UM2505
User manual
STM32G4 Nucleo-64 boards (MB1367)
Introduction
The STM32G4 Nucleo-64 boards based on the MB1367 reference board (NUCLEO-G431RB, NUCLEO-G474RE, NUCLEOG491RE) provide an affordable and flexible way for users to try out new concepts and build prototypes with the STM32G4
Series microcontrollers, choosing from the various combinations of performance, power consumption and features. The
ARDUINO® Uno V3 connectivity and the ST morpho headers provide an easy means of expanding the functionality of the
Nucleo open development platform with a wide choice of specialized shields. The STM32G4 Nucleo-64 boards do not require
any separate probe as they integrate the STLINK-V3E debugger/programmer. The STM32G4 Nucleo-64 boards come with the
comprehensive free software libraries and examples available with the STM32CubeG4 MCU Package.
Figure 1. NUCLEO-G474RE top view
Figure 2. NUCLEO-G474RE bottom view
Pictures are not contractual.
UM2505 - Rev 4 - February 2021
For further information contact your local STMicroelectronics sales office.
www.st.com
UM2505
Features
1
Features
•
•
•
•
•
•
•
STM32G4 microcontroller (Arm® Cortex®-M4 at 170 MHz) in LQFP64 package featuring:
–
128 KBytes of Flash memory and 32 Kbytes of SRAM for STM32G431RBT6
–
512 KBytes of Flash memory and 96 Kbytes of SRAM for STM32G491RET6
–
512 KBytes of Flash memory and 128 Kbytes of SRAM for STM32G474RET6
Fully compatible with STM32G473RET6 (512 Kbytes of Flash memory and 128 Kbytes of SRAM)
1 user LED
1 user and 1 reset push-buttons
32.768 kHz LSE crystal oscillator
24 MHz HSE on-board oscillator
Board connectors:
–
USB with Micro-AB
–
•
•
•
•
Note:
UM2505 - Rev 4
MIPI® debug connector
–
ARDUINO® Uno V3 expansion connector
–
ST morpho extension pin headers for full access to all STM32G4 I/Os
Flexible power-supply options: ST-LINK, USB VBUS, or external sources
On-board STLINK-V3E debugger/programmer with USB re-enumeration capability: mass storage, Virtual
COM port, and debug port
Comprehensive free software libraries and examples available with the STM32CubeG4 MCU Package
Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded
Workbench®, MDK-ARM, and STM32CubeIDE
Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
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Ordering information
2
Ordering information
To order an STM32G4 Nucleo-64 board, refer to Table 1. Additional information is available from the datasheet
and reference manual of the target STM32.
Table 1. List of available products
Order code
Board reference
NUCLEO-G431RB
STM32G431RBT6
NUCLEO-G474RE
MB1367
NUCLEO-G491RE
2.1
Target STM32
STM32G474RET6
STM32G491RET6
Codification
The meaning of the codification is explained in Table 2.
Table 2. Codification explanation
NUCLEO-G4XXRY
Description
Example: NUCLEO-G474RE
G4
MCU series in STM32 Arm Cortex MCUs
STM32G4 Series
XX
MCU line in the series
STM32G474 line
STM32 package pin count
64 pins
R
STM32 Flash memory size:
Y
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•
B for 128 Kbytes
•
E for 512 Kbytes
512 Kbytes
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Development environment
3
Development environment
3.1
System requirements
Note:
•
Windows® OS (7, 8, or 10), Linux® 64-bit, or macOS®
•
USB Type-A or USB Type-C® to Micro-B cable
macOS® is a trademark of Apple Inc. registered in the U.S. and other countries.
Linux® is a registered trademark of Linus Torvalds.
All other trademarks are the property of their respective owners.
3.2
Development toolchains
•
IAR Systems® - IAR Embedded Workbench®(1)
•
•
Keil® - MDK-ARM(1)
STMicroelectronics - STM32CubeIDE
1. On Windows® only.
3.3
Demonstration software
The demonstration software, included in the STM32Cube MCU Package corresponding to the on-board
microcontroller, is preloaded in the STM32 Flash memory for easy demonstration of the device peripherals in
standalone mode. The latest versions of the demonstration source code and associated documentation can be
downloaded from www.st.com.
