ST STM32L4P5AG User manual
Introduction
The STM32L4P5G-DK Discovery kit is a complete demonstration and development platform for the STMicroelectronics Arm®
Cortex®-M4 core-based STM32L4P5AGI6PU microcontroller with four I²C buses, three SPI and six USART ports, CAN port, two
SAI ports, 12-bit ADC, 12-bit DAC, internal 320-Kbyte SRAM and 1-Mbyte Flash memory, two Octo-SPI memory interfaces,
touch-sensing capability, USB OTG FS port, LCD-TFT controller, flexible memory controller (FMC), 8- to 14-bit DCMI interface
and JTAG debugging support.
The STM32L4P5G-DK Discovery kit, shown in Figure 1 and Figure 2, is used as a reference design for user application
development before porting to the final product.
The full range of hardware features available on the board helps users improve application development evaluating all the
peripherals (USB OTG FS, Octo-SPI Flash and PSRAM memory device, eMMC, and others). ARDUINO® Uno V3 and STMod+
connectors provide easy connection to extension shields or daughterboards for specific applications.
An STLINK-V3E is integrated into the board, as the embedded in-circuit debugger and programmer for the STM32 MCU and the
USB Virtual COM port bridge.
Figure 1. STM32L4P5G-DK top view Figure 2. STM32L4P5G-DK bottom view
Pictures are not contractual.
Discovery kit with STM32L4P5AG MCU
UM2651
User manual
UM2651 - Rev 2 - September 2020
For further information contact your local STMicroelectronics sales office. www.st.com
1Features
• STM32L4P5AGI6PU Arm® Cortex® core-based microcontroller featuring 1 Mbyte of Flash memory and 320
Kbytes of RAM in UFBGA169 package
• 240x240 64-color LCD with RGB interface (Connector only)
• 4-Gbyte onboard eMMC
• On-board current measurement
• SAI audio codec (Footprint only)
• ST-MEMS digital microphone (Footprint only)
• 512-Mbit Octo-SPI NOR Flash memory with DDR mode
• 64-Mbit Octo-SPI PSRAM memory with DDR mode
• 2 user LEDs
• Reset buttons
• 4-direction joystick with a selection button
• Board connectors:
– 8-bit camera (Footprint only)
– Stereo headset jack (Footprint only)
– USB with Micro-AB
– User interface through USB Virtual COM port
– Arm® Cortex® 10-pin 1.27 mm-pitch debug connector over STDC14 footprint
– ARDUINO® Uno V3 expansion connector
– STMod+ expansion connector
• Flexible power-supply options:
– ST-LINK USB VBUS, USB OTG connector, or external sources
• On-board STLINK-V3E debugger/programmer with USB re-enumeration capability: mass storage, Virtual
COM port, and debug port
• Microcontroller supply voltage: fixed 3.3 V and extern SMPS to generate Vcore logic supply
• Comprehensive free software libraries and examples available with the STM32CubeL4 MCU Package
• Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded
Workbench®, MDK-ARM, and STM32CubeIDE
Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
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Features
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2Ordering information
To order the STM32L4P5G-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 reference Target STM32
STM32L4P5G-DK MB1535 STM32L4P5AGI6PU
2.1 Codification
The meaning of the codification is explained in Table 2. The order code is mentioned on a sticker placed on the
top or bottom side of the board.
Table 2. Codification explanation
STM32TTXXY-DK Description Example: STM32L4P5G-DK
STM32TT MCU series in STM32 32-bit Arm Cortex MCUs STM32L4+ Series
XX MCU product line in the series STM32L4P5
YSTM32 Flash memory size:
• G for 1 Mbyte 1 Mbyte
DK Discovery kit Discovery kit
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Ordering information
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3Development environment
3.1 System requirements
• Windows® OS (7, 8, and 10), Linux® 64-bit, or macOS®
• USB Type-A or USB Type-C® to Micro-B cable
Note: macOS® is a trademark of Apple Inc. registered in the U.S. and other countries.
All other trademarks are the property of their respective owners.
3.2 Development toolchains
• IAR Systems - IAR Embedded Workbench®(1)
• Keil® - MDK-ARM(1)
• STMicroelectronics - STM32CubeIDE
1. On Windows® only.
3.3 Demonstration software
The demonstration software, included in the STM32Cube MCU Package corresponding to the on-board
microcontroller, is preloaded in the STM32 Flash memory for easy demonstration of the device peripherals in
standalone mode. The latest versions of the demonstration source code and associated documentation can be
downloaded from www.st.com.
