and STM32H750B-DK
boards (bottom view)
UM2488 - Rev 4 - September 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
Page 2

1 Features

• 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 x 512-Mbit Quad-SPI NOR Flash memory
• 128-Mbit SDRAM
• 4-Gbyte on-board eMMC
• 1 user and reset push-button
• Fanout daughterboard
• 2 x FDCANs
• 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™, Keil® and GCC­based 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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2 Ordering 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.
Order code Board reference Target STM32
STM32H745I-DISCO
STM32H750B-DK STM32H750XBH6U

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 design or in production.
“E” or “ES” marking examples of location:
• On the targeted STM32 that is soldered on the board (for 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.
Some boards feature 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.
Table 1. List of available products
MB1381
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Ordering information
STM32H745XIH6U

2.2 Codification

The meaning of the codification is explained in Table 2.
STM32H7XXY-DISCO
STM32H7XXY-DK
STM32H7 MCU series in STM32 Arm Cortex MCUs STM32H7 Series
XX MCU product line in the series STM32H745
Y
DISCO / DK Discovery kit Discovery kit
The order code is mentioned on a sticker placed on the top side of the board.
Table 2. Codification explanation
Description Example: STM32H745I-DISCO
STM32 Flash memory size:
• B for 128 Kbytes
• I for 2 Mbytes
2 Mbytes
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3 Development environment

3.1 System requirements

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Development environment
• 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 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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Page 5

4 Conventions

Table 3 provides the conventions used for the ON and OFF settings in the present document.
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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Conventions
Table 3. ON/OFF convention
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5 Delivery 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.
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Delivery recommendations
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6 Hardware 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, 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
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Hardware layout and configuration
STLINK-V3E
TAG connector SWD
STDC connector
32.768 kHz crystal
128 Mbit SDRAM
2x512 Mbit Quad-SPI Flash
memory
4 Gbyte eMMC
Power supply
2x FDCANs
UART3
RTC
STM32H745XI/STM32H750XB
in TFGA240+25
FMC
QSPI
SDMMC1
PWR
FDCAN1/2
OTG
MII
UART1
LCD
SAI2
PDM
I2C4
SPI2
UART2
USB connector
Ethernet
POE
4.3 inch RGB LCD
Audio Codec
ARD connector
STMod+ connector
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6.1 STM32H745I-DISCO and STM32H750B-DK layout
Figure 4. STM32H745I-DISCO and STM32H750B-DK Discovery board top layout
UM2488
STM32H745I-DISCO and STM32H750B-DK layout
B1 reset button
B2 user button
CN1 Ethernet
connector
P1 STMod+
connector
CN16 TAG
connector
U34 MEMS microphone
U33 RGB LCD
connector
JP8 power
header
LD6/LD7/LD8
user LEDs
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STM32H745I-DISCO and STM32H750B-DK layout
Figure 5. STM32H745I-DISCO and STM32H750B-DK Discovery board bottom layout
CN12, CN16 Arduino
connectors
CN15 USB power
CN14 STLK USB
CN1 Ethernet
connector
U6 MCU
U7 SDRAM
JP8 power
CN3, CN7 Arduino
CN13 USB OTG_FS
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connector
connector
header
connectors
connector
U21, U22
FDCANs
U1, U2 QSPI
P1 STMod+
connector
CN14 STDC14
connector
U11 eMMC
CN8 line in
connector
CN9 line out
connector
U15 Audio
Codec
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STM32H745I-DISCO and STM32H750B-DK mechanical drawing

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)
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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.
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Drivers and firmware upgrade
The STLINK-V3E requires drivers to be installed on Windows®. It embeds a firmware that needs to be updated from time to time in order to benefit from new functionalities and bug corrections. Refer to technical note Overview of ST-LINK derivatives (TN1235) for details.

6.4 Power supply

The STM32H745I-DISCO and STM32H750B-DK Discovery kits are designed to be powered from a 5 V DC power source. Either of the following five 5 V DC power inputs can be used, upon appropriate board configuration:
• Micro-B USB receptacle CN14 of STLINK-V3E without enumeration: up to 500 mA can be supplied to the board (JP8 jumper setting on CHGR position on the silkscreen).
• 7 to 12 V DC power from CN3 pin8: named VIN on the silkscreen, extension connectors for ARDUINO® Uno shields or daughterboard (JP8 jumper setting on E5V on the silkscreen).
• 48 V DC power from RJ45 connector CN1 (Ethernet): In this case, the on-board module PoE (Power over Ethernet) generates the 5 V supply voltage with up to
600 mA. This module is a powered device complying with IEEE 802.3af, class 1 / 2 standard. The external power supply must be fully IEEE 802.3af compliant (JP8 jumper setting on POE5V on the silkscreen).
• Micro-AB USB receptacle CN13 of the USB OTG_FS interface: marked USB OTG FS on the board (JP8 jumper setting on USBFS on the silkscreen), and supplying up to 500 mA to the board.
• Micro-B USB receptacle CN15 of the USB power: marked USB PWR on the board (JP8 jumper setting on USBPWR on the silkscreen), and supplying up to 500 mA to the board.
• Micro-B USB receptacle CN14 of STLINK-V3E with enumeration: with enumeration feature (see Supplying
the board through the STLINK-V3E USB port), up to 500 mA can be supplied to the board (JP8 jumper
setting on STLK on the silkscreen).
The LD4 green LED turns ON when the voltage on the power line marked as +5 V is present. All the supply voltage lines required for the operation of the STM32H745I-DISCO/STM32H750B-DK components are derived from this +5 V line.
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Power supply
Supplying the board through the STLINK-V3E USB port
To power the STM32H745I-DISCO and STM32H750B-DK in this way, the USB host (a PC) gets connected to the Micro-B USB receptacle of the board via a USB cable. The connection event starts the USB enumeration procedure. In its initial phase, the host USB port current supply capability is limited to 100 mA. This is sufficient since only the STLINK-V3E part of the STM32H745I-DISCO/STM32H750B-DK draws power at that time: the U24 STMPS2151 power switch is set to the OFF position, which isolates the rest of the board from the power source. In the next phase of the enumeration procedure, the host PC informs the STLINK-V3E that it is able to supply current up to 300 mA. If the answer is positive, the STLINK-V3E sets the U24 STMPS2151 switch to the ON position to supply power to the rest of the board. Otherwise, CN3 pin8 (VIN) or CN15 can be used to supply the board instead.
Should a short-circuit occur on the board, the STMPS2151 power switch protects the USB port of the host PC against a current demand exceeding 500 mA, In such an event, the LD4 LED lights up.
The STM32H745I-DISCO and STM32H750B-DK boards can also be supplied from a USB power source that does not support enumeration, such as a USB charger. In this particular case, JP6 jumper must be ON with a jumper hat as shown in Table 4. Power-supply related jumper and solder bridge settings. STLINK-V3E bypasses STMPS2151 power regardless of the enumeration procedure result and passes the power unconditionally to the board.
The LD4 green LED turns ON whenever the whole board is powered.
Using STLINK-V3E along with powering through external power
It can happen that the board requires a supply current higher than 300 mA. It consequently cannot be supplied from host PC connected to STLINK-V3E USB port for debugging or programming the STM32H745XIH6 or STM32H750XBH6 microcontroller. In such a case, the board can be supplied through CN3 pin8 (marked VIN on the board) or by CN15.
To do this, it is important to power the board before connecting it with the host PC, which requires the following sequence to be respected:
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Power supply
1. Set jumper JP8 in the E5V or CHGR position.
2. Connect the external power source to CN3 pin8 or CN15.
3. Check that the green LED LD4 is turned ON.
4. Connect the host PC to USB connector CN14.
Caution: If the board requests more than 300 mA and the host PC is connected via USB before the board is powered
from CN3 pin8 or CN15, the following events may occur (listed in reverse severity order):
1. The host PC is capable of supplying 300 mA (the enumeration succeeds) but does not feature any over­current protection on its USB port. It is damaged due to over-current.
2. The host PC is capable of supplying 300 mA (the enumeration succeeds) and it has a built-in over-current protection on its USB port, limiting or shutting down the power out of its USB port when the excessive current demand from STM32H745I-DISCO/ STM32H750B-DK is detected. This causes an operating failure of the board.
3. The host PC is not capable of supplying 300 mA (the enumeration fails). The STLINK-V3E does not supply the rest of the STM32H745I-DISCO/STM32H750B-DK from its USB port VBUS line.
SMPS/LDO power supply
There are three solutions to provide power to the microcontroller V and LDO. Power consumption in Run mode is significantly improved by generating V
logic supply: SMPS, LDO, and SMPS
CORE
from the internal
CORE
DC/DC converter (SMPS) and the default connection must be set to SMPS. Some modifications are required to supply the microcontroller from the LDO. Below the board configuration for each case:
• LDO mode (default on the STM32H750XB): mount SB6, SB17 and SB45; remove SB5, SB18, SB26, SB27, SB44, SB46 and L4.
• SMPS mode (default on the STM32H745XI): mount SB5, SB18, SB44, SB46 and L4; remove SB6, SB17, SB27, SB26 and SB45.
• SMPS plus LDO mode: mount SB6, SB17, SB44, SB46 and L4; remove SB26, SB5, SB18, SB27 and SB45.
Using inconsistent firmware and hardware configurations for V
SMPS/LDO mode causes the board to be
CORE
bricked and unable to start up. To recover from this status, resolder the component according to the steps below:
1. Check the microcontroller firmware configuration regarding the V
power mode.
CORE
2. Resolder the solder bridge as described above for SMPS or LDO mode.
3. At power-on, check that the ST-LINK operates normally.
4. When the ST-LINK is connected, use the right SMPS/LDO configuration for your application.
Table 4. Power-supply related jumper and solder bridge settings describes the settings of all the jumpers related
to the powering of the STM32H745I-DISCO/STM32H750B-DK and the extension board. VDD_MCU corresponds to the STM32H745XIH6/STM32H750XBH6 digital supply voltage line. It can be connected to a fixed 3.3 V supply.
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Table 4. Power-supply related jumper and solder bridge settings
Jumper/Solder bridge Setting Configuration
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Clock sources

JP8
Power source selector
SB23
VBAT connection
SB15
VDD_USB connection
JP1
VDD_MCU connection
CHGR
CHGR
CHGR
CHGR
POE5V
ESV
POE5V
ESV
POE5V
ESV
POE5V
ESV
The STM32H745I-DISCO/STM32H750B-DK is supplied through the CN14 Micro-B
USBFS
STLK
USB receptacle.
The STM32H745I-DISCO/STM32H750B-DK is supplied through the pin 8 of CN3
USBFS
STLK
(marked VIN).
The STM32H745I-DISCO/STM32H750B-DK is supplied through the RJ45 connector
USBFS
STLK
CN1.
The STM32H745I-DISCO/STM32H750B-DK is supplied through the CN13 Micro-AB
USBFS
STLK
USB receptacle.
Default setting
CHGR
POE5V
ESV
The STM32H745I-DISCO/STM32H750B-DK is supplied through the CN14 Micro-B
USBFS
STLK
USB receptacle. It depends on host PC USB port powering capability declared in the enumeration.
SB23 ON
Default setting
VBAT is connected to +3V3.
SB23 OFF VBAT is not connected to +3V3.
Default setting.
SB15 ON
VDD_USB (VDDUSB terminal of STM32H745XIH6/STM32H750XBH6) is connected to VDD_MCU.
SB15 OFF VDD_USB is not connected to VDD_MCU.
Default setting
VDD_MCU (VDD terminals of STM32H745XIH6/STM32H750XBH6) is connected to fixed +3.3 V.
VDD_MCU (VDD terminals of STM32H745XIH6/STM32H750XBH6) is not connected to fixed +3.3 V
Note: STM32H750B-DK only supports the LDO mode.
6.5
Clock sources
Three clock sources are available on the STM32H745I-DISCO and STM32H750B-DK boards:
• X1: 25 MHz oscillator for STM32H745XIH6/STM32H750XBH6 microcontroller and Ethernet PHY.
• X2: 32 KHz crystal for STM32H745XIH6/STM32H750XBH6 embedded RTC
• X3: 25 MHz oscillator for STLK.

6.6 Reset sources

The reset signal of the STM32H745I-DISCO and STM32H750B-DK Discovery kits is active low. The reset sources include:
• B2 reset button
• ARDUINO® Uno shield board from CN3
• Embedded STLINK-V3E
• TAG connector
• STDC14 receiver
• eMMC
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Audio
• Ethernet

6.7 Audio

An audio Codec WM8994ECS/R from CIRRUS with four DACs and two ADCs is connected to the STM32H745XIH6 and STM32H750XBH6 SAI interface. It communicates with the STM32H745XIH6 and
STM32H750XBH6 microcontrollers via an I2C bus shared with the touchpanel of the RGB LCD, ARDUINO® and STMod+ connectors.
• The analog input line is connected to the WM8994ECS/R ADC through the blue audio jack (CN8).
• The analog output line is connected to the WM8994ECS/R DAC via the green audio jack (CN9).
• Two external speakers can be connected to WM8994ECS/R via CN18 for left speaker and CN17 for right speaker.
• The STM32H745I-DISCO and STM32H750B-DK feature one digital MP34DT01TR microphones (ST MEMs microphone). They are connected to the input digital microphones of the STM32H745XIH6/ STM32H750XBH6 and are managed by the PDM functionality.

6.8 USB OTG_FS

The STM32H745I-DISCO and STM32H750B-DK boards support USB OTG full-speed communications via the CN13 USB Micro-AB connector.
The USB connectors can power the Discovery kit with a 5 V DC supply voltage, at a current up to 500 mA. A USB power switch is also connected to VBUS and provides power to CN13. The green LED LD1 is lit when
either one of the following event occurs:
• The power switch is ON and the STM32H745I-DISCO/STM32H750B-DK operate as a USB host.
• VBUS is powered by another USB host when the STM32H745I-DISCO/STM32H750B-DK operate as a USB device.
The red LED LD5 is lit when an overcurrent occurs.
Note: The STM32H745I-DISCO and STM32H750B-DK boards must be powered by external power supply when using
the OTG function.

6.9 eMMC

The STM32H745I-DISCO and STM32H750B-DK embed a 4-Gbyte eMMC chip. It is connected to the STM32H745XIH6 and STM32H750XBH6 SDMMC1 port.

6.10 Ethernet

The STM32H745I-DISCO and STM32H750B-DK boards support 10M/100M Ethernet communications by a MICROCHIP LAN8740Ai-EN-TR PHY, which supports IEEE 802.3az Energy Efficient Ethernet (EEE) and integrated RJ45 connector CN1. The Ethernet PHY is connected to the STM32H745XIH6/STM32H750XBH6 microcontroller through an MII interface.
The PHY 25 MHz clock is generated from the X1 oscillator, while the STM32H745XIH6/STM32H750XBH6 50 MHz clock is generated by the PHY MII_REF_CLK.
6.11

Power over Ethernet

The STM32H745I-DISCO and STM32H750B-DK Discovery boards embed a power module that uses Ethernet. This module is an IEEE802.3af compliant class 1 / 2 PoE converter, based on a simple diode rectified Flyback topology built around ST PM8800A component. This “powered device” module accepts a 48 V input voltage and can deliver 5 V with 600 mA.

6.12 SDRAM

A 128-Mbit SDRAM (MT48LC4M32B2B5-6A IT_L TR from MICRON) is connected to the STM32H745XIH6/ STM32H750XBH6 FMC interface.
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6.13 Quad-SPI NOR Flash memory
By default, two 512-Mbit Quad-SPI NOR Flash memories (MT25QL512ABB8ESF-0SIT from MICRON) are connected to the STM32H745XIH6/STM32H750XBH6 Quad-SPI interface. A single 1-Gbit Quad-SPI NOR Flash memory (MT25TL01GHBB8ESF-0SIT from MICRON) can also be plugged on the board. In this case, configure the board as follows:
• U1/U2/R14/R3/R2/R9/SB2/C15 ON
• R53/R62/R54/R56/R60/SB8/SB48 OFF

6.14 Virtual COM port

The USART3 serial interface is directly available as a virtual COM port of the PC, connected to the STLINK-V3 USB connector ( CN14). The virtual COM port settings as the following:
• 115200 baud
• 8-bit data
• No parity
• 1 stop bit
• no flow control
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Quad-SPI NOR Flash memory
6.15

RGB LCD display

The on-board color display is a 4.3 inch 480x272 LCD-TFT with capacitive touchpanel. It is connected to the STM32H745XIH6/STM32H750XBH6 LCD interface.

6.16 Buttons and LEDs

The black button (B2), located on the board top side, is the reset of the STM32H745XIH6 and STM32H750XBH6 microcontrollers. Refer to Figure 4. STM32H745I-DISCO and STM32H750B-DK Discovery board top layout. The blue button (B1), located on the top side, is available to be used as a digital input or as Wakeup alternate function.
Table 5 summarizes the assignment of the control ports to the LED indicators.
reference Color Name Comment
B1 BLUE USER Wakeup alternate function
B2 BLACK RESET -
LD1 GREEN VBUS USB FS PA9
LD2 GREEN/RED STLK COM Green when communication ongoing
LD3 RED STLK Over Current -
LD4 GREEN PWR -
LD5 GREEN OTG Over Current PH11
LD6 RED USER1 PJ2
LD7 GREEN USER2 PI13
LD8 GREEN ARDUINO PD3
Table 5. Assignment of control ports to LED
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7 Connectors

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Connectors
7.1
Caution:
ARDUINO® Uno V3 connectors
CN2, CN3, CN6 and CN7 are female connectors compatible with the ARDUINO® standard. Most shields designed for ARDUINO® can fit to the STM32H745I-DISCO and STM32H750B-DK Discovery kits. The
STM32H745I-DISCO/STM32H750B-DK ARDUINO® connectors support ARDUINO® Uno V3.
The STM32 microcontroller I/Os are 3.3 V compatible instead of 5 V for ARDUINO® Uno.
Table 6. ARDUINO® connectors (CN2, CN3, CN6, and CN7)
Left connectors Right connectors
CN
number
CN3
power
CN7
analog
Pin
number
1 NC - - SPI2_SCK PD3 D13 6
2 IOREF - 3.3V Ref SPI2_MISO PI2 D12 5
3 RESET NRST RESET
4 3V3 -
5 5V - 5Voutput TIM8_CH3N PH15 D9 2
6 GND - Ground - PE3 D8 1
7 GND - Ground -
8 VIN - Power input - PI8 D7 8
1 A0 PC0 ADC123_IN10 TIM1_CH1 PA8 D5 6
2 A1 PF8 ADC3_IN7 - PK1 D4 5
3 A2 PA0_C ADC12_IN0 TIM3_CH1 PA6 D3 4
4 A3 PA1_C ADC12_IN1 - PG3 D2 3
5 A4 PC2_C or PD13
6 A5 PC3_C or PD12
Pin
name
Microcontroller
pin
-
- TIM15_CH2 PE6 D6 7
Function Function
I2C1_SCL PD12 D15 10
I2C1_SDA PD13 D14 9
AVDD - AREF 8
Ground - GND 7
TIM12_CH2,
SPI2_MOSI
3.3V
input/output
ADC3_IN0
(PC2) or
I2C1_SDA
(PD13)
ADC3_IN1
(PC3) or
I2C1_SCL
(PD12)
TIM3_CH1,
SPI2_NSS
USART1_TX PB6 D1 2
USART1_RX PB7 D0 1
Microcontroller
pin
PB15 D11 4
PB4 D10 3
Pin
name
Pin
numberCNnumber
CN2
digital
CN6
digital
UM2488 - Rev 4
page 16/55
Page 17
7.2 CN13 USB OTG_FS Micro-AB connector
Figure 7. CN13 USB OTG Micro-AB connector (front view)
Table 7. CN13 USB OTGFS micro-AB connector
Pin number Description Pin number Description
1 VBUS 4 ID
2 D- 5 GND
3 D+ - -

7.3 CN1 Ethernet RJ45 connector

UM2488
CN13 USB OTG_FS Micro-AB connector
Figure 8. CN1 Ethernet RJ45 connector (front view)
Table 8. CN1 Ethernet RJ45 connector
Pin number Description Pin number Description
1 TX+ 7 Nc7
2 TX- 8 Nc8
3 RX+ 9 K, yellow LED
4 Nc4 10 A, yellow LED
5 Nc5 11 K, green LED
6 RX- 12 A, green LED
UM2488 - Rev 4
page 17/55
Page 18
7.4 LCD RGB connector
Description Pin connection Pin number Description Pin connection
1 LCD_BL_K - 2 LCD_BL_A -
3 GND - 4 VDD -
5 LCD_R0 PI15 6 LCD_R1 PJ0
7 LCD_R2 PJ1 8 LCD_R3 PH9
9 LCD_R4 PJ3 10 LCD_R5 PJ4
11 LCD_R6 PJ5 12 LCD_R7 PJ6
13 LCD_G0 PJ7 14 LCD_G1 PJ8
15 LCD_G2 PJ9 16 LCD_G3 PJ10
17 LCD_G4 PJ11 18 LCD_G5 PI0
19 LCD_G6 PI1 20 LCD_G7 PK2
21 LCD_B0 PJ12 22 LCD_B1 PJ13
23 LCD_B2 PJ14 24 LCD_B3 PJ15
25 LCD_B4 PK3 26 LCD_B5 PK4
27 LCD_B6 PK5 28 LCD_B7 PK6
29 GND - 30 LCD_CLK PI14
31 LCD_DISP PD7 32 LCD_HSYNC PI12
33 LCD_VSYNC PI9 34 LCD_DE PK7
35 GND - 36 GND -
37 LCD_RST - 38 LCD_INT PG2
39 LCD_SCL PD12 40 LCD_SDA PD13
UM2488
LCD RGB connector
Figure 9. LCD RGB connector (footprint)
Table 9. LCD RGB connector
UM2488 - Rev 4
page 18/55
Page 19

7.5 CN2 STMod+ connector

An STMod+ connector is available on the STM32H745I-DISCO and STM32H750B-DK Discovery kits. It provides flexibility in small form factor applications. In addition, the STMod+ connector expands the SPI interface and frees I/Os that can be used by other peripheral expansions.
Pin number Description Pin number Description
1 SS/CTS (PA15/PA0) 11 INT (PH12)
2 MOSI/TXD (PB15/PD5) 12 RESET (PH10)
3 MISO/RXD (PI2/PD6) 13 ADC (PA4)
4 SCK/RTS (PD3/PD4) 14 PWM (PA3)
5 GND 15 5V
6 5V 16 GND
7 I2C_SCL (PD12) 17 GPIO (PH1)
8 MOSIs (PI3) 18 GPIO (PI11)
9 MISOs (PB14) 19 GPIO(PH4)
10 I2C_SDA (PD13) 20 GPIO(PH8)
UM2488
CN2 STMod+ connector
Table 10. CN2 STMod+ connector

7.6 CN14 STLINK-V3 USB Micro-B connector

The CN14 USB connector is used to connect the embedded STLINK-V3E to the host PC in order to program and debug the STM32H745XIH6/STM32H750XBH6 microcontroller.
Figure 10. CN14 USB Micro-B connector (front view)
Table 11. CN14 USB Type-B connector
Pinnumber Description Pin number Description
1 VBUS (power) 4 GND
2 DM 5, 6 Shield
3 DP - -

7.7 Audio stereo speaker header connectors (CN17 and CN18)

The stereo audio outputs, CN17 and CN18, can support the left and right stereo speakers, respectively.

7.8 CN9 audio line output (green jack) connector

A 3.5 mm stereo audio green jack output, CN9, can support the headphone.
UM2488 - Rev 4
page 19/55
Page 20

7.9 CN8 audio line input (blue jack) connector

A 3.5 mm stereo audio green jack input, CN8, can support the audio line input.

7.10 CN16 TAG connector

The CN16 TAG connector is used to connect the STM32H745XIH6/STM32H750XBH6 microcontroller for the board programming and debugging.
Figure 11. CN16 TAG debugging connector (top view)
UM2488
CN8 audio line input (blue jack) connector
Pin number Description Pin number Description
1 VDD 10 RESET#
2 SWDIO(PA13) 9 NA
3 GND 8 TDI(PA15)
4 SWCLK(PA14) 7 NA
5 GND 6 SWO(PB3)

7.11 CN4 STDC14 connector

The STDC14 connector can be used to program/debug the microcontroller in an external application board using a cable connected to the CN4 SWD connector.
Pin number Description Pin number Description
1 NC 8 T_SWO
2 NC 9 NC
3 3V3 10 T_JTDI
4 T_SWDIO 11 GNDDETECT
5 GND 12 T_NRST
6 T_SWCLK 13 T_VCP_RX
7 GND 14 T_VCP_TX
Table 12. CN16 TAG connector
Table 13. STDC14 connector
UM2488 - Rev 4
page 20/55
Page 21

7.12 CN15 USB power connector

Figure 12. CN15 USB Micro-B connector (front view)
Table 14. CN15 USB Micro-B connector
Pin number Description Pin number Description
1 VBUS 4 NC
2 NC 5 GND
3 NC - -
UM2488
CN15 USB power connector
UM2488 - Rev 4
page 21/55
Page 22
STM32H745I-DISCO and STM32H750B-DK I/O assignment

8 STM32H745I-DISCO and STM32H750B-DK I/O assignment

Table 15. STM32H745I-DISCO and STM32H750B-DK I/O assignment
Pin Name Pin Number Signal or Label Comment
PA0 N5 STMOD#1-CTS -
PA1 N4 MII_RX_CLK -
PA2 N3 MII_MDIO -
PA3 U2 STMOD#14-PWM -
PA4 U3 STMOD#13-ADC -
PA5 T3 OTG_FS2_PSO -
PA6 R3 ARD_D3 -
PA7 R5 MII_RX_DV -
PA8 E5 ARD_D5 -
PA9 D15 VBUS_FS2 -
PA10 D14 USB_OTG_FS2_ID -
PA11 E17 USB_OTG_FS2_N -
PA12 E16 USB_OTG_FS2_P -
PA13 C15 SWDIO SWDIO
PA14 B14 SWCLK SWCLK
PA15 A14 STMOD#1_SPI_CS||T_JTDI -
PB0 U5 MII_RXD2 -
PB1 T5 MII_RXD3 -
PB2 R6 MII_TX_ER -
PB3 C6 SWO -
PB4 B7 ARD_D10 -
PB5 A5 FDCAN2_RX -
PB6 B5 ARD_D1 -
PB7 C5 ARD_D0 -
PB8 D5 SDIO1_D4 -
PB9 D4 SDIO1_D5 -
PB10 P11 VCP_TX -
PB11 P12 VCP_RX -
PB12 T14 LCD_RST -
PB13 U14 FDCAN2_TX -
PB14 U15 STMOD#9-MISOs -
PB15 T15 ARD_D11 -
PC0 L2 ARD_A0 -
PC1 M2 MII_MDC -
PC2 M3 MII_TXD2 -
PC3 M4 MII_TX_CLK -
PC4 T4 MII_RXD0 -
UM2488
UM2488 - Rev 4
page 22/55
Page 23
UM2488
STM32H745I-DISCO and STM32H750B-DK I/O assignment
Pin Name Pin Number Signal or Label Comment
PC5 U4 MII_RXD1 -
PC6 F14 SDIO1_D6 -
PC7 F13 SDIO1_D7 -
PC8 E13 SDIO1_D0 -
PC9 E14 SDIO1_D1 -
PC10 A13 SDIO1_D2 -
PC11 B13 SDIO1_D3 -
PC12 C12 SDIO1_CK -
PC13 E3 WAKEUP -
PC14 C2 OSC32_IN -
PC15 C1 OSC32_OUT -
PD0 D13 SDRAM_D2 -
PD1 E12 SDRAM_D3 -
PD2 D12 SDIO1_CMD -
PD3 B12 ARD_D13 -
PD4 A12 STMOD#4-RTS -
PD5 A11 STMOD#2-TX -
PD6 B11 STMOD#3-RX -
PD7 C11 LCD_DISP -
PD8 U16 SDRAM_D13 -
PD9 T17 SDRAM_D14 -
PD10 T16 SDRAM_D15 -
PD11 R15 QSPI_BK1_IO0 -
PD12 R16 IIC4_SCL -
PD13 R17 IIC4_SDA -
PD14 P16 SDRAM_D0 -
PD15 P15 SDRAM_D1 -
PE0 C4 SDRAM_NBL0 -
PE1 B4 SDRAM_NBL1 -
PE2 C3 MII_TXD3 -
PE3 D3 ARD_D8 -
PE4 D2 SAI4_D2 -
PE5 D1 SAI4_CK2 -
PE6 E5 ARD_D6 -
PE7 U9 SDRAM_D4 -
PE8 T9 SDRAM_D5 -
PE9 P9 SDRAM_D6 -
PE10 N9 SDRAM_D7 -
PE11 P10 SDRAM_D8 -
PE12 R10 SDRAM_D9 -
UM2488 - Rev 4
page 23/55
Page 24
UM2488
STM32H745I-DISCO and STM32H750B-DK I/O assignment
Pin Name Pin Number Signal or Label Comment
PE13 T10 SDRAM_D10 -
PE14 U10 SDRAM_D11 -
PE15 R11 SDRAM_D12 -
PF0 G4 SDRAM_A0 -
PF1 G3 SDRAM_A1 -
PF2 G1 SDRAM_A2 -
PF3 H4 SDRAM_A3 -
PF4 J5 SDRAM_A4 -
PF5 J4 SDRAM_A5 -
PF6 K2 QSPI_BK1_IO3 -
PF7 K3 QSPI_BK1_IO2 -
PF8 K4 ARD_A1 -
PF9 L4 QSPI_BK1_IO1 -
PF10 L3 QSPI_CLK -
PF11 T7 SDRAM_SDNRAS -
PF12 R7 SDRAM_A6 -
PF13 P7 SDRAM_A7 -
PF14 P8 SDRAM_A8 -
PF15 R9 SDRAM_A9 -
PG0 T8 SDRAM_A10 -
PG1 U8 SDRAM_A11 -
PG2 H16 LCD_INT -
PG3 H15 ARD_D2 -
PG4 H14 SDRAM_BA0 -
PG5 G14 SDRAM_BA1 -
PG6 G15 RCC_OSC_OUT -
PG7 F16 Audio_Int -
PG8 F15 SDRAM_SDCLK -
PG9 A10 QSPI_BK2_IO2 -
PG10 A9 SAI2_SDB -
PG11 B9 MII_TX_EN -
PG12 C9 MII_TXD1 -
PG13 D9 MII_TXD0 -
PG14 D8 QSPI_BK2_IO3 -
PG15 D6 SDRAM_SDNCAS -
PH0 J2 OSC_25M -
PH1 J1 STMOD#17 -
PH2 N2 QSPI_BK2_IO0||MII_CRS -
PH3 P2 QSPI_BK2_IO1||MII_COL -
PH4 P3 STMOD#19 -
UM2488 - Rev 4
page 24/55
Page 25
UM2488
STM32H745I-DISCO and STM32H750B-DK I/O assignment
Pin Name Pin Number Signal or Label Comment
PH5 P4 SDRAM_SDNWE -
PH6 T11 SDRAM_SDNE1 -
PH7 U13 SDRAM_SDCKE1 -
PH8 T13 STMOD#20 -
PH9 R13 LCD_R3 -
PH10 P13 STMOD#12-RST -
PH11 P14 OTG_FS2_Overcurrent -
PH12 R14 STMOD#11-INT -
PH13 D16 FDCAN1_TX -
PH14 B17 FDCAN1_RX -
PH15 PF6 ARD_D9 -
PI0 A16 LCD_G5 -
PI1 A15 LCD_G6 -
PI2 B15 ARD_D12 -
PI3 C14 STMOD#8-MOSIs -
PI4 A4 SAI2_MCLKA -
PI5 A3 SAI2_SCKA -
PI6 A2 SAI2_SDA -
PI7 B3 SAI2_FSA -
PI8 E4 ARD_D7 -
PI9 E2 LCD_VSYNC -
PI10 F3 MII_RX_ER -
PI11 F4 STMOD#18 -
PI12 H1 LCD_HSYNC -
PI13 H2 LED2 -
PI14 H3 LCD_CLK -
PI15 P5 LCD_R0 -
PJ0 N6 LCD_R1 -
PJ1 P6 LCD_R2 -
PJ2 T6 LED1 -
PJ3 U6 LCD_R4 -
PJ4 U7 LCD_R5 -
PJ5 R12 LCD_R6 -
PJ6 N15 LCD_R7 -
PJ7 N14 LCD_G0 -
PJ8 N13 LCD_G1 -
PJ9 M14 LCD_G2 -
PJ10 L14 LCD_G3 -
PJ11 K14 LCD_G4 -
PJ12 D11 LCD_B0 -
UM2488 - Rev 4
page 25/55
Page 26
UM2488
STM32H745I-DISCO and STM32H750B-DK I/O assignment
Pin Name Pin Number Signal or Label Comment
PJ13 E10 LCD_B1 -
PJ14 D10 LCD_B2 -
PJ15 B10 LCD_B3 -
PK0 J14 LCD_BL -
PK1 J15 ARD_D4 -
PK2 H17 LCD_G7 -
PK3 C8 LCD_B4 -
PK4 B8 LCD_B5 -
PK5 A8 LCD_B6 -
PK6 C7 LCD_B7 -
PK7 D7 LCD_DE -
- L16 DSI_CK_P NC
- L17 DSI_CK_N NC
- M16 DSI_D0_P NC
- M17 DSI_D0_N NC
- K16 DSI_D1_P NC
- K17 DSI_D1_N NC
- T1 ARD_A2 -
- T2 ARD_A3 -
- R1 ARD_A4 -
- R2 ARD_A5 -
- E9 VDD ARD_D7
- E11 VDD -
- F5 VDD -
- G5 VDD -
- G13 VDD -
- H5 VDD EXT_RST
- H13 VDD -
- J13 VDD -
- K13 VDD -
- L13 VDD -
- M13 VDD ARD_A0
- N12 VDD -
- N11 VDD -
- N10 VDD -
- N7 VDD DSIHOST_TE
- L5 VDD -
- K5 VDD -
- E6 VDD -
P11 F1 VDDIO_SD1 -
UM2488 - Rev 4
page 26/55
Page 27
UM2488
STM32H745I-DISCO and STM32H750B-DK I/O assignment
Pin Name Pin Number Signal or Label Comment
P12 E1 VLX -
P13 F2 VSSIO_SD -
P14 U11 VCAP1 -
P15 D17 VCAP2 -
R1 A7 VCAP3 -
R2 N8 VDDIO1 -
R3 M5 VDDIO2 -
R4 U12 VDDIO33_LDO1 -
R5 C17 VDDIO33_LDO2 -
R6 A6 VDDIO33_LDO3 -
R7 G17 VDD50_USB -
R8 F17 VDD_USB33 -
- L1 VDDA -
- M1 VREF+ -
- B1 VBAT -
- A1 VSS -
- C10 VSS -
- C13 VSS -
- C16 VSS -
- G16 VSS -
- J3 VSS -
- N16 VSS -
- U17 VSS -
- T12 VSS -
- R8 VSS -
- L9 VSS -
- L11 VSS -
- K10 VSS -
- K11 VSS -
- A17 VSS -
- L10 VSS -
- B6 VSS -
- B2 VSS -
- R2 VSS -
- G7 VSS -
- G8 VSS -
- G9 VSS -
- G10 VSS -
- G11 VSS -
- H7 VSS -
UM2488 - Rev 4
page 27/55
Page 28
UM2488
STM32H745I-DISCO and STM32H750B-DK I/O assignment
Pin Name Pin Number Signal or Label Comment
- H8 VSS -
- H9 VSS -
- H10 VSS -
- H11 VSS -
- J7 VSS -
- J8 VSS -
- J9 VSS -
- J10 VSS -
- J11 VSS -
- K7 VSS -
- K8 VSS -
- K9 VSS -
- L7 VSS -
- L8 VSS -
- U1 VSS -
- P1 VSSA -
- N1 VREF- -
- P17 VDD33_DSI -
- N17 VDD12_DSI_CAP -
- J16 VSSDSI1 -
- J17 VSSDSI2 -
- K15 VSSDSI3 -
- L15 VSSDSI4 -
- M15 VSSDSI5 -
UM2488 - Rev 4
page 28/55
Page 29