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Development environment
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4Conventions
Table 3 provides the conventions used for the ON and OFF settings in the present document.
Table 3. ON/OFF convention
Convention Definition
Jumper JPx ON Jumper fitted
Jumper JPx OFF Jumper not fitted
Jumper JPx [1-2] Jumper fitted between Pin 1 and Pin 2
Solder bridge SBx ON SBx connections closed by 0 Ω resistor
Solder bridge SBx OFF SBx connections left open
Resistor Rx ON Resistor soldered
Resistor Rx OFF Resistor not soldered
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5Delivery recommendations
Before first use, check the board for any damage that might have occurred during shipment, that all socketed
components are firmly fixed in their sockets and that none are loose in the plastic bag.
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Delivery recommendations
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6Hardware layout and configuration
The STM32L4P5G-DK Discovery kit is designed around the STM32L4P5AGI6PU target microcontroller. Figure 3
illustrates STM32L4P5AGI6PU connections with 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. STM32L4P5G-DK hardware block diagram
STM32L4P5AGI6PU
3.3 V
Audio codex
RTC
DAP
32 KHz Crystal
VBAT
STLINK-V3E
I2C1
SAI1
LEDs
eMMC
Joystick,
buttons
GPIO
SDMMC1
USB connector OTG FS
OctoSPI2
Octo-SPI Flash
USART1
DFSDM
3.3 V power
supply
1.8 V power
supply
RGB TFT LCD
STMod+
connector
OctoSPI1
Octo-SPI
PSRAM
MEMs
DCMI
Camera
connector
PIR
ARDUINO®
connector
Touch panel
MFX
SMPS power
supply
Note: The grey features are not soldered, only footprints are present on the board.
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Hardware layout and configuration
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Figure 4. STM32L4P5G-DK PCB layout (Top view)
CN2
SWCLK and SWDIO
CN1
STMod+ connector
LD3
STLINK-V3E
overcurrent alarm
CN5
Camera connector
U8
STM32L4P5AGI6PU
LD1, LD2
User LEDs
CN4
ST-LINK SWD
LD4
STLINK-V3E COM
LD5
5V PWR
CN6
STDC14 connector
LD6
USB-OTG overcurrent
LD7
USB-OTG
CN7
USB-OTG connector
JP4
5V source selection
CN9
LCD connector
CN8
External SMPS selection
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Hardware layout and configuration
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Figure 5. STM32L4P5G-DK PCB layout (Bottom view)
SW1
STLINK-V3E
switcher
CN13, CN15
ARDUINO® connector
CN17
MFX SWD
CN11
STLINK-V3E
USB
LD8
ARDUINO® LED
CN16
Audio OUT
CN12, CN14
ARDUINO® connector
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Hardware layout and configuration
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6.1 Embedded STLINK-V3E
6.1.1 Description
The STLINK-V3E facility for debugging and programming the STM32L4P5AGI6PU is integrated into the
STM32L4P5G-DK board. It supports the following features:
• Self-powered through a USB connector (Micro-B)
• USB 2.0 high-speed compatible interface
• Direct firmware update support (DFU)
• SWD and serial wire viewer (SWV) communication support
• Drag-and-drop Flash programming
• Two colored LEDs: communication and power
The CN11 USB connector can be used to power the STM32L4P5G-DK regardless of the STLINK-V3E facility
used for debugging or programming STM32L4P5AGI6PU. This holds also when the STLINK-V3E stand-alone tool
is connected to the CN6 connector and used for debugging or programming STM32L4P5AGI6PU.
Section 6.2 Power supply provides more detail about powering STM32L4P5G-DK. Refer to www.st.com for
details about STLINK-V3E.
6.1.2 Drivers and firmware upgrade
The STLINK-V3E requires drivers to be installed on Windows®. It embeds a firmware that needs to be updated in
order to benefit from new functionalities or corrections. Refer for details to the technical note Overview of ST-LINK
derivatives TN1235.
6.1.3 Virtual COM port
The serial interface USART2 (PA2 and PA3 ports) is directly available as a Virtual COM port of the PC, connected
to the CN11 STLINK-V3E USB connector. The Virtual COM port settings are 115200 bps, 8-bit data, no parity, 1
stop bit, no flow control.