9 Electrical schematics

This section provides the design schematics for the STM32H745I-DISCO and STM32H750B-DK Discovery boards:
• Overall schematic for the STM32H745I-DISCO and STM32H750B-DK, see Figure 13
• STM32H45I microcontroller I/Os, see Figure 14
• STM32H50XB microcontroller I/Os, see Figure 15
• STM32H45I microcontroller power, see Figure 16
• STM32H50XB microcontroller power, see Figure 17
• Ethernet, see Figure 18
• Power over Ethernet (PoE), see Figure 19
• USB OTG_FS, see Figure 20
• FDCAN, see Figure 21
• SDRAM, see Figure 22
• eMMC, see Figure 23
• QSPI, see Figure 24
• 4.3” LCD, see Figure 25
• Audio, see Figure 26. Audio
• STMod+ , see Figure 27
• TAG, see Figure 28
• ARDUINO® connectors, see Figure 29
• STLINK-V3E-SWD module, see Figure 30
• STLINK-V3E-SWD power module, see Figure 31
UM2488
Electrical schematics
UM2488 - Rev 4
page 29/55
Page 30
2 19
TOP
Title:
Size:
Reference: Sheet: ofA3
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
Power STM32 microcontroller Power.SchDoc
TDI
RESET#
TRST
TMS/SWDIO TCK/SWCLK
TDO/SWO
TAG TAG.SchDoc
Audio
Audio_I2C
PDM
Audio Audio.SchDoc
LCD LCD_I2C
LCD LCD4.3.SchDoc
OTG_FS2_OverCurrent
USB_FS2_DM USB_FS2_DP
USB_FS2_ID
OTG_FS2_PSO
USB_OTG_FS USBOTG FS.SchDoc
NRST
ARD_A0 ARD_A1 ARD_A2 ARD_A3 ARD_A4 ARD_A5
ARD_D5
ARD_D4
ARD_D3
ARD_D2
ARD_D1
ARD_D0
ARD_D13
ARD_D12
ARD_D11
ARD_D10
ARD_D9
ARD_D8
ARD_D6 ARD_D7
ARD_I2C
Arduino ArduinoConnector.SchDoc
STMOD#12-RST
STMOD#1-NSS
STMOD#11-INT
STMOD#3-MISOp
STMOD#2-TX
STMOD#2-MOSIp
STMOD#3-RX
STMOD#4-SCK
STMOD#8-MOSIs
STMOD#13-ADC STMOD#14-PWM
STMOD#19 STMOD#20
STMOD#1-CTS
STMOD#17 STMOD#18
STMOD#4-RTS
STMOD_I2C
STMOD#9-MISOs
STMod+ STMod+.SchDoc
LCD
eMMC
Audio
PDM
MII_TXD0
MII_TX_EN
MII_TX_CLK
MII_RXD0
MII_RX_ER MII_RX_DV MII_RX_CLK
MII_COL MII_CRS
MII_TXD1 MII_TXD2 MII_TXD3
MII_RXD1 MII_RXD2 MII_RXD3 MII_TX_ER/nINT
MII_MDC MII_MDIO
SWDIO SWCLK SWO
VCP_RX
VCP_TX
I2C4
ARD_D5
ARD_D4
ARD_D3
ARD_D2
ARD_D1
ARD_D0
ARD_D13
ARD_D12
ARD_D11
ARD_D10
ARD_D9
ARD_D8
ARD_D6 ARD_D7
ARD_A0 ARD_A1 ARD_A2 ARD_A3 ARD_A4 ARD_A5
RESET
OTG_FS2_PSO
OTG_FS2_OverCurrent
USB_FS2_DM
USB_FS2_DP
USB_FS2_ID
FDCAN1_TX FDCAN1_RX FDCAN2_TX FDCAN2_RX
STMOD#1_SPI_CS
STMOD#11-INT STMOD#12-RST
STMOD#2-TX STMOD#3-RX
STMOD#8-MOSIs STMOD#9-MISOs
STMOD#13-ADC
STMOD#14-PWM
STMOD#17 STMOD#18
STMOD#1-CTS
STMOD#4-RTS
STMOD#19 STMOD#20
SDRAM
OSC_25M
T_JTDI
QSPI
U_MCU
STM32 microcontroller IOs.SchDoc
SDRAM
SDRAM SDRAM.SchDoc
QSPI
QSPI QSPI.SchDoc
eMMC
eMMC_RSTn
eMMC eMMC.SchDoc
MII_TXD0
MII_TX_EN
MII_TX_CLK
MII_RXD0
MII_RX_ER
MII_RX_DV
MII_RX_CLK
MII_COL MII_CRS
RESET#
MII_TXD1 MII_TXD2 MII_TXD3
MII_RXD1 MII_RXD2 MII_RXD3
MII_TX_ER/nINT
MII_MDC
MII_MDIO
OSC_25M
U_Ethernet Ethernet.SchDoc
FDCAN1_TX FDCAN1_RX FDCAN2_TX FDCAN2_RX
FDCANs FDCAN.SchDoc
RST
RST
T_SW_DIR
T_SWCLK
T_SWO T_NRST
MCO
T_SWDIOT_PWR_EXT
T_PWR_EN
T_VCP_TX T_VCP_RX
T_JTDI
STlink_V3E_Module STlink_V3E_Module.SchDoc
T_PWR_EXT
T_PWR_EN
STlink_V3E_PWR STlink_V3E_PWR.SchDoc
HW_Mechanical_Parts HW_Mechanical_Parts.SchDoc
UM2488 - Rev 4
Figure 13. STM32H745I-DISCO and STM32H750B-DK schematic (top view)
page 30/55
Electrical schematics
UM2488
Page 31
3 19
STM32 microcontroller IOs
Title:
Size:
Reference: Sheet: ofA3
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
SDRAM
SDRAM_D[0..15]
SDRAM_A[0..11]
SDRAM
SDRAM_A[0..11]
SDRAM__SDNCAS
SDRAM_NBL0
SDRAM_SDNE1
SDRAM_SDCKE1
SDRAM_D[0..15]
SDRAM_NBL1
SDRAM_BA0 SDRAM_BA1
SDRAM_NWE
SDRAM_CLK
SDRAM__SDNRAS
SDRAM
SDRAM_NBL0 SDRAM_NBL1
SDRAM_BA0 SDRAM_BA1
SDRAM_SDCKE1
SDRAM_SDNE1
SDRAM_SDNRAS
SDRAM_SDNCAS
SDRAM_SDNWE SDRAM_SDCLK
SDRAM_SDNWE
SDRAM_SDNRAS
SDRAM_BA0 SDRAM_BA1
SDRAM_SDCLK
SDRAM_SDNCAS
SDRAM_NBL0 SDRAM_NBL1
SDRAM_SDNE1
SDRAM_A0 SDRAM_A1 SDRAM_A2 SDRAM_A3 SDRAM_A4 SDRAM_A5
SDRAM_A6 SDRAM_A7 SDRAM_A8 SDRAM_A9
SDRAM_A10 SDRAM_A11
LCD_R[0..7] LCD_G[0..7]
LCD_B[0..7] LCD_HSYNC LCD_VSYNC
LCD_DE LCD_DISP LCD_CLK
LCD_INT
LCD_BL
LCD_RST
LCD
LCD_R[0..7]
LCD
LCD_G[0..7] LCD_B[0..7] LCD_HSYNC LCD_VSYNC
LCD_CLK
LCD_DE LCD_DISP
LCD_INT
IIC4_SDA
IIC4_SCL
LCD_BL
LCD
LCD_B0
LCD_G0
LCD_R0
LCD_R1 LCD_R2
LCD_R3
LCD_R4 LCD_R5 LCD_R6 LCD_R7
LCD_G1 LCD_G2 LCD_G3 LCD_G4
LCD_G5 LCD_G6
LCD_G7
LCD_B1 LCD_B2 LCD_B3
LCD_B4 LCD_B5 LCD_B6 LCD_B7
LCD_HSYNC
LCD_VSYNC
LCD_CLK
LCD_DE
LCD_DISP
LCD_RST
LCD_INT
LCD_BL
QSPI
QSPI_IO1
QSPI_IO0
QSPI_CLK
QSPI_CS1
QSPI_IO2 QSPI_IO3
QSPI_IO5
QSPI_IO4
QSPI_IO6 QSPI_IO7
QSPI_CS2
QSPI
QSPI_BK1_IO0 QSPI_BK1_IO1 QSPI_BK1_IO2 QSPI_BK1_IO3
QSPI_BK1_NCS
QSPI_CLK
QSPI_BK2_IO0 QSPI_BK2_IO1 QSPI_BK2_IO2 QSPI_BK2_IO3
QSPI
QSPI_BK1_IO0
QSPI_BK1_IO1
QSPI_BK1_IO2
QSPI_BK1_IO3
QSPI_BK1_NCS
QSPI_CLK
QSPI_BK2_IO0 QSPI_BK2_IO1
QSPI_BK2_IO2
QSPI_BK2_IO3
SDIO1_D[0..7]
eMMC
SDIO1_D[0..7]
SDIO1_CMD
SDIO1_CK
eMMC
SDIO1_CK SDIO1_CMD
eMMC
SDIO1_D0 SDIO1_D1 SDIO1_D2
SDIO1_D3
SDIO1_D4 SDIO1_D5
SDIO1_D6 SDIO1_D7
SDIO1_CK
SDIO1_CMD
Audio
SAI_SDB
SAI_FSA
Audio_Int
SAI_SDA
SAI_SCKA
SAI_MCKA
SAI
Audio
SAI2_MCLKA
SAI2_SCKA SAI2_FSA SAI2_SDA SAI2_SDB Audio_Int
PDM
SAI4_CK2
SAI4_D2
SAI2_MCLKA SAI2_SCKA
SAI2_FSA
SAI2_SDA
SAI2_SDB
Audio_Int
SAI4_CK2
SAI4_D2
MII_TXD0
MII_TX_EN
MII_TX_CLK
MII_RXD0
MII_RX_ER MII_RX_DV
MII_RX_CLK
MII_COL MII_CRS
MII_TXD1 MII_TXD2 MII_TXD3
MII_RXD1 MII_RXD2 MII_RXD3
MII_TX_ER/nINT
MII_MDC MII_MDIO
Ethernet
MII_TX_CLK MII_TX_EN MII_TXD0 MII_TXD1 MII_TXD2 MII_TXD3
MII_RXD0 MII_RXD1 MII_RXD2 MII_RXD3 MII_RX_ER MII_RX_DV MII_RX_CLK
MII_COL MII_CRS
MII_MDC MII_MDIO
MII_TX_ER/nINT
MII_TX_CLK
MII_TX_EN
MII_TXD0
MII_TXD1
MII_TXD2
MII_TXD3
MII_RXD0 MII_RXD1
MII_RXD2 MII_RXD3
MII_RX_ER
MII_RX_DV
MII_RX_CLK
MII_COL
MII_CRS
MII_MDC
MII_MDIO
MII_TX_ER/nINT
SWDIO
SWCLK
SWO
VCP_RX VCP_TX
DEBUG
SWDIO
SWCLK
SWO
VCP_RX VCP_TX
SWDIO SWCLK
SWO
VCP_RX
VCP_TX
I2C4
ARD_D5 ARD_D4 ARD_D3 ARD_D2 ARD_D1 ARD_D0
ARD_D13 ARD_D12 ARD_D11 ARD_D10
ARD_D9 ARD_D8
ARD_D6
ARD_D7
ARD_A0 ARD_A1 ARD_A2 ARD_A3 ARD_A4 ARD_A5
Ethernet
IIC4_SDA IIC4_SCL
ARD_A0 ARD_A1 ARD_A2 ARD_A3 ARD_A4 ARD_A5
ARD_D0
ARD_D1
ARD_D2
ARD_D3
ARD_D4
ARD_D5
ARD_D6
ARD_D7
ARD_D8
ARD_D9
ARD_D10
ARD_D11
ARD_D12
ARD_D13
ARD_A0
ARD_A1
ARD_A2 ARD_A3
ARD_A4 ARD_A5
ARD_D0
ARD_D1
ARD_D2
ARD_D3
ARD_D4
ARD_D5
ARD_D6
ARD_D7
ARD_D8
ARD_D9ARD_D11
ARD_D12
ARD_D13
RESET
BOOT0
3V3
3V3
3V3
Capacitor closeto MCU
RESET
RESET
OTG_FS2_PSO
OTG_FS2_OverCurrent
USB_FS2_DM USB_FS2_DP
USB_FS2_ID
OTG_FS
OTG_FS2_PSO OTG_FS2_OverCurrent
USB_OTG_FS2_N
USB_FS2_ID
OTG_FS2_PSO
OTG_FS2_OverCurrent
USB_FS2_ID
STMOD#11-INT
STMOD#12-RST
STMOD#2-TX
STMOD#3-RX
STMOD#8-MOSIs
STMOD#9-MISOs
STMOD#13-ADC
STMOD#14-PWM
STMOD#17
STMOD#18
STMOD#19
STMOD#20
STMOD#1-CTS
STMOD#4-RTS
STMod+
STMOD#1-CTS
STMOD#2-TX
STMOD#3-RX
STMOD#4-RTS
STMOD#8-MOSIs
STMOD#9-MISOs
STMOD#11-INT
STMOD#12-RST
STMOD#13-ADC
STMOD#14-PWM
STMOD#17
STMOD#18
STMOD#19
STMOD#20
STMOD#1-CTS
STMOD#2-TX STMOD#3-RX
STMOD#4-RTS
STMOD#8-MOSIs
STMOD#9-MISOs
STMOD#11-INT
STMOD#12-RST
STMOD#13-ADC
STMOD#14-PWM
STMOD#17
STMOD#18
STMOD#19
STMOD#20
LED2
LED1
LEDs
LED2
LED1
FDCAN1_RX
FDCAN1_TX
FDCAN
FDCAN1_TX FDCAN1_RX
FDCAN2_TX FDCAN2_RX
FDCAN2_RX
FDCAN2_TX
FDCAN1_RX
FDCAN1_TX
FDCAN2_RX
FDCAN2_TX
Buttons
PC13
3V3
Wakeup & Key Button
WAKEUP
WAKEUP
STMOD#1_SPI_CS
STMOD#1_SPI_CSSTMOD#1_SPI_CS
SDRAM_D0 SDRAM_D1
SDRAM_D2 SDRAM_D3
SDRAM_D4 SDRAM_D5 SDRAM_D6 SDRAM_D7 SDRAM_D8 SDRAM_D9 SDRAM_D10 SDRAM_D11 SDRAM_D12
SDRAM_D13 SDRAM_D14 SDRAM_D15
3V3
3V3
SB4 SB3
GREEN
LD7
RED
LD6
510R
R233
680R
R232
1K5
R67
1K5
R64
0R
R93
0R
R98
NX3215SA-32.768K
X2
1.5pF
C62
1.5pF
C70
10K
R76
10K
R143 R144
N/A
DNF
10K
R102
R103 N/A
DNF
TD0341X-G01-BLA
1 3
42
B2
BLUEHAT
HW13
TD0341X-G01-BLU
1
3
4
2
B1
BLACKHAT
HW12
100nF
C50
100nF
C181
51RR79
12
ESDA7P60-1U1M
U32
12
ESDA7P60-1U1M
U31
C182 N/A
DNF
100R
R231
330R
R230
220K
R229
USB_OTG_FS2_P
USB_OTG_FS2_N USB_OTG_FS2_P
VBUS_FS2
SDRAM_SDCKE1
SDA
SCL
I2C
DATA
CLK
PDM
ARD_D10
LCD_RST
OSC_25M
OSC_25M
OSC_25M
VDD4OUT
3
EN1GND
2
25MHz
X1
51RR83
33RR86 33RR84
33RR55 33RR61 33RR59 33RR51
33RR73 33RR70
33RR106 33RR107
33RR46 33RR45 33RR21 33RR19 33RR74 33RR23 33RR43 33RR44 33RR63
33RR108 33RR110 33RR111 33RR109 33RR114 33RR112
33RR26
33RR24
33RR75
33RR37 33RR17 33RR20 33RR16 33RR47 33RR18
33RR50 33RR48
33RR78 33RR77 33RR81
33RR80 33RR105
33RR25 33RR113
33RR40 33RR38
33RR22 33RR42 33RR49
33RR41
33RR39
33RR100
33RR101 33RR104 33RR115
SB24
T_JTDI
T_JTDI
T_JTDI
PE5
D1
PC1
M2
PC2
M3
PC3
M4
PF9
L4
PA2
N3
PA1
N4
PA6
R3
PA0
N5
PA7
R5
PB11
P12
PD11
R15
PC6
F14
PA8
E15
PA9
D15
PA13(JTMS/SWDIO)
C15
PA15(JTDI)
A14
PC10
A13
PA14(JTCK/SWCLK)
B14
PC11
B13
PD4
A12
PB6
B5
PE1
B4
PF2
G1
PE6
E5
PF13
P7
PB2
R6
PF12
R7
PC7
F13
PB3(JTDO/TRACESWO)
C6
PB7
C5
PE0
C4
PA12
E16
PA11
E17
PD14
P16
PD12
R16
PD13
R17
PA5
T3
PC4
T4
PB1
T5
PF11
T7
PE8
T9
PE13
T10
PB12
T14
PB15
T15
PD10
T16
PD9
T17
PA3
U2
PA4
U3
PC5
U4
PB0
U5
PE7
U9
PE14
U10
PB13
U14
PB14
U15
PD8
U16
PE4
D2
PF7
K3
PF6
K2
PF10
L3
PC0
L2
PF8
K4
PF5
J4
PF3
H4
PF14
P8
PE10
N9
PE9
P9
PF15
R9
PE11
P10
PE12
R10
PB10
P11
PE15
R11
PD15
P15
PD1
E12
PC8
E13
PD0
D13
PB4(NJTRST)
B7
PB5
A5
PD3
B12
PC12
C12
PD2
D12
PD7
C11
PD6
B11
PD5
A11
PC14-OSC32_IN
C2
PB8
D5
PC9
E14
PA10
D14
PE2
C3
PE3
D3
PB9
D4
PC13
E3
PF1
G3
PF0
G4
PC15-OSC32_OUT
C1
PF4
J5
STM32H745XIH6
U6A
NRST
K1
PG3
H15
PG6
G15
PG5
G14
PG8
F15
PG9
A10
PG10
A9
PG11
B9
PG12
C9
PG14
D8
PG7
F16
PG2
H16
PG0
T8
PG1
U8
PG4
H14
PG13
D9
PG15
D6
PH2
N2
PH3
P2
PH5
P4
PH4
P3
PH9
R13
PH12
R14
PH1-OSCOUT
J1
PH15
B16
PH14
B17
PH13
D16
PH6
T11
PH8
T13
PH7
U13
PH0-OSCIN
J2
PH10
P13
PH11
P14
PI15
P5
PJ11
K14
PI2
B15
PI1
A15
PK5
A8
PI12
H1
PJ9
M14
PJ15
B10
PJ14
D10
PK7
D7
PI0
A16
PK2
H17
PJ2
T6
PJ3
U6
PJ4
U7
PI5
A3
PI6
A2
PI9
E2
PI13
H2
PJ0
N6
PJ1
P6
PJ5
R12
PJ8
N13
PJ7
N14
PJ6
N15
PK1
J15
PK0
J14
PK3
C8
PK4
B8
PK6
C7
PI7
B3
PI4
A4
PJ10
L14
PJ12
D11
PI8
E4
PI10
F3
PI3
C14
PI14
H3
PJ13
E10
PI11
F4
PC3_C
R2
PA0_C
T1
PA1_C
T2
PC2_C
R1
DSI_CK_P
L16
DSI_CK_N
L17
DSI_D0_P
M16
DSI_D0_N
M17
DSI_D1_P
K16
DSI_D1_N
K17
PDR_ON
E7
BOOT0
E8
STM32H745XIH6
U6B
QSPI_BK2_NCS
SB47
Q S P I
_ B K 2 _ N C S
UM2488 - Rev 4
Figure 14. STM32H745XI microcontroller I/Os
page 31/55
Electrical schematics
UM2488
Page 32
3 19
STM32 microcontroller IOs
Title:
Size:
Reference: Sheet: ofA3
Revision:
Project: STM32H745I -Disco
MB1381B 01
11-JUNE-18
H750XB
Date:
-
Variant:
SDRAM
SDRAM_D[0..15]
SDRAM_A[0..11]
SDRAM
SDRAM_A[0..11]
SDRAM__SDNCAS
SDRAM_NBL0
SDRAM_SDNE1
SDRAM_SDCKE1
SDRAM_D[0..15]
SDRAM_NBL1
SDRAM_BA0 SDRAM_BA1
SDRAM_NWE
SDRAM_CLK
SDRAM__SDNRAS
SDRAM
SDRAM_NBL0 SDRAM_NBL1
SDRAM_BA0 SDRAM_BA1
SDRAM_SDCKE1
SDRAM_SDNE1
SDRAM_SDNRAS
SDRAM_SDNCAS
SDRAM_SDNWE SDRAM_SDCLK
SDRAM_SDNWE
SDRAM_SDNRAS
SDRAM_BA0 SDRAM_BA1
SDRAM_SDCLK
SDRAM_SDNCAS
SDRAM_NBL0 SDRAM_NBL1
SDRAM_SDNE1
SDRAM_A0 SDRAM_A1 SDRAM_A2 SDRAM_A3 SDRAM_A4 SDRAM_A5
SDRAM_A6 SDRAM_A7 SDRAM_A8 SDRAM_A9
SDRAM_A10 SDRAM_A11
LCD_R[0..7] LCD_G[0..7]
LCD_B[0..7] LCD_HSYNC LCD_VSYNC
LCD_DE LCD_DISP LCD_CLK
LCD_INT
LCD_BL
LCD_RST
LCD
LCD_R[0..7]
LCD
LCD_G[0..7] LCD_B[0..7] LCD_HSYNC LCD_VSYNC
LCD_CLK
LCD_DE LCD_DISP
LCD_INT
IIC4_SDA
IIC4_SCL
LCD_BL
LCD
LCD_B0
LCD_G0
LCD_R0
LCD_R1 LCD_R2
LCD_R3
LCD_R4 LCD_R5 LCD_R6 LCD_R7
LCD_G1 LCD_G2 LCD_G3 LCD_G4
LCD_G5 LCD_G6
LCD_G7
LCD_B1 LCD_B2 LCD_B3
LCD_B4 LCD_B5 LCD_B6 LCD_B7
LCD_HSYNC
LCD_VSYNC
LCD_CLK
LCD_DE
LCD_DISP
LCD_RST
LCD_INT
LCD_BL
QSPI
QSPI_IO1
QSPI_IO0
QSPI_CLK
QSPI_CS1
QSPI_IO2 QSPI_IO3
QSPI_IO5
QSPI_IO4
QSPI_IO6 QSPI_IO7
QSPI_CS2
QSPI
QSPI_BK1_IO0 QSPI_BK1_IO1 QSPI_BK1_IO2 QSPI_BK1_IO3
QSPI_BK1_NCS
QSPI_CLK
QSPI_BK2_IO0 QSPI_BK2_IO1 QSPI_BK2_IO2 QSPI_BK2_IO3
QSPI
QSPI_BK1_IO0
QSPI_BK1_IO1
QSPI_BK1_IO2
QSPI_BK1_IO3
QSPI_BK1_NCS
QSPI_CLK
QSPI_BK2_IO0 QSPI_BK2_IO1
QSPI_BK2_IO2
QSPI_BK2_IO3
SDIO1_D[0..7]
eMMC
SDIO1_D[0..7]
SDIO1_CMD
SDIO1_CK
eMMC
SDIO1_CK SDIO1_CMD
eMMC
SDIO1_D0 SDIO1_D1 SDIO1_D2
SDIO1_D3
SDIO1_D4 SDIO1_D5
SDIO1_D6 SDIO1_D7
SDIO1_CK
SDIO1_CMD
Audio
SAI_SDB
SAI_FSA
Audio_Int
SAI_SDA
SAI_SCKA
SAI_MCKA
SAI
Audio
SAI2_MCLKA
SAI2_SCKA SAI2_FSA SAI2_SDA SAI2_SDB Audio_Int
PDM
SAI4_CK2
SAI4_D2
SAI2_MCLKA SAI2_SCKA
SAI2_FSA
SAI2_SDA
SAI2_SDB
Audio_Int
SAI4_CK2
SAI4_D2
MII_TXD0
MII_TX_EN
MII_TX_CLK
MII_RXD0
MII_RX_ER MII_RX_DV
MII_RX_CLK
MII_COL MII_CRS
MII_TXD1 MII_TXD2 MII_TXD3
MII_RXD1 MII_RXD2 MII_RXD3
MII_TX_ER/nINT
MII_MDC MII_MDIO
Ethernet
MII_TX_CLK
MII_TX_EN
MII_TXD0
MII_TXD1
MII_TXD2
MII_TXD3
MII_RXD0
MII_RXD1
MII_RXD2
MII_RXD3
MII_RX_ER
MII_RX_DV
MII_RX_CLK
MII_COL
MII_CRS
MII_MDC
MII_MDIO
MII_TX_ER/nINT
MII_TX_CLK
MII_TX_EN
MII_TXD0
MII_TXD1
MII_TXD2
MII_TXD3
MII_RXD0 MII_RXD1
MII_RXD2 MII_RXD3
MII_RX_ER
MII_RX_DV
MII_RX_CLK
MII_COL
MII_CRS
MII_MDC
MII_MDIO
MII_TX_ER/nINT
SWDIO
SWCLK
SWO
VCP_RX
VCP_TX
DEBUG
SWDIO
SWCLK
SWO
VCP_RX VCP_TX
SWDIO SWCLK
SWO
VCP_RX
VCP_TX
I2C4
ARD_D5 ARD_D4 ARD_D3 ARD_D2 ARD_D1 ARD_D0
ARD_D13 ARD_D12 ARD_D11 ARD_D10
ARD_D9 ARD_D8
ARD_D6
ARD_D7
ARD_A0 ARD_A1 ARD_A2 ARD_A3 ARD_A4 ARD_A5
Ethernet
IIC4_SDA IIC4_SCL
ARD_A0 ARD_A1 ARD_A2 ARD_A3 ARD_A4 ARD_A5
ARD_D0
ARD_D1
ARD_D2
ARD_D3
ARD_D4
ARD_D5
ARD_D6
ARD_D7
ARD_D8
ARD_D9
ARD_D10
ARD_D11
ARD_D12
ARD_D13
ARD_A0
ARD_A1
ARD_A2 ARD_A3
ARD_A4 ARD_A5
ARD_D0
ARD_D1
ARD_D2
ARD_D3
ARD_D4
ARD_D5
ARD_D6
ARD_D7
ARD_D8
ARD_D9ARD_D11
ARD_D12
ARD_D13
RESET
BOOT0
3V3
3V3
3V3
Capacitor close to MCU
RESET
RESET
OTG_FS2_PSO
OTG_FS2_OverCurrent
USB_FS2_DM USB_FS2_DP
USB_FS2_ID
OTG_FS
OTG_FS2_PSO OTG_FS2_OverCurrent
USB_OTG_FS2_N
USB_FS2_ID
OTG_FS2_PSO
OTG_FS2_OverCurrent
USB_FS2_ID
STMOD#11-INT
STMOD#12-RST
STMOD#2-TX
STMOD#3-RX
STMOD#8-MOSIs
STMOD#9-MISOs
STMOD#13-ADC
STMOD#14-PWM
STMOD#17
STMOD#18
STMOD#19
STMOD#20
STMOD#1-CTS
STMOD#4-RTS
STMod+
STMOD#1-CTS
STMOD#2-TX
STMOD#3-RX
STMOD#4-RTS
STMOD#8-MOSIs
STMOD#9-MISOs
STMOD#11-INT
STMOD#12-RST
STMOD#13-ADC
STMOD#14-PWM
STMOD#17
STMOD#18
STMOD#19
STMOD#20
STMOD#1-CTS
STMOD#2-TX STMOD#3-RX
STMOD#4-RTS
STMOD#8-MOSIs
STMOD#9-MISOs
STMOD#11-INT
STMOD#12-RST
STMOD#13-ADC
STMOD#14-PWM
STMOD#17
STMOD#18
STMOD#19
STMOD#20
LED2
LED1
LEDs
LED2
LED1
FDCAN1_RX
FDCAN1_TX
FDCAN
FDCAN1_TX FDCAN1_RX
FDCAN2_TX FDCAN2_RX
FDCAN2_RX
FDCAN2_TX
FDCAN1_RX
FDCAN1_TX
FDCAN2_RX
FDCAN2_TX
Buttons
PC13
3V3
Wakeup & Key Button
WAKEUP
WAKEUP
STMOD#1_SPI_CS
STMOD#1_SPI_CSSTMOD#1_SPI_CS
SDRAM_D0 SDRAM_D1
SDRAM_D2 SDRAM_D3
SDRAM_D4 SDRAM_D5 SDRAM_D6 SDRAM_D7 SDRAM_D8 SDRAM_D9 SDRAM_D10 SDRAM_D11 SDRAM_D12
SDRAM_D13 SDRAM_D14 SDRAM_D15
3V3
3V3
SB4 SB3
GREEN
LD7
RED
LD6
510R
R233
680R
R232
1K5
R67
1K5
R64
0R
R93
0R
R98
NX3215SA-32.768 K
X2
1.5pF
C62
1.5pF
C70
10K
R76
10K
R143
R144 N/A
DNF
10K
R102
R103 N/A
DNF
TD0341X-G01-BLA
1 3
42
B2
BLUE HAT
HW13
TD0341X-G01-BLU
1
3
4
2
B1
BLACK HAT
HW12
100nF
C50
100nF
C181
51RR79
12
ESDA7P60-1U1M
U32
1
2
ESDA7P60-1U1M
U31
C182 N/A
DNF
100R
R231
330R
R230
220K
R229
USB_OTG_FS2_P
USB_OTG_FS2_N USB_OTG_FS2_P
VBUS_FS2
SDRAM_SDCKE1
SDA SCL
I2C
DATA
CLK
PDM
ARD_D10
LCD_RST
OSC_25M
OSC_25M
OSC_25M
VDD4OUT
3
EN1GND
2
25MHz
X1
51RR83
33RR86 33RR84
33RR55 33RR61 33RR59 33RR51
33RR73 33RR70
33RR106 33RR107
33RR46 33RR45 33RR21 33RR19 33RR74 33RR23 33RR43 33RR44 33RR63
33RR108 33RR110 33RR111 33RR109 33RR114 33RR112
33RR26
33RR24
33RR75
33RR37 33RR17 33RR20 33RR16 33RR47 33RR18
33RR50 33RR48
33RR78 33RR77 33RR81
33RR80 33RR105
33RR25 33RR113
33RR40 33RR38
33RR22 33RR42 33RR49
33RR41
33RR39
33RR100
33RR101 33RR104 33RR115
SB24
T_JTDI
T_JTDI
T_JTDI
PE5
D1
PC1
M2
PC2
M3
PC3
M4
PF9
L4
PA2
N3
PA1
N4
PA6
R3
PA0
N5
PA7
R5
PB11
P12
PD11
R15
PC6
F14
PA8
E15
PA9
D15
PA13(JTMS/SWDIO)
C15
PA15(JTDI)
A14
PC10
A13
PA14(JTCK/SWCLK)
B14
PC11
B13
PD4
A12
PB6
B5
PE1
B4
PF2
G1
PE6
E5
PF13
P7
PB2
R6
PF12
R7
PC7
F13
PB3(JTDO/TRACESWO)
C6
PB7
C5
PE0
C4
PA12
E16
PA11
E17
PD14
P16
PD12
R16
PD13
R17
PA5
T3
PC4
T4
PB1
T5
PF11
T7
PE8
T9
PE13
T10
PB12
T14
PB15
T15
PD10
T16
PD9
T17
PA3
U2
PA4
U3
PC5
U4
PB0
U5
PE7
U9
PE14
U10
PB13
U14
PB14
U15
PD8
U16
PE4
D2
PF7
K3
PF6
K2
PF10
L3
PC0
L2
PF8
K4
PF5
J4
PF3
H4
PF14
P8
PE10
N9
PE9
P9
PF15
R9
PE11
P10
PE12
R10
PB10
P11
PE15
R11
PD15
P15
PD1
E12
PC8
E13
PD0
D13
PB4(NJTRST)
B7
PB5
A5
PD3
B12
PC12
C12
PD2
D12
PD7
C11
PD6
B11
PD5
A11
PC14-OSC32_IN
C2
PB8
D5
PC9
E14
PA10
D14
PE2
C3
PE3
D3
PB9
D4
PC13
E3
PF1
G3
PF0
G4
PC15-OSC32_OUT
C1
PF4
J5
STM32H750XBH6
U6A
NRST
K1
PG3
H15
PG6
G15
PG5
G14
PG8
F15
PG9
A10
PG10
A9
PG11
B9
PG12
C9
PG14
D8
PG7
F16
PG2
H16
PG0
T8
PG1
U8
PG4
H14
PG13
D9
PG15
D6
PH2
N2
PH3
P2
PH5
P4
PH4
P3
PH9
R13
PH12
R14
PH1-OSCOUT
J1
PH15
B16
PH14
B17
PH13
D16
PH6
T11
PH8
T13
PH7
U13
PH0-OSCIN
J2
PH10
P13
PH11
P14
PI15
P5
PJ11
K14
PI2
B15
PI1
A15
PK5
A8
PI12
H1
PJ9
M14
PJ15
B10
PJ14
D10
PK7
D7
PI0
A16
PK2
H17
PJ2
T6
PJ3
U6
PJ4
U7
PI5
A3
PI6
A2
PI9
E2
PI13
H2
PJ0
N6
PJ1
P6
PJ5
R12
PJ8
N13
PJ7
N14
PJ6
N15
PK1
J15
PK0
J14
PK3
C8
PK4
B8
PK6
C7
PI7
B3
PI4
A4
PJ10
L14
PJ12
D11
PI8
E4
PI10
F3
PI3
C14
PI14
H3
PJ13