6.2 Power supply
The STM32L4P5G-DK Discovery kit is designed to be powered from a 5 V DC power source. One of the following
four 5 V DC power inputs can be used, upon appropriate board configuration:
• Micro-B USB receptacle CN11 of STLINK-V3E with enumeration. Up to 500 mA can be supplied to the board
(JP4 jumper setting on STLK on the silkscreen). This offers the enumeration feature described in
Section 6.2.1 .
• Micro-B USB receptacle CN11 of STLINK-V3E without enumeration. Up to 1000 mA can be supplied to the
board directly without enumeration (JP4 jumper setting on CHGR on the silkscreen).
• Micro-AB USB receptacle CN7 of the USB OTG FS interface. Marked USB_OTG on the board (JP4 jumper
setting on U5V on the silkscreen). Up to 500 mA can be supplied to the board in this way.
•7-12V DC power from CN13 pin8: Named VIN on silkscreen, the extension connectors for ARDUINO® Uno
shields (JP4 setting on external power source on silkscreen (E5V)).
The LD5 green LED turns on when the voltage on the power line marked as 5 V is present. All supply lines
required for the operation of the components on the STM32L4P5G-DK are derived from that 5 V line.
Table 4 describes the settings of all jumpers related to powering the STM32L4P5G-DK and extension board.
VDD_MCU is STM32L4P5AGI6PU digital supply voltage line. It can be connected to a fixed 3.3 V voltage supply.
6.2.1 Supplying the board through STLINK-V3E USB port
In order to power the STM32L4P5G-DK this way, the PC USB host gets connected to the Micro-B USB receptacle
of the STM32L4P5G-DK board via a USB cable. The connection event starts with the USB enumeration
procedure. In its initial phase, the host USB port current supply capability is limited to 100 mA. It is enough
because only the STLINK-V3E part of the STM32L4P5G-DK draws power at that time: The U2 STMPS2151
power switch is set to the OFF position, which isolates the rest of the STM32L4P5G-DK from the power source. In
the next phase of the enumeration procedure, the host PC informs the STLINK-V3E facility of its capability to
supply current up to 300 mA. If the answer is positive, the STLINK-V3E sets the U2 STMPS2151 switch to ON
position to supply power to the rest of the STM32L4P5G-DK board. If the PC USB port is not capable of supplying
current up to 300 mA, the CN13 pin8 (VIN) can be used to supply the board instead.
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Embedded STLINK-V3E
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If a short-circuit occurs 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 LD3 LED lights up.
The STM32L4P5G-DK board can also be supplied from a USB power source not supporting enumeration, such
as a USB charger. In this particular case, the JP4 jumper must be ON as shown in Table 4. Power-supply related
jumper and solder bridge settings. STLINK-V3E bypasses STMPS2151 power, regardless of enumeration
procedure results, and passes the power unconditionally to the board.
The LD5 green LED turns on whenever the whole board is powered.
6.2.2 Using STLINK-V3E along with powering through external power
It can happen that the board requires more than 300 mA of supply current. It cannot be supplied by host PC
connected to the STLINK-V3E USB port for debugging or programming the STM32L4P5AGI6PU. In such a case,
the board can be supplied through CN13 pin8 (Marked VIN on the board).
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:
1. Set the JP4 jumper in the E5V position,
2. Connect the external power source to CN13 pin8,
3. Check that the LD5 green LED is turned on,
4. Connect the host PC to the CN11 USB connector.
Caution: In case the board demands more than 300 mA and the host PC is connected via USB before the board is
powered from CN13 pin8, there is a risk that the following events to occur (Listed in reverse severity order):
1. The host PC is capable of supplying 300 mA (The enumeration succeeds) but it features no over-current
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 the is detected. This causes an operating failure of the STM32L4P5G-DK.
3. The host PC is not capable of supplying 300 mA (The enumeration fails). The STLINK-V3E does not
supply the rest of the from its USB port VBUS line.
Table 4 details the jumper and solder bridge settings used for the power-supply configuration of the
STM32L4P5G-DK.
Table 4. Power-supply related jumper and solder bridge settings
Jumper /solder
bridge Setting Configuration(1)
JP4 5 V source
selector
STLK U5V E5V D5V CHGR
Default setting.
STM32L4P5G-DK is supplied through the CN11 Micro-B USB
receptacle. It depends on the host PC USB port’s powering
capability declared in the enumeration.
STLK U5V E5V D5V CHGR
STM32L4P5G-DK is supplied through CN7 Micro-AB USB
receptacle.
STLK U5V E5V D5V CHGR
STM32L4P5G-DK is supplied through CN13 pin 8.
STLK U5V E5V D5V CHGR
STM32L4P5G-DK is supplied through CN13 pin 5.