E10
PI11
F4
PC3_C
R2
PA0_C
T1
PA1_C
T2
PC2_C
R1
DSI_CK_P
L16
DSI_CK_N
L17
DSI_D0_P
M16
DSI_D0_N
M17
DSI_D1_P
K16
DSI_D1_N
K17
PDR_ON
E7
BOOT0
E8
STM32H750XBH6
U6B
QSPI_BK2_NCS
SB47
QSPI_BK2_NCS
UM2488 - Rev 4
Figure 15. STM32H750XB microcontroller I/Os
page 32/55
Electrical schematics
UM2488
Page 33
4 19
STM32 microcontroller Power
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
5V
3V3
3V3 VDD_MCU
VDD_MCU
VDDA
VREF+
VDD_MCU
3V3
VREF+ VDDA
VDD_MCU
VDD_MCU
VDD_MCU 3V3
1V8
VDD_MCU
VIN E5V
GND-SD
VDD_MCU
2.2uFC18
2.2uFC75
2.2uFC79
DNF
100nF
C99
100nF
C57
100nF
C95
100nF
C85
100nF
C88
100nF
C87
100nF
C45
100nF
C100
100nF
C96
100nF
C55
100nF
C40
100nF
C46
100nF
C31
100nF
C27
100nF
C29
100nF
C54
100nF
C33
100nF
C42
100nF
C43
100nF
C39
100nF
C36
100nF
C44
100nF
C168
0R
R66
LD1117S50TR
Vin3Vout
2
Gnd
1
Tab
4
U17
10uF
C154
10uF
C156
Shunt Fitted
JP1
TP5
TP1
TP2SB1
SB5 SB18
SB15
SB23
SB27
SB26
SB17
SB6
1uF
C53 10uF
C155
1uF
C41
10uF
C35
4.7uF
C77
4.7uF
C172
10uF
C161
4.7uF(N/A)C78
DNF
4.7uFC63
FCM1608KF-601T03
L2
TP3
HW14
GND-SD
2.2uHL4
NC
1
GND
6
VO
2
NC
5
GND
EP
VI
3
NC
4
ST1L05APU33R
U20
Vin3Vout
2
GND1Tab
4
LD1117S18TR
U18
5V
VREF+
VREF+
C24 N/A
DNF
R29 N/A
DNF
C25
N/A
DNF
4.7uFC16
VIN
1
EN
2
SS
3
FILT4OUT_S
5
OUT_F
6
GND_F
7
GND_S
8
REF6225IDGKT
U3
DNF
VREF-
N1
VREF+
M1
VSSA
P1
VDD
E11
VSS
L10
VDD
K13
VSSSMPS
F2
VSS
R8
VSS
G16
VDD
G5
VDD
H5
VDD
E9
VDD
F5
VSS
T12
VDD
M13
VSSDSI
K15
VSSDSI
M15
VSS
K11
VSS
J17
VDD
G13
VDD
N12
VSS
C10
VCAP
A7
VDDIOSMPS
F1
VDD
N7
VDD
J13
VDD
H13
VSS
B6
VDDIO33_LDO
C17
VCAP
D17
VDDUSB33
F17
VSSDSI
L15
VDD50USB
G17
VSS
L7
VSS
L8
VSS
J3
VSS
J16
VSS
N16
VSS
U17
VSS
L11
VSS
K10
VCAPDSI
N17
VDDDSI
P17
VCAP
U11
VDDIO33_LDO
U12
VSS
A1
VBAT
B1
VSS
B2
VDDA
L1
VSS
L9
VDD
N10
VDD
N11
VDD
K5
VDDIO33_LDO
A6
VDD
L5
VDD
L13
VSS
C13
VSS
C16
VFBSMPS
G2
VLXSMPS
E1
VDD
M5
VDD
E6
VSS
A17
VDD
N8
VSS
U1
VSS
R4
VSS
G7
VSS
G8
VSS
G9
VSS
G10
VSS
G11
VSS
H7
VSS
H8
VSS
H9
VSS
H10
VSS
H11
VSS
J7
VSS
J8
VSS
J9
VSS
J10
VSS
J11
VSS
K7
VSS
K8
VSS
K9
STM32H745XIH6
U6C
220pFC184
SB43
VDD_MCU
10uF
C52
10uFC185
VDD_SDC
SB44 SB45
VDD_SDC
NOTE : (H745XI defaultsetting is SMPSmode, and H750XB onlysupports LDO mode) LDO mode:
SB6, SB17, SB45mounted, SB5, SB18, SB26,SB27,SB44, SB46,L4re moved SMPS mode (default): SB5, SB18, SB44,SB46, L4 mouned, SB6, SB17, SB27, SB26,SB45removed SMPS +LDO mode SB6, SB17, SB44,SB46,L4 mouned, SB26,SB5,SB18,SB27,SB45 removed
NOTE : place C185,SB46near L4
SB46
Ceramic capacitor (LowESR <600m ohm)
C186 N/A
DNF
TP6
C187
N/A
DNF
FBMJ1608HM180NTR
L3
UM2488 - Rev 4
page 33/55
Figure 16. STM32H745XI microcontroller power
Electrical schematics
UM2488
Page 34
4 19
STM32 microcontro ller Power
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project: STM32H7 45I-Disco
MB1381B 01
11-JUNE-18
H750XB
Date:
-
Variant:
5V
3V3
3V3 VDD_MCU
VDD_MCU
VDDA
VREF+
VDD_MCU
3V3
VREF+ VDDA
VDD_MCU
VDD_MCU
VDD_MCU 3V3
1V8
VDD_MCU
VIN E5 V
GND-SD
VDD_MCU
2.2uFC18
2.2uFC75
2.2uFC79
DNF
100nF
C99
100nF
C57
100nF
C95
100nF
C85
100nF
C88
100nF
C87
100nF
C45
100nF
C100
100nF
C96
100nF
C55
100nF
C40
100nF
C46
100nF
C31
100nF
C27
100nF
C29
100nF
C54
100nF
C33
100nF
C42
100nF
C43
100nF
C39
100nF
C36
100nF
C44
100nF
C168
0R
R66
LD1117S50T R
Vin3Vout
2
Gnd
1
Tab
4
U17
10uF
C154
10uF
C156
Shunt Fitted
JP1
TP5
TP1
TP2SB1
SB15
SB23
SB27
SB26
1uF
C53 10uF
C155
1uF
C41
10uF
C35
4.7uF
C77
4.7uF
C172
10uF
C161
4.7uF(N/A)
C78
DNF
4.7uF
C63
FCM1608KF-601T0 3
L2
TP3
HW14
GND-SD
2.2uHL4
DNF
NC
1
GND
6
VO
2
NC
5
GND
EP
VI
3
NC
4
ST1L05APU33 R
U20
Vin3Vout
2
GND1Tab
4
LD1117S18T R
U18
5V
VREF+
VREF+
C24
N/A
DNF
R29 N/A
DNF
C25 N/A
DNF
4.7uFC16
VIN
1
EN
2
SS
3
FILT4OUT_S
5
OUT_F
6
GND_F
7
GND_S
8
REF6225IDGKT
U3
DNF
VREF-
N1
VREF+
M1
VSSA
P1
VDD
E11
VSS
L10
VDD
K13
VSSSMPS
F2
VSS
R8
VSS
G16
VDD
G5
VDD
H5
VDD
E9
VDD
F5
VSS
T12
VDD
M13
VSSDSI
K15
VSSDSI
M15
VSS
K11
VSS
J17
VDD
G13
VDD
N12
VSS
C10
VCAP
A7
VDDIOSMPS
F1
VDD
N7
VDD
J13
VDD
H13
VSS
B6
VDDIO33_LD O
C17
VCAP
D17
VDDUSB33
F17
VSSDSI
L15
VDD50USB
G17
VSS
L7
VSS
L8
VSS
J3
VSS
J16
VSS
N16
VSS
U17
VSS
L11
VSS
K10
VCAPDSI
N17
VDDDSI
P17
VCAP
U11
VDDIO33_LD O
U12
VSS
A1
VBAT
B1
VSS
B2
VDDA
L1
VSS
L9
VDD
N10
VDD
N11
VDD
K5
VDDIO33_LD O
A6
VDD
L5
VDD
L13
VSS
C13
VSS
C16
VFBSMPS
G2
VLXSMPS
E1
VDD
M5
VDD
E6
VSS
A17
VDD
N8
VSS
U1
VSS
R4
VSS
G7
VSS
G8
VSS
G9
VSS
G10
VSS
G11
VSS
H7
VSS
H8
VSS
H9
VSS
H10
VSS
H11
VSS
J7
VSS
J8
VSS
J9
VSS
J10
VSS
J11
VSS
K7
VSS
K8
VSS
K9
STM32H750XBH 6
U6C
220pFC184
SB43
VDD_MCU
10uF
C52
10uF
C185
VDD_SDC
SB45
SB44
VDD_SDC
NOTE :
LDO mode: SB6, SB17, SB45 mo unted, SB5, SB18, SB26,SB2 7,SB44, SB46,L4 removed SMPS mode (default): SB5, SB18, SB44, SB4 6, L4 mouned, SB6, SB17 , SB27, SB26,SB45 removed SMPS +LDO mode SB6, SB17, SB44, SB4 6,L4 mouned, SB26,SB5,SB18,SB27,SB4 5 removed
NOTE : place C1 85,SB46 near L4
Ceramic capacitor (Lo w ESR <600m ohm)
C186
N/A
DNF
TP6
C187 N/A
DNF
FBMJ1608HM180NT R
L3
SB6 SB17
SB18
SB5
SB46
UM2488 - Rev 4
page 34/55
Figure 17. STM32H750XB microcontroller power
Electrical schematics
UM2488
Page 35
5 19
Ethernet
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
MII_TXD0
MII_TX_EN
MII_TX_CLK
MII_RXD0
MII_RX_ER
MII_RX_DV
MII_RX_CLK
MII_COL
MII_CRS
RESET#
MII_TXD1 MII_TXD2 MII_TXD3
MII_RXD1
MII_RXD2
MII_RXD3
MII_TX_ER/nINT
PC3 PG11 PG13 PG12 PC2 PE2
PC4
PC5
PB0
PB1
PI10
PA7
PH2 PH3
PA1
MII_MDC
MII_MDIO
PC1
PA2
LED_G_A
LED_G_K
LED_Y_A
LED_Y_K
RD_P
TD_N
TD_P
RD_N
PoE PoE.SchDoc
100nF
C56
PB2
12K1R96
49.9R
R91
49.9R
R90
49.9R
R88
49.9R
R89
3V3
100nF
C71
100nF
C69
1uF
C89
100nF
C97
3V3
330R
R7
10K
R94
330R
R95
0RR122
OSC_25M
470pF
C86
1K5R134
3V3
4K7
R127
Note: RemoveR127 and keep R123 when nINT function is enabled. TXER is disabled RemoveR123 and keep R127 when nINT function is disabled.TXER is enabled
100RR120
100RR137 100RR141
VDD2A
1
LED2/nINT/nPME/nINTSEL
2
LED1/nINT/nPME/REGOFF
3
XTAL2
4
XTAL1/CLKIN
5
VDDCR
6
RXCLK/PHYAD1
7
RXD3/PHYAD2
8
RXD2/nPME/RMIISE;
9
RXD1/MODE1
10
RXD0/MODE0
11
VDDIO
12
RXER/RXD4/PHYAD0
13
CRS
14
COL/CRS_DV/MODE2
15
MDIO
16
MDC
17
nINT/TXER/TXD4
18
nRST
19
TXCLK
20
TXEN
21
TXD0
22
TXD1
23
TXD2
24
TXD3
25
RXDV
26
VDD1A
27
TXN
28
TXP
29
RXN
30
RXP
31
RBIAS
32
EP
33
LAN8740Ai-EN-TR
U9
100RR136
100RR97
100RR140
100RR139
100RR138
100RR146
100RR133
VDD_ETH
VDD_ETH
10pF
C68
10pF
C67
10pF
C65
10pF
C66
R123 N/A
DNF
3V3
LED2_ETH
SB25
SB28
LED2_ETH
SB22
SB14
Note: keep R94 to enable the TXER function,and close SB22,SB28,openSB14,SB25 for LED2
RemoveR94 and SB14 to enable nINT founction, and close SB14,SB25,open SB22,SB28 for LED2
R119 N/A
DNF
4K7 R169
3V3
PHY Address: 01h
R1
67
N
/
A
DNF
R168N/A
DNF
R1
70N
/A
DNF
R166 N/A
DNF
120ohm
L5
i
MII
i
MII
Matched Net Lengths[Tolerance = 100mil]
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
UM2488 - Rev 4
Figure 18. Ethernet
page 35/55
Electrical schematics
UM2488
Page 36
6 19
PoE
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
Power Over Ethernet
Chassis
Chassis
Chassis
INPUT
5V_POE
5V_POE
LED_G_K
LED_G_A
LED_Y_A
Chassis
TD_N
TD_P
RD_N
RD_P
LED_G_K
LED_G_A
LED_Y_A LED_Y_K
LED_G_A LED_G_K LED_Y_A LED_Y_K
TD_N
TD_P
RD_N
RD_P
RD_P
TD_N
TD_P
RD_N
i
DiffPair 100ohm
Matched Net Lengths[Tolerance = 100mil]
i
DiffPair 100ohm
Matched Net Lengths[Tolerance = 100mil]
i
DiffPair 100ohm
Matched Net Lengths[Tolerance = 100mil]
i
DiffPair 100ohm
Matched Net Lengths[Tolerance = 100mil]
LED_Y_K
AGND
NOTE : The AGNDis a dedicated plan. The resistor 0 ohm mustbe very closeto pin 9
NOTE : Place for additional ferrite beads
POE1
POE2
POE3
POE4 POE5
POE6
POE7 POE8
POE1
POE5 POE6
POE7
POE8
POE2
POE3
POE4
RX+
3
NC
5
NC
4
NC
7
RX-
6
NC
8
LED(Yellow)_A
10
LED(Yellow)_K
9
LED(Green)_K
11
LED(Green)_A
12
TX+
1
TX-
2
SH1
SH1
SH2
SH2
KRJ-CB4.2GYZNL
CN1
0R_0805
R13
0R_0805
R12
0R_0805
R82
75KR131
10K
R10
0R
R99
0R_0805
R72
10K
R87
1K
R57
1KR68
0R_0805
R34
0R_0805R1
13K
R52
13K
R33
20K
R35
0R
R4
10K
R58
1
2
3 6
7
89
10
11
14
15
16
H2019NL
T3
100nF, 100V
C6
1nF, 100V
C20
1nF, 100V
C17
1nF, 100V
C22
1nF, 100V
C19
1nF, 100V
C13
1nF, 100V
C8
1nF, 100V
C23
1nF, 100V
C91
1nF, 100V
C82
-
+
2
3
1
4
~ ~
DF01S
D4
-
+
2
3
1
4
~ ~
DF01S
D5
4
1
2
3 7
5
8
6
Pri
Bias
Sec
POE30P-50L
T2
SMAJ58A-TR
D1
75R
R27
75R
R11
75R
R15
75R
R28
2
4
3
1 5
7
6
8
Pri
Bias
Sec
T1 N/A
DNF
5.6uH
L1
4.7uF, 100V
C1
4.7uF, 100V