STLK U5V E5V D5V CHGR
STM32L4P5G-DK is supplied through CN11 Micro-B USB
receptacle.
This setting is applied to power the board through CN11 using
USB charger.
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Power supply
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Jumper /solder
bridge Setting Configuration(1)
R46 VBAT
connection
R46 ON Default setting.
VBAT is connected to VDD_MCU.
R46 OFF VBAT is not connected to VDD_MCU.
JP2 VDDA /
VDDUSB
connection
13
2Default setting.
VDDA and VDDUSB terminal of STM32L4P5AGI6PU are
connected to VDD_MCU.
13
2VDDA and VDDUSB terminal of STM32L4P5AGI6PU are
connected to 3V3.
JP6 3V3
12Default setting.
Board is connected to fixed 3V3.
12
The device is connected to measure current consumption.
1. On all STLINK-V3E boards, the target application is now able to run even if the STLINK-V3E is either not connected to an
USB host, or is powered through a USB charger, or through a not-enumerating USB host.
6.2.3 SMPS power supply
VDD12 is the external power supply bypassing the internal regulator when connected to an external SMPS. Board
is populated with DC-DC regulator mounted on U22 ST1PS02D1QTR, which allows to dynamically supply the
VDD12 pins in Run, Sleep and Stop 0 modes at voltage range from 1.0 to 1.35 V by configured
STM32L4P5AGI6PU GPIOs (PH2, PH4, and PH13).
6.3 Clock references
Two clock references are available on STM32L4P5G-DK for the STM32L4P5AGI6PU target microcontroller.
• 32.768 kHz crystal X2, for embedded RTC
• 24 MHz crystal X3, for main clock generator (Footprint only)
The main clock generation is possible via an internal RC oscillator (Default) or from STLK_MCO, disconnected by
removing resistors R49, R51, and R52 when the internal RC clock is used.
6.4 Reset source
The general reset of the STM32L4P5G-DK Discovery kit is active LOW. Sources of reset are:
• B2 RESET button
• CN6 STDC14 connector (Reset from debug tools)
• ARDUINO® Uno shield board through CN13 connector
• Embedded STLINK-V3E
6.5 Boot option
After reset, the STM32L4P5AGI6PU MCU can boot from the following embedded memory locations:
• Main (User, non-protected) Flash memory
• System (Protected) Flash memory
• RAM, for debugging
The boot option is configured by setting PH3 (BOOT0) and the boot base address programmed in the nBOOT1,
nBOOT0, and nSWBOOT0 of FLASH_OPTR option bytes.
Table 5 describes the HW configuration for the BOOT mode.
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Clock references
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Table 5. Boot selection switch
Resistor Setting(1) Description
R37 and R38
R37 OFF
R38 ON
BOOT0 line is tied LOW. STM32L4P5AGI6PU boots from Main Flash
memory.
R37 ON
R38 OFF
BOOT0 line is tied HIGH. STM32L4P5AGI6PU boots from system Flash
memory (nBOOT1 bit of FLASH_OPTR register is set HIGH) or from RAM
(nBOOT1 is set LOW).
1. The default configuration is shown in bold.
6.6 Audio (Footprint only)
A Cirrus codec CS42L51-CNZ, connected to the SAI interface of STM32L4P5AGI6PU, offers the possibility to
connect a stereo headphone or headset with a mono analog microphone. The codec communicates with
STM32L4P5AGI6PU via the I2C1 bus, which is shared with MFX and JDI LCD.
The I²C-bus addresses of CS42L51-CNZ are 0x95 and 0x94.
6.7 Digital microphones (Footprint only)
Two ST-MEMS IMP34DT05TR digital microphones, U17 and U23, are available on STM32L4P5G-DK. The two
microphones are located at a distance of 21 mm from each other. They are connected to the STM32 DFSDM by
the PE9 port, generating the clock, and by PD3 port, collecting the PDM interleaved data.
6.8 USB FS port
The STM32L4P5G-DK Discovery kit supports USB OTG FS, full-speed communication, via the CN7 USB Micro-
AB receptacle and U7 USB power switch connected to VBUS.
An LD7 green LED lits up in one of the following cases:
• The U7 power switch is ON and STM32L4P5G-DK works as a USB host.
• VBUS is powered by another USB host when STM32L4P5G-DK works as a USB device.
The LD6 red LED is lit in case of overcurrent.
6.9 User LEDs
Two general-purpose color LEDs, LD1 and LD2, are available as light indicators. Each LED is in light-emitting
state with a low level of the corresponding ports of the STM32L4P5AGI6PU MCU.
6.10 Physical input devices
The STM32L4P5G-DK board provides a number of input devices for physical human control.
• A four-way joystick controller with select key (B1)
• A reset button (B2)
6.11 Octo-SPI device
U12, a 512-Mbit Octo-SPI user Flash memory MX25LM51245GXDI00 from MACRONIX, is connected to the
OCTOSPIM_P2 interface of STM32L4P5AGI6PU.
U11, a 64-Mbit Octo-SPI PSRAM memory APS6408L-3OBx-BA from APMemory, is connected to the
OCTOSPIM_P1 interface of STM32L4P5AGI6PU.
By default, U14 is the footprint of a Quad-SPI interface for the SO8 package, like APMemory APS1604M-3SQR-
SN. Note that U11 and U14 share the same GPIO port for Octo-SPI and Quad-SPI interface usage.
6.12 eMMC
The STM32L4P5G-DK Discovery kit embeds a 4-Gbyte eMMC chip. It is connected to the STM32L4P5AGI6PU
SDMMC1 port.
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Audio (Footprint only)
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6.13 MFX MCU
The MFX MCU is used as an MFX multi-function expander and an IDD measurement calculator.
6.13.1 MFX
The MFX circuit on the STM32L4P5G-DK Discovery kit acts as IO-expander. The communication interface
between MFX and STM32L4P5AGI6PU is the I2C1 bus. The signals connected to MFX are listed in Table 6.
Table 6. MFX signals
MFX pin
number
MFX pin
name MFX function STM32L4P5G-DK function MFX direction Terminal device
15 PA5 MFX_GPIO5 Camera_Flash Output Camera
16 PA6 MFX_GPIO6 Camera_STANDBY Output Camera
17 PA7 MFX_GPIO7 Camera_PLUG Input Camera
18 PB0 MFX_GPIO0 USB_PSON Output USB OTG FS
19 PB1 MFX_GPIO1 USB_OVRCR Input USB OTG FS
20 PB2 MFX_GPIO2 Audio_RST Input Audio
26 PB13 MFX_GPIO13 - - -
27 PB14 MFX_GPIO14 - - -
28 PB15 MFX_GPIO15 - - -
29 PA8 MFX_GPIO8 - - -
30 PA9 MFX_GPIO9 - - -
31 PA10 MFX_GPIO10 - - -
32 PA11 MFX_GPIO11 - - -
33 PA12 MFX_GPIO12 - - -
39 PB3 MFX_GPIO3 Camera_RST Output Camera
40 PB4 MFX_GPIO4 Camera_Shutter Output Camera
6.13.2 IDD measurement
STM32L4P5AGI6PU has a built-in circuit to measure its own current consumption (IDD) in Run and Low-power
modes, except Shutdown mode. It is strongly recommended for the MCU supply voltage (VDD_MCU line) to not
exceed 3.3 V because there are components on the STM32L4P5G-DK supplied from 3.3 V that communicate
with the MCU through I/O ports. Voltage exceeding 3.3 V on the MCU output port may inject current into 3.3 V
supplied peripheral I/Os and distort the MCU current-consumption measurement.
Table 7 shows the setting of the jumper associated with the IDD measurement on the board.
Table 7. IDD measurement related jumper setting
HW Setting(1) Configuration
JP5
JP5 [1-2] STM32L4P5AGI6PU has a built-in circuit to measure its own current
consumption.
JP5 [2-3] IDD measurement is not available, bypass mode only for STM32L4P5AGI6PU
VDD_MCU power supply.
1. The default configuration is shown in bold.
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6.14 LCD interface (Connector only)
The STM32L4P5G-DK supports 6 bits RGB interface and a touch-panel interface. The users may develop their
daughterboard, plugged into the CN9 connector, for application. The CN9 connector part number is SAMTEC
FLE-112-01-G-DV.
6.15 Camera connector (Footprint only)
A CN5 connector for 8- to 12-bit DCMI signals on the STM32L4P5G-DK Discovery kit supports a camera module
daughterboard MB1183 or MB1379. The camera shares the I2C4 bus with STMod+ connector and ARDUINO®
connector.