C2
4.7uF, 100V
C21
BAT46JFILM
D2
BAT46JFILM
D6
STPS2L40UF
D3
4 1
23
HMHA2801A
U4
K
3
A
5
REF
4
NC1N
C
2
TS431AILT
U5
RT
1
SS
2
AUXII
3
VIN
4
CS
13
COMP
14
VFB
15
AGND
16
RCLASS
5
AUXI_IRL
6
DCCL
7
GND
9
GD
10
VCC
11
nPGD
12
E
PA
D
E
P
VSS
8
PM8800ATR
U8
1
3
2
4
STN4NF20L
T4
10R
R32
10nF, 100V
C93
10nF, 100V
C92
100nF, 50V
C90
100nF, 50V
C59
100nF, 50V
C60
100nF, 50V
C30
124KR118
1uF, 25V
C61
1uF, 25V
C26
2K
R129
470pF, 100V
C58
56RR71
C14 N/A
DNF
68RR5
15RR8560pF
C12
47uF
C5 47uF
C3 47uF
C4
47uF
C11
100nF
C7
510R
R92
1nF
C37
10nF, 50V
C34
100pF, 50V
C28
22nF, 50V
C32
1nF
C10
100nF, 100V
C9
22nF, 50V
C51
VDD_ETH
200R(N/A)R6
DNF
0R47
R85
STPS1H100A
D7
NOTE : thisdiode must be placed close the pin 8 and 9
UM2488 - Rev 4
Figure 19. Power over Ethernet (PoE)
page 36/55
Electrical schematics
UM2488
Page 37
7 19
USB OTG FS
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
5V
OTG_FS2_PSO
OTG_FS2_OverCurrent
3V3
USB_FS2_DM USB_FS2_DP USB_FS2_ID
PA9
PA10
PA11 PA12
3V3
4.7uF
C173
0R
R212
0R
R211
10K
R213
IN5OUT
1
GND
2
EN4FAULT
3
STMPS2151
U23
GREEN
LD1
RED
LD5
47K
R214
47K
R221
22K
R220
330R
R219
3
1
2
9013-SOT23
Q1
VBUS_FS2
PA5
PH11
620R
R228
VBUS
1
DM
2
DP
3
ID
4
GND
5
Shield
6
US
B_M
i
c
ro
-
AB recept acle
Shield
7
Shield
8
Shield
9
EXP
10
47590-0001
CN13
I/O1
1
GND
2
I/O23I/O3
4
VBUS
5
I/O4
6
USBLC6-4SC6
U25
UM2488 - Rev 4
page 37/55
Figure 20. USB OTG_FS
Electrical schematics
UM2488
Page 38
8 19
FDCAN
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
FDCAN1_TX
FDCAN1_RX
PH13
5V
3V3
FDCAN2_TX
FDCAN2_RX
PB13
PB5
5V
3V3
100nF
C171
100nF
C170
100nF
C174
100nF
C176
TXD
1
VSS
2
VDD
3
RXD4VIO
5
CANL
6
CANH
7
STBY
8
MCP2562FDT-H/ SN
U22
TXD
1
VSS
2
VDD
3
RXD4VIO
5
CANL
6
CANH
7
STBY
8
MCP2562FDT-H/ SN
U21
10K
R225
10K
R223
JP6
JP7
120R
R224
120R
R222
PH14
3
1
2
ESDCAN02-2BWY
U30
3
1
2
ESDCAN02-2BWY
U29
1 2
CN11
1 2
CN10
UM2488 - Rev 4
Figure 21. FDCAN
page 38/55
Electrical schematics
UM2488
Page 39
9 19
SDRAM
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
Place close SDRAM
SDRAM_SDNWE
SDRAM_SDNRAS
SDRAM_BA0
SDRAM_BA1
SDRAM_SDCLK
SDRAM_SDNCAS
3V3
SDRAM_D0
SDRAM_NBL0
SDRAM_NBL1
SDRAM_SDNE1
SDRAM_D[0..15]
SDRAM_A[0..11]
SDRAM
SDRAM_A[0..11]
SDRAM__SDNCAS
SDRAM_NBL0
SDRAM_SDNE1 SDRAM_SDCKE1
SDRAM_D[0..15]
SDRAM_NBL1
SDRAM_BA0 SDRAM_BA1
SDRAM_NWE SDRAM_CLK
SDRAM__SDNRAS
SDRAM
SDRAM_NBL0 SDRAM_NBL1
SDRAM_A0
SDRAM_A1
SDRAM_A2
SDRAM_A3
SDRAM_A4
SDRAM_A5
SDRAM_A6
SDRAM_A7
SDRAM_A8
SDRAM_A9
SDRAM_A10
SDRAM_A11
SDRAM_D1
SDRAM_D2
SDRAM_D3
SDRAM_D4
SDRAM_D5
SDRAM_D6
SDRAM_D7
SDRAM_D8
SDRAM_D9
SDRAM_D10
SDRAM_D11
SDRAM_D12
SDRAM_D13
SDRAM_D14
SDRAM_D15
SDRAM_BA0 SDRAM_BA1
SDRAM_SDCKE1
SDRAM_SDNE1
SDRAM_SDNRAS
SDRAM_SDNCAS
SDRAM_SDNWE SDRAM_SDCLK
100nFC76
100nFC94
100nFC73
100nFC102
100nFC72
100nFC84
100nFC49
100nFC64
100nFC101
100nFC74
100nFC83
100nFC47
100nFC81
100nFC48
10KR158
10KR124
10KR128
10KR159
10KR162
10KR163
10KR135
10KR161
10KR155
10KR132
10KR157
10KR156
10KR160
10KR164
10KR125
10KR121
10KR116
10KR117
SDRAM_SDCKE1
PF0
PF1
PF2
PF3
PF4
PF5
PH5
PF11
PF12
PF13
PF14
PF15
PG0
PG1
PE7
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PE15
PH6 PH7
PD8
PD9
PD10
PD14
PD15
PG4
PG5
PG8
PD0
PD1
PG15
PE0
PE1
i
SDRAM
Matched Net Lengths[Tolerance = 100mil]
i
SDRAM
i
SDRAM
i
SDRAM
i
SDRAM
i
SDRAM
i
SDRAM
i
SDRAM
A11
H9
A10
G7
A9
J3
A8
H2
A7
H1
A6
G3
A5
G2
A4
G1
A3
F3
A2
F7
A1
G9
A0
G8
NC
E3
DQ0
R8
DQ8
L2
DQ1
N7
DQ9
M3
DQ2
R9
DQ10
M2
DQ3
N8
DQ11
P1
VDDQ
B2
DQ4
P9
DQ12
N2
DQ5
M8
DQ13
R1
DQ6
M7
DQ14
N3
DQ7
L8
DQ15
R2
VSS
A3
VDD
A7
DQ16
E8
DQ24
A2
DQ17
D7
DQ25
C3
DQ18
D8
DQ26
A1
DQ19
B9
DQ27
C2
DQ20
C8
DQ28
B1
DQ21
A9
DQ29
D2
DQ22
C7
DQ30
D3
DQ23
A8
DQ31
E2
VSSQ
B3
VDDQB7VSSQ
B8
VSSQ
C1
VDDQ
C9
VSSQ
D1
VDDQ
D9
VDDQ
E1
NC
E7
VSSQ
E9
VSS
F1
VDD
F9
NC
H3
NC
H7
BA0
J7
BA1
H8
NU
K2
NC
K3
VDDQ
L1
VSS
L3
VDD
L7
VSSQ
L9
VSSQ
M1
VDDQ
M9
VSSQ
N1
VDDQ
N9
VDDQP2VSSQ
P3
VDDQP7VSSQ
P8
VSS
R3
VDD
R7
DQM0
K9
DQM1
K1
DQM2
F8
CLK
J1
CKE
J2
CS#
J8
DQM3
F2
RAS#
J9
CAS#
K7
WE#
K8
MT48LC4M32B2B5-6A IT_L TR
U7
UM2488 - Rev 4
page 39/55
Figure 22. SDRAM
Electrical schematics
UM2488
Page 40
10 19
eMMC
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
3V3
SDIO1_D0
SDIO1_D[0..7]
eMMC
SDIO1_D[0..7]
SDIO1_CMD
SDIO1_CK
eMMC
SDIO1_D1 SDIO1_D2 SDIO1_D3 SDIO1_D4 SDIO1_D5 SDIO1_D6 SDIO1_D7
SDIO1_CK SDIO1_CMD
eMMC_RSTn
SDIO1_CK
SDIO1_CMD
100nF
C158
100nF
C157
C133 N/A
DNF
2.2uF
C159
2.2uF
C120
C131 N/A
DNF
0RR206
TP4
eMMC_RSTn
PC6
PD2
PC7
PC8 PC9 PC10 PC11
PC12
PB8 PB9
3V3
3V3
3V3
47K
R202
3V3
47K R147
47K
R1
48
4
7K
R1
52
4
7K
R1
49
47
K
R154
47K R150
47K
R
153
4
7K R151
10K
R205
47K
R203
22RR173 22RR174 22RR176 22RR172 22RR178 22RR179 22RR177 22RR175
22RR200
22RR201
When change to THGBMDG5D1LBAIL,mount C131/C133
DAT0
A3
DAT1
A4
DAT2
A5
DAT3
B2
DAT4
B3
DAT5
B4
DAT6
B5
DAT7
B6
RSTn
K5
DS
H5
CLK
M6
VDDIM
C2
VCCQ
C6
VCCQ
M4
VSSQ
P6
VSS
E7
VSS
A6
VSS
G5
VSS
H10
VSSQ
P4
VSSQ
N5
VSSQ
N2
VSSQ
C4
VCCQ
N4
VCCQ
P3
VCCQ
P5
VCC
E6
VCC
F5
VCC
J10
VCC
K9
VSS
K8
VSS
J5
CMD
M5
MTFC4GACAJCN-1M WT
U11
i
EMMC
Matched Net Lengths[Tolerance = 100mil]
i
EMMC
i
EMMC
UM2488 - Rev 4
Figure 23. eMMC
Electrical schematics
page 40/55
UM2488
Page 41
11 19
QSPI
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
QSPI
QSPI_IO1
QSPI_IO0
QSPI_CLK
QSPI_CS1
QSPI_IO2 QSPI_IO3
QSPI_IO5
QSPI_IO4
QSPI_IO6 QSPI_IO7
QSPI_CS2
QSPI
QSPI_BK1_IO0 QSPI_BK1_IO1 QSPI_BK1_IO2 QSPI_BK1_IO3
QSPI_BK1_NCS
QSPI_CLK
QSPI_BK2_IO0 QSPI_BK2_IO1 QSPI_BK2_IO2 QSPI_BK2_IO3
3V3
PF9
PF6
PG6
3V3
3V3
PD11
PF7
QSPI_CLK QSPI_CLK
QSPI_CLK
PG9
PG14
PH2
PH3
Twin Quad SPI Flash solutions:
One Twin Quad SPI Fllash U2:MT25TL01GHBB8ESF-0SIT U1:NA
Two Quad SPI Fllash U1:MT25QL512ABB8ESF-0SIT U2:MT25QL512ABB8ESF-0SIT R14/R3/R2/R9,/SB2,/C15 ON R53/R62/R54/R56/R60/SB8/SB48 OFF
R53/R62/R54/R56/R60/SB8/SB48 ON R14/R3/R2/R9,/SB2,/C15 OFF
QSPI_BK1_IO0
QSPI_BK1_IO1 QSPI_BK1_IO2
QSPI_BK1_IO3
QSPI_BK1_NCS
QSPI_BK2_IO0
QSPI_BK2_IO1 QSPI_BK2_IO2
QSPI_BK2_IO3
QSPI_BK2_IO0
QSPI_BK2_IO1 QSPI_BK2_IO2
QSPI_BK2_IO3
QSPI_BK1_NCS
SB7
10K
R36
10K
R53
DNF
100nFC38
100nF
C15
SB2
33RR69 33RR14
33RR65 33RR9
N/AR62
DNF
N/AR60
DNF
N/AR56
DNF
N/AR54
DNF
33RR31 33RR30 33RR3 33RR2
PF10
CS#
7
DQ1
8
NC
6
NC
5
NC
12
NC
11
Vss
10
W#/Vpp/DQ2
9
HOLD#/DQ3
1
VCC
2
NC
3
CLK
16
DQ0
15
NC
4
NC
13
NC
14
MT25QL512ABB8ESF-0SIT
U1
i
QSPI
Matched Net Lengths[Tolerance = 100mil]
i
QSPI
i
QSPI
i
QSPI
i
QSPI
i
QSPI
i
QSPI
i
QSPI
i
QSPI
i
QSPI
SB48
i
QSPI
QSPI_BK2_NCS
QSPI_BK2_NCS
SB8
PF10
CS#
7
DQ1
8
NC
6
NC
5
NC
12
NC
11
Vss
10
W#/Vpp/DQ2
9
HOLD#/DQ3
1
VCC
2
NC
3
CLK
16
DQ0
15
NC
4
NC
13
NC
14
MT25QL512ABB8ESF-0SIT
U2
UM2488 - Rev 4
Figure 24. QSPI
page 41/55
Electrical schematics
UM2488
Page 42
12 19
LCD4.3
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
Backlight driver & PFC of LCD panel
LCD_RST
LCD_INT
LCD_SDA
LCD_SCL
LCD_HSYNC LCD_VSYNC
LCD_CLK
LCD_DE
3V3
LCD_BL_A LCD_BL_K
BLGND
BLVDD
LCD_BL
BLGNDBLGNDBLGND
VL VH
LCD_DISP
LCD_B0
LCD_G0
LCD_R0 LCD_R1 LCD_R2 LCD_R3 LCD_R4 LCD_R5 LCD_R6 LCD_R7
LCD_G1 LCD_G2 LCD_G3 LCD_G4 LCD_G5 LCD_G6 LCD_G7
LCD_B1 LCD_B2 LCD_B3 LCD_B4 LCD_B5 LCD_B6 LCD_B7
BLVDD
3V3 BLVDD
Default I2CAddress : 01110000
LCD_R[0..7]
LCD
LCD_R[0..7] LCD_G[0..7] LCD_B[0..7] LCD_HSYNC LCD_VSYNC LCD_DE LCD_DISP LCD_CLK LCD_INT
LCD_BL
LCD_RST
LCD
LCD_I2C
LCD_G[0..7] LCD_B[0..7] LCD_HSYNC LCD_VSYNC
LCD_CLK
LCD_DE LCD_DISP
LCD_INT
LCD_SDA
LCD_SCL
LCD_BL
4.7uF
C123
4.7uF
C105
10nF
C103
10nF
C129
100nF
C137
0RR190
4K7R192
4.7uF
C98
100nF
C104
FCM1608KF-601T03
L8
FCM1608KF-601T03
L6
4.7uH 1A 180R
L7
STPS1L40M
D8
Vi
1
Rset
2
GND3FB
4
NC
5
Vo
6
EN
7
SW
8
PGND
9
STLD40DPUR
U13
100K
R187
4K7
R142
SDA
SCL
I2C
PD13
PD12
PI15
PI9
PI12
PI14
PJ0 PJ1 PH9 PJ3 PJ4 PJ5 PJ6
PJ7 PJ8 PJ9 PJ10 PJ11
PK0
PK2
PG2
PI0 PI1
PD7
PJ12 PJ13 PJ14 PJ15 PK3 PK4 PK5 PK6
PK7
LCD_RST
10R
R181
SB31
SB30
5V
i
LCD
Matched Net Lengths[Tolerance = 100mil]
i
LCD
i
LCD
i
LCD
i
LCD
i
LCD
DE
34
CLK
30
HSYNC
32
VSYNC
33
DISP
31
GND
35
GND
3
B0
21
VDD
4
VBL+
2
VBL-
1
INT
38
SCL
39
SDA
40
RESET
37
B1
22
B2
23
B3
24
B4
25
B5
26
B6
27
B7
28
R0
5
R1
6
R2
7
R3
8
R4
9
R5
10
R6
11
R7
12
G0
13
G1
14
G2
15
G3
16
G4
17
G5
18
G6
19
G7
20
GND
29
GND
36
RK043FN48H-CT672B
U33
UM2488 - Rev 4
Figure 25. 4.3” LCD
page 42/55
Electrical schematics
UM2488
Page 43
13 19
Audio
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