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LCD interface (Connector only)
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7Connectors
7.1 CN1 STMod+ connector
The standard 20-pin STMod+ connector is available on the STM32L4P5G-DK Discovery kit to increase
compatibility with external boards and modules from the Ecosystem of microcontrollers. By default, it is designed
to support an ST-dedicated fanout board to connect different modules or board extensions from different
manufacturers. The fanout board also embeds a 3.3 V regulator and I2C level shifter (Footprint only). Schematics
of the fanout board is available at the www.st.com website.
For details about STMod+ interface, refer to the technical note STMod+ interface specification TN1238.
Figure 7. CN1 STMod+ connector
Table 8. CN1 STMod+ connector pinout
Pin number Description Pin number Description
1 SPI1_NSS/USART3_CTS (PG5/PD11) 11 INT (PD10)
2 SPI1_MOSI/ USART3_TX (PG4/PD8) 12 RESET (PF11)
3 SPI1_MISO/ USART3_RX (PG3/PD9) 13 ADC (PA5)
4 SPI1_SCK/ USART3_RTS (PG2/PD12) 14 PWM (PG11)
5 GND 15 5V
6 5V 16 GND
7 I2C4_SCL (PF14) 17 DFSDM1-CKOUT (PF10)
8 SPI1_MOSIs (PE15) 18 DFSDM1- DATIN1 (PB12)
9 SPI1_MISOs (PE14) 19 GPIO3 (PD0)
10 I2C4_SDA (PF15) 20 GPIO4 (PD1)
7.2 CN4 STLINK-V3E programming connector
The CN4 connector is only used for embedded STLINK-V3E programming during board manufacturing. It is not
populated by default and not for the end-user.
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7.3 CN5 camera module connector (Footprint only)
Figure 8. CN5 camera module connector (Top view)
Table 9. CN5 camera module connector pinout
Pin number Description Pin number Description
1 1V8 2 1V8
3 GND 4 GND
5 DCMI_D10 (PI3) 6 DCMI_D11 (PH15)
7 GND 8 GND
9 DCMI_D8 (PH6) 10 DCMI_D9 (PH7)
11 GND 12 GND
13 I2C4_SCL (PF14) 14 I2C4_SDA (PF15)
15 Camera_PLUG (MFX GPIO7) 16 GND
17 Camera_RST (MFX GPIO3) 18 -
19 Camera_STANDBY (MFX GPIO6) 20 Camera_CLK
21 GND 22 GND
23 DCMI_D0 (PH9) 24 DCMI_D1 (PH10)
25 DCMI_D2 (PE0) 26 DCMI_D3 (PH12)
27 DCMI_D4(PH14) 28 DCMI_D5 (PI4)
29 DCMI_D6 (PI6) 30 DCMI_D7 (PI7)
31 DCMI_HSYNC (PH8) 32 DCMI_VSYNC (PI5)
33 DCMI_PIXCLK (PH5) 34 -
35 Camera_Shutter (MFX GPIO4) 36 Camera_Flash (MFX GPIO5)
37 GND 38 GND
39 2V8 40 2V8
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CN5 camera module connector (Footprint only)
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7.4 CN6 STDC14 connector
Figure 9. CN6 STDC14 debugging connector (Top view)
Table 10. CN6 STDC14 debugging connector pinout
Terminal Function / MCU port Terminal Function / MCU port
1 - 2 -
3 VDD 4 SWDIO/TMS (PA13)
5 GND 6 SWDCLK/TCK (PA14)
7 GND 8 SWO/TDO (PB3)
9 - 10 -
11 GND 12 RESET#
13 VCP_RX_STDC (PA3) 14 VCP_TX_STDC (PA2)
7.5 CN7 USB OTG FS Micro-AB connector
A USB OTG Full Speed communication link is available at CN7 USB Micro-AB receptacle connector. Micro-AB
receptacle enables USB Host and USB Device features.
Figure 10. CN7 USB OTG FS Micro-AB connector
Table 11. CN7 USB OTG FS Micro-AB connector pinout
Pin number Description Pin number Description
1 VBUS 4 ID
2 DM 5 GND
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Pin number Description Pin number Description
3 DP - -
7.6 CN11 STLINK-V3E USB Micro-B connector
The CN11 USB connector is used to connect the onboard STLINK-V3E facility to the PC for flashing and
debugging software.
Figure 11. CN11 Micro-B connector (Top view)
Table 12. CN11 USB Micro-B connector pinout
Terminal Description Terminal Description
1 VBUS (Power) 4 ID
2 DM 5 GND
3 DP 6 - 11 Shield
UM2651
CN11 STLINK-V3E USB Micro-B connector
UM2651 - Rev 2 page 20/37
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