Default I2CAddress:0011010
3V3
1V8
3V3
PG10
PD13 PD12
MICBIAS1
PE4
3V3
1V8
3V3
1V8
3V3
PI4
MIC_D
A
TA
M
I
C_C
LK
Right
Left
Jackin blue
SPK Left
SPK Right
Jack out Green
3V3
Audio
SAI_SDB
SAI_FSA
Audio_Int
SAI_SDA
SAI_SCKA
SAI_MCKA
SAI
SAI2_MCLKA
SDA SCL
I2C
Audio_I2C
PDM
SAI2_SCKA SAI2_FSA SAI2_SDA SAI2_SDB Audio_Int
SAI4_CK2
SAI4_D2
SB41 SB42
SB37
SB40
SB38
SB32
SB39
2.2uFC109
2.2uFC111
2.2uFC110
1
00
n
F
C128
1
0
0n
F
C152
100nF
C127
100nF
C136
1uF
C134
1uF
C132
1uFC151
1uFC147
1uFC148
4
.7uF
C125
4.7uF
C138
4.7uF
C142
4.7uF
C149
4.7uF
C150
1
0
0
n
F
C183
10KR242
0RR191 0RR189
R193 N/A
DNF
4K7R195
1
0
0
nF
C114
10
0
nF
C113
20R
R183
20R
R182
I/O1
1
GND
2
I/O23I/O3
4
GND
5
I/O4
6
ESDA6V1BC6
U19
GND
5
LR
2
CLK
3
VDD
1
DOUT
4
MP34DT01TR-M
U34
SAI2_MCLKA
DATA
CLK
PDM
PE5
PI5
PI6
PI7
3 4
6
PJ3028B-3_GR
CN9
ADCDAT1
F2
ADCLRCLK1/GPIO1
G3
AGND
D6
CPVDD
G9
CPVOUTN
H7
CPVOUTP
G7
CS/ADDR
G2
DACDAT1
E4
CPGND
H9
DCVDD
F1
DBVDD
D2
DGND
E2
CPCB
H8
AVDD1
D9
BCLK1
G1
CIFMODE
A4
CPCA
G8
DMICCLK
C6
AGND
E7
AGND
E8
AVDD2
D8
GPIO2/MCLK2
E1
GPIO3/BCLK2
H2
GPIO4/LRCLK2
F4
GPIO5/DACDAT2
H3
GPIO6/ADCLRCLK2
G4
GPIO7/ADCDAT2
E5
GPIO8/DACDAT3
H4
GPIO9/ADCDAT3
F5
GPIO10/LRCLK3
H5
GPIO11/BCLK3
F6
HP2GND
F7
HPOUT1FB
G5
HPOUT1L
H6
HPOUT1R
G6
HPOUT2N
F9
HPOUT2P
F8
IN1LN
D7
IN1LP
C8
IN1RN
B7
IN1RP
C7
IN2LN/DMICDAT1
B9
IN2LP/VRXN
B8
IN2RN/DMICDAT2
A9
IN2RP/VRXP
A8
LDO1ENA
D4
LDO1VDD
E9
LDO2ENA
D5
LDO2VDD
D1
LINEOUT1N
C5
LINEOUT1P
B5
LINEOUT2N
C4
LINEOUT2P
B4
LINEOUTFB
A6
LRCLK1
E3
MCLK1
D3
MICBIAS1
A7
MICBIAS2
B6
REFGND
A5
SCLK
H1
SDA
F3
SPKGND1
A1
SPKGND2
C1
SPKMODE
A3
SPKOUTLN
B1
SPKOUTLP
A2
SPKOUTRN
C3
SPKOUTRP
B3
SPKVDD1
B2
SPKVDD2
C2
VMIDC
C9
VREFC
E6
WM8994ECS/R
U15
3 4
6
PJ3028B-3_BE
CN8
4
.
7
uF
C144
CN17
CN18
UM2488 - Rev 4
Figure 26. Audio
page 43/55
Electrical schematics
UM2488
Page 44
14 19
STMod+
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
PA0
STMOD#11-INT STMOD#12-RST
STMOD#1-NSS
STMOD#3-MISOp
STMOD#2-TX
PI11
PH10PD5
PB15
PD6
PI2
PD3
STMOD#2-MOSIp
STMOD#3-RX STMOD#4-SCK
STMOD#8-MOSIs
STMOD#13-ADC STMOD#14-PWM
STMOD#17 STMOD#18 STMOD#19 STMOD#20
PA4 PA3
PH1
PH12
PH4 PH8
5V
PD12 PI3 PB14 PD13
STMod+
ATOMFH200210C-12000
STMOD#1-CTS
STMOD#4-RTS
PA15
PD4
STMOD_I2C
STMOD_SDA STMOD_SCL
STMOD_SCL
STMOD_SDA
STMOD#9-MISOs
SB21 SB19 SB13
SB11
SB10
SB16
SB12
SB9
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
ST
M
od
+
Socket 10X2 STMod+
P1
SDA
SCL
I2C
PD13 PD12
UM2488 - Rev 4
Figure 27. STMod+
page 44/55
Electrical schematics
UM2488
Page 45
15 19
TAG
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
Only footprintwith Cable: TC2050-IDC-NL
TDI
RESET#
TRST
TMS/SWDIO
TCK/SWCLK
TDO/SWO
PA13
PA14
PB3
3V3
1 10 2 9 3 8 4 7 5 6
TC2050-IDC-NL
CN16
DNF
22RR237
22RR236
22RR241 22RR240 22RR239 22RR238
Place this connector closeto STDC, they will share the same ESD components
PA15
UM2488 - Rev 4
Figure 28. TAG
page 45/55
Electrical schematics
UM2488
Page 46
16 19
Arduino Connector
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
Arduinouno connector
3V35V
A0 A1
A2 A3 A4 A5
RX/D0
TX/D1
D2
D4
PWM/D3
PWM/D5
PWM/D6
D7
D8
PWM/D9
PWM/CS/D10
SDA/D14
SCL/D15
PD12 PD13
NRST
VIN
NRST
SCK/D13
MISO/D12
PWM/MOSI/D11
AVDD
GND
VREF+
ARD_A0
ARD_A1
ARD_A2
ARD_A3
ARD_A4
ARD_A5
ARD_D5 ARD_D4 ARD_D3 ARD_D2 ARD_D1 ARD_D0
ARD_D13 ARD_D12 ARD_D11 ARD_D10 ARD_D9 ARD_D8
ARD_D6
ARD_D7
PC0 PF8 PA0_C PA1_C
PC2_C
PC3_C
PB6
PG3
PK1
PA8
PE6
PI8
PE3
PB4 PH15
PB15
PI2
PD3
ADC3_IN1
ADC3_IN0
ADC12_IN1
ADC12_IN0
ADC3_IN7
ADC123_IN10
I2C4_SDA
PD13
PD12
I2C4_SCL
USART1_RX
USART1_TX
TIM1_CH1
TIM13_CH1
TIM8_CH3N
TIM3_CH1,SPI2_NSS
TIM12_CH2,SPI2_MOSI
SPI2_MISO
SPI2_SCKIOREF NRST 3V3 5V GND GND VIN
POWER
A
I
N
PD12 PD13
WARNINGvoltageapplied to VIN <11.5V
TIM15_CH2
PA6
E5V
ARD_I2C
Socket 8x1
1
2
3
4
5
6
7
8
CN6
Socket 10x1
1
2
3
4
5
6
7
8
9
10
CN2
Socket 8x1
1 2 3 4 5 6 7 8
CN3
Socket 6x1
1 2 3 4 5 6
CN7
GREEN
LD8
3V3
SB29
1M
R126
510R
R234
BSN20
1
2 3
G
S D
T5
1K
R130
C80 N/A
DNF
SB20
SB33
SB35
SB34
SB36
SDA
SCL
I2C
PB7
UM2488 - Rev 4
page 46/55
Figure 29. ARDUINO® connectors
Electrical schematics
UM2488
Page 47
17 19
ST-LINK/V3E-SWD Module
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
GNDDetect
STLK_VCP_RX STLK_VCP_TX
T_SWCLKa
T_SWDIO_IN T_SWDIOa
T_SWOa
T_NRSTa
3V3_STLK
MCO
LED_STLK
STLK_SWDIO STLK_SWCLK
T_PWR_EN
T_PWR_EXT
T_SW_DIR
USB_DEV_HS_N USB_DEV_HS_P
3V3_STLK
USB_DEV_HS_N USB_DEV_HS_P
i
USB
Matched Net Lengths[Tolerance = 0.2mm]
Impedance Constraint[Min = 85.00 Max= 95.00 ]
i
USB
T_SWCLK
T_SWDIO
T_SWO
T_NRST
MCO
T_PWR_EN
T_PWR_EXT
T_SW_DIR
T_SWCLKa
T_SWO
T_SWDIOa
T_NRST
T_VCP_RX T_VCP_TX
GNDDetect
KEY
STDC14 Receiver
JP3
100nF
C169
10K
R199
10K
R197
2.2uFC115 3KR185
4K7
R208
4K7R209
100nF
C167
T_SW_DIR
T_SWCLK
T_SWO
T_NRST
MCO
T_SWDIO
LED_STLK
3V3_STLK
330R
R227
330R
R226
T_PWR_EXT
T_PWR_EN
T_VCP_TX T_VCP_RX
T_VCP_TX T_VCP_RX
Header 4x1
1
2
3
4
CN5
DNF
3V3_STLK
Must be on a border or the PCB.
10K
R210
20pF
C119
DNF
USB_uB_105017-0001
VBUS
1
DM
2
DP
3
ID
4
GND
5
Shield
6
USB_M
i
cro
-
B rec
e
p
t
acl
e
Shield
7
Shield
8
Shield
9
EXP
10
EXP
11
CN14
5V_USB_CHGR
USB_DEV_HS_CN_N USB_DEV_HS_CN_P
i
USB
i
USB
Silkscreen= Reserved
T_VCCmustbe to connected to VDD_MCU ofthe Target
JP2
DNF
100RR194
100RR207
100RR235
100RR186
LD_BICOLOR_CMS
21
4 3
Red
Green
LD2
Capacitor Close to pin 1
100pF
C179
22R R145 22R R165
T_SWDIO T_SWCLK
22R R171 T_SWOa
T_SWO
T_SWDIO
T_SWCLK
ESDALC6V1W5
1
3
2
4
5
U10
T_NRST
ESDALC6V1W5
1
3
2
4
5
U12
T_VCP_RX
T_VCP_TX
STLK_SWDIO
STLK_SWCLK
ESDA7P60-1U1M
1 2
U27
T_NRSTa22R R180
22R R18422R R188 STLK_VCP_RXSTLK_VCP_TX
VDD4OUT
3
EN1GND
2
25MHz
X3
GND
3
NC
4
D-5D-
2
D+6D+
1
ECMF02-2AMX6
U26
1 2 3 4 5 6 7 8
109
111312
14
STDC14
CN4
T_JTDI
T_JTDI
T_JTDI
3V3
3V3
T_VCC AIN/PA0
N3
T_NRST/PA6
P3
T_PWR_EN/PB0
R5
T_PWR_EXT/PB1
R4
USB_DEV_HS_N/PB14
R14
USB_DEV_HS_P/PB15
R15
STLK_MCO/PA8
F15
STLK_LED/PA10
D15
STLK_SWDIO/PA13
A15
STLK_SWCLK/PA14
A14
OSC_IN/PH0
G1
OSC_OUT/PH1
H1
NRST
J1
BOOT0
D6
PDR_ON
C6
STLK_VCP_RX/PG9
C10
STLK_VCP_TX/PG14
A7
T_SWCLK/PH6
M11
T_SWDIO_IN/PH7
N12
T_SWDIO_OUT/PF9
L2
T_SWO/PD2
D12
V12_OTGPHY
J14
REXT_OTGPHY
J15
GNDDetect/PG5
K13
HW_TYP_0/PI4
D4
HW_TYP_1/PI5
C4
T_SW_DIR/PA7
R3
ST-LINKV3E_SWD
U16A
UM2488 - Rev 4
page 47/55
Figure 30. STLINK-V3E-SWD module
Electrical schematics
UM2488
Page 48
18 18
ST-LINK/V3E-SWD PowerModule
Title:
Size:
Reference: Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
3V3_STLK
Ceramic capacitor (LowESR)
3V3_STLK
3.3 Volts ST-LINK
3V3_STLK
5V
T_PWR_EXT
BAT60JFILM
D12
BAT60JFILM
D10
1uF
C112
LD3985M33R
51
2
GND
3
4
BYPASS
INH
Vin Vout
U14
10K
R196
1K
R216
SHUNT_BK
HW1
2K7
R198
4K7
R204
100nF
C143
100nF
C165
100nF
C160
3V3_STLK
100nF
C118
100nF
C145
100nF
C117
100nF
C116
100nF
C164
100nF
C146
5V
5 Volts Power Supply
5V_USB_STLK
BAT60JFILM
D13
BAT60JFILM
D11
T_PWR_EXT
T_PWR_EN
100nF
C141
100nF
C153
100nF
C139
100nF
C166
3V3_STLK
1uF
C163
4.7uF
C162
5V_USB_STLK
T_PWR_EN
5 Volts ST-LINK
1K
R215
10K
R217
1uF
C175
47K
R218
1uF
C126
100nF
C140
100nF
C135
100nF
C130
100nF
C106
100nF
C122
10nF
C124
100nF
C121
E5V
VBUS_FS2
5V_POE
E5V
VBUS_FS2
5V_POE
2.2uF
C107
2.2uF
C108
TRUEGREEN
LD4
RED
LD3
IN5OUT
1
GND
2
EN4FAULT
3
STMPS2151
U24
BAT60JFILM
D9
USB_uB_105017-0001
VBUS
1
DM
2
DP
3
ID
4
GND
5
Shield
6
U
SB
_
Mi
c
r
o
-B rec
ep
ta
cl
e
Shield
7
Shield
8
Shield
9
EXP
10
EXP
11
CN15
5V_USB_PWR
ESDA7P60-1U1M
12
U28
1uF
C177
5V_USB_CHGR
5V_USB_CHGR
5V_USB_PWR
5V_USB_CHGR
5V_USB_CHGR
5V_USB_PWR
1 2 3 4 5 6 7 8 9 10 11 12
Shunt Fitted1-2
JP8
VBAT
C1
V
SS
F9
V
SS
F
8
VREF-
N1
VSSA
M1
VREF+
P1
VSS
H9
VSS
H10
VCAP2
F13
VSS
J6
VDD
K4
VDD
C5
VSS
J7
VCAP1
M10
VSS
J8
VDD
G13
VSS
J9
VSS
J10
VDD
N10
VDD
G3
VDDA
R1
VDD
C8
VDD
C7
VDD
F3
VDD
J12
VDD
C9
VSS
K6
VSS
K7
V
SS
F
10
VSS
G
6
BYPASS-REG
L4
VDD
N8
VDD
N9
VDD
J13
VDD
H13
VS
S
G
7
V
SS
G8
VSS
H6
VSS
H7
VSS
H8
VSS
K8
VSS
K9
VSS
K10
VSS
F12
VSS
D5
VSS
G2
VSS
M8
V
SS
G9
VSS
G
1
0
V
SS
M9
VSS
G
12
VSS
D8
V
S
S
D7
V
SS
F
2
VSS
H
12
VSS
D9
VSS
F
6
VS
S
F
7
ST-LINKV3E_SWD
U16B
UM2488 - Rev 4
Figure 31. STLINK-V3E-SWD power module
page 48/55
Electrical schematics
UM2488
Page 49
Federal Communications Commission (FCC) and Industry Canada (IC) Compliance Statements
Appendix A Federal Communications Commission (FCC) and Industry
Canada (IC) Compliance Statements

A.1 FCC Compliance Statement

Part 15.19
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Part 15.21
Any changes or modifications to this equipment not expressly approved by STMicroelectronics may cause harmful interference and void the user's authority to operate this equipment.
Part 15.105
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
UM2488
A.2
Responsible party (in the USA)
Terry Blanchard Americas Region Legal | Group Vice President and Regional Legal Counsel, The Americas STMicroelectronics, Inc. 750 Canyon Drive | Suite 300 | Coppell, Texas 75019 USA Telephone: +1 972-466-7845
IC Compliance Statement
This device complies with FCC and Industry Canada RF radiation exposure limits set forth for general population for mobile application (uncontrolled exposure). This device must not be collocated or operating in conjunction with any other antenna or transmitter.
Compliance Statement
Notice: This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Industry Canada ICES-003 Compliance Label: CAN ICES-3 (A)/NMB-3(A).
Déclaration de conformité
Avis: Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Étiquette de conformité à la NMB-003 d'Industrie Canada: CAN ICES-3 (A)/NMB-3(A).
UM2488 - Rev 4
page 49/55
Page 50

Revision history

Date Revision Changes
8-Jan-2019 1 Initial release.
1-Apr-2019 2
6-May-2019 3
12-Sep-2019 4
UM2488
Table 16. Document revision history
Updated Figure 1 and Figure 2 on the cover page and reorganized the beginning of the document:
• Updated Features
• Updated Ordering information
• Updated Product marking
• Added Codification
• Added Development environment
Updated the description of the SMPS/LDO power supply default modes in Section 6.4 Power Supply.
Updated the descriptions of pins ARD_D0 and ARD_D1 of ARDUINO® connector CN6 in
Figure 29. ARDUINO® connectors and correspondingly in Table 6. ARDUINO® connectors (CN2, CN3, CN6, and CN7).
Updated all schematics related to STM32H745I-DISCO in Section 9 Electrical schematics.
UM2488 - Rev 4
page 50/55
Page 51
UM2488

Contents

Contents
1 Features ...........................................................................2
2 Ordering information ..............................................................3
2.1 Product marking ...............................................................3
2.2 Codification ...................................................................3
3 Development environment .........................................................4
3.1 System requirements ...........................................................4
3.2 Development toolchains .........................................................4
3.3 Demonstration software .........................................................4
4 Conventions.......................................................................5
5 Delivery recommendations ........................................................6
6 Hardware layout and configuration.................................................7
6.1 STM32H753I-EVAL Evaluation board layout ........................................7
6.2 STM32H753I-EVAL Evaluation board mechanical drawing ...........................10
6.3 Embedded ST_LINK/V2-1 ......................................................10
6.4 Power supply .................................................................11
6.5 Clock sources ................................................................13
6.6 Reset sources ................................................................13
6.7 Audio........................................................................14
6.8 USB OTG_FS ................................................................14
6.9 eMMC .......................................................................14
6.10 Ethernet .....................................................................14
6.11 Power over Ethernet ...........................................................14
6.12 SDRAM .....................................................................14
6.13 Quad-SPI NOR Flash memory ..................................................14
6.14 Virtual COM port ..............................................................15
6.15 RGB LCD display .............................................................15
6.16 Buttons and LEDs .............................................................15
7 Connectors .......................................................................16
7.1 ARDUINO® Uno V3 connectors .................................................16
UM2488 - Rev 4
page 51/55
Page 52
UM2488
Contents
7.2 CN13 USB OTG_FS Micro-AB connector .........................................16
7.3 CN1 Ethernet RJ45 connector ..................................................17
7.4 LCD RGB connector ..........................................................17
7.5 CN2 STMod+ connector........................................................19
7.6 CN14 STLINK-V3 USB Micro-B connector ........................................19
7.7 Audio stereo speaker header connectors (CN17 and CN18) .........................19
7.8 CN9 audio line output (green jack) connector ......................................19
7.9 CN8 audio line input (blue jack) connector ........................................20
7.10 CN16 TAG connector ..........................................................20
7.11 CN4 STDC14 connector........................................................20
7.12 CN15 USB power connector ....................................................21
8 STM32H745I-DISCO and STM32H750B-DK I/O assignment .........................22
9 Electrical schematics .............................................................29
Appendix A Federal Communications Commission (FCC) and Industry Canada (IC)
Compliance Statements...........................................................49
A.1 FCC Compliance Statement ....................................................49
A.2 IC Compliance Statement ......................................................49
Revision history .......................................................................50
Contents ..............................................................................51
List of tables ..........................................................................53
List of figures..........................................................................54
UM2488 - Rev 4
page 52/55
Page 53
UM2488

List of tables

List of tables
Table 1. List of available products...............................................................3
Table 2. Codification explanation ...............................................................3
Table 3. ON/OFF convention ..................................................................5
Table 4. Power-supply related jumper and solder bridge settings ........................................ 13
Table 5. Assignment of control ports to LED ......................................................15
Table 6. ARDUINO® connectors (CN2, CN3, CN6, and CN7)........................................... 16
Table 7. CN13 USB OTGFS micro-AB connector ................................................... 17
Table 8. CN1 Ethernet RJ45 connector ......................................................... 17
Table 9. LCD RGB connector................................................................. 18
Table 10. CN2 STMod+ connector ..............................................................19
Table 11. CN14 USB Type-B connector .......................................................... 19
Table 12. CN16 TAG connector ................................................................ 20
Table 13. STDC14 connector ................................................................. 20
Table 14. CN15 USB Micro-B connector ..........................................................21
Table 15. STM32H745I-DISCO and STM32H750B-DK I/O assignment..................................... 22
Table 16. Document revision history ............................................................. 50
UM2488 - Rev 4
page 53/55
Page 54
UM2488

List of figures

List of figures
Figure 1. STM32H745I-DISCO and STM32H750B-DK boards (top view) ...................................1
Figure 2. STM32H745I-DISCO and STM32H750B-DK boards (bottom view) ................................1
Figure 3. Hardware block diagram .............................................................7
Figure 4. STM32H745I-DISCO and STM32H750B-DK Discovery board top layout ............................8
Figure 5. STM32H745I-DISCO and STM32H750B-DK Discovery board bottom layout .........................9
Figure 6. STM32H745I-DISCO and STM32H750B-DK Discovery board mechanical drawing (bottom view) ..........10
Figure 7. CN13 USB OTG Micro-AB connector (front view) ........................................... 17
Figure 8. CN1 Ethernet RJ45 connector (front view) ................................................17
Figure 9. LCD RGB connector (footprint) ........................................................18
Figure 10. CN14 USB Micro-B connector (front view) ................................................19
Figure 11. CN16 TAG debugging connector (top view) ...............................................20
Figure 12. CN15 USB Micro-B connector (front view) ................................................21
Figure 13. STM32H745I-DISCO and STM32H750B-DK schematic (top view) ............................... 30
Figure 14. STM32H745XI microcontroller I/Os .....................................................31
Figure 15. STM32H750XB microcontroller I/Os .................................................... 32
Figure 16. STM32H745XI microcontroller power ................................................... 33
Figure 17. STM32H750XB microcontroller power ...................................................34
Figure 18. Ethernet .......................................................................35
Figure 19. Power over Ethernet (PoE)........................................................... 36
Figure 20. USB OTG_FS ................................................................... 37
Figure 21. FDCAN ........................................................................ 38
Figure 22. SDRAM ........................................................................ 39
Figure 23. eMMC ......................................................................... 40
Figure 24. QSPI.......................................................................... 41
Figure 25. 4.3” LCD .......................................................................42
Figure 26. Audio ......................................................................... 43
Figure 27. STMod+ ....................................................................... 44
Figure 28. TAG .......................................................................... 45
Figure 29. ARDUINO® connectors ............................................................. 46
Figure 30. STLINK-V3E-SWD module........................................................... 47
Figure 31. STLINK-V3E-SWD power module ...................................................... 48
UM2488 - Rev 4
page 54/55
Page 55
UM2488
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2019 STMicroelectronics – All rights reserved
UM2488 - Rev 4
page 55/55
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