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Conventions
4
Conventions
Table 3 provides the conventions used for the ON and OFF settings in the present document.
Table 3. ON/OFF convention
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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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UM2505
Quick start
5
Quick start
The STM32G4 Nucleo-64 board is a low-cost and easy-to-use development kit, used to evaluate and start
a development quickly with an STM32G4 Series microcontroller in LQFP64 package. Before installing and
using the product, accept the Evaluation Product License Agreement from the www.st.com/epla webpage. For
more information on the STM32G4 Nucleo-64 and for demonstration software, visit the www.st.com/stm32nucleo
webpage.
5.1
Getting started
Follow the sequence below to configure the STM32G4 Nucleo-64 board and launch the demonstration application
(refer to Figure 4 for component location):
1.
Check the jumper position on the board (refer to Table 4)
2.
For the correct identification of the device interfaces from the host PC and before connecting the board,
install the Nucleo USB driver available on the www.st.com/stm32nucleo website
3.
To power the board, connect the STM32G4 Nucleo-64 board to a PC with a USB cable (USB Type-A or USB
Type-C® to Micro-B) through the USB connector CN1 of the board
4.
Then, green LED LD3 (5V_PWR) and red LED LD1 (COM) light up, green LED LD2 (USER) blinks
5.
Press user button B1 (left blue USER button)
6.
Observe how the blinking of the green LED LD2 changes according to the clicks on button B1
7.
The software demonstration and the several software examples that allow users to exercise Nucleo features,
are available on the www.st.com/stm32nucleo webpage
8.
Develop your own application using the available examples
Table 4. Jumper configuration
Jumper
Position(1)
Definition
Comment(1)
JP1
NRST
OFF
STLINK-V3E reset
JP3
T_RST
ON
-
ON [1-2] (Default)
5V_USB_STLK (from ST-LINK)
ON [3-4] (optional)
5V_VIN
ON [5-6] (optional)
E5V
ON [7-8] (optional)
5V_USB_CHGR
JP5
5 V power-source selection
JP6
IDD
ON
-
JP7
BOOT0
OFF
-
JP8
VREF+ selection (VREF or VDD
voltage supply selection)
ON [1-2] (Default)
VREF+ supplied with VREF
ON [2-3] (optional)
VREF+ supplied with VDD
1. Default jumper state is shown in bold.
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Hardware layout and configuration
6
Hardware layout and configuration
The STM32G4 Nucleo-64 board is designed around the STM32 microcontrollers in a 64-pin LQFP package.
Figure 3 shows the connections between the STM32 and its peripherals (STLINK-V3E, push-buttons, LEDs, USB,
ARDUINO® Uno and ST morpho headers). Figure 4 and Figure 5 show the location of these features on the
STM32G4 Nucleo-64 board. The mechanical dimensions of the board are shown in Figure 6.
Figure 3. Hardware block diagram
USB
Micro-B
connector
(CN1)
GND
STLK_RST
Red LED
LD4 (OC)
Green/Orange LED LD1
(COM)
5V
PWR SEL
DEBUG
Embedded
STLINK-V3E
SWD
GND
STLINK-V3E part
VCP
UART
B1
button
USER
Green LED LD3
(5V_PWR)
B2
button
RESET
Green LED
LD2 (USER)
IDD
BOOT0
STM32G4XXRY
GPIO
xxx
GPIO
UM2505 - Rev 4
ST morpho
GPIO
Arduino™
VCP
UART
GPIO
Arduino™
ST morpho
SWD
VREF
OSC_32
OSC
32 kHz
crystal
24 MHz
crystal
Connectors
or jumpers
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PCB layout
6.1
PCB layout
Figure 4. Top layout
CN2
DFU connector
CN1 STLINK-V3E
LD1 bicolor LED
Micro-B USB connector
(COM)
JP1
LD4 red LED
LD3 green LED
STLINK-V3E reset
(Over current)
(5V_PWR)
U5 STM32F723IEK6
(STLINK-V3E MCU)
CN4
MIPI10 connector
JP5 5V power
source selection
X1 (25 MHz)
B1 USER button
B2 RESET button
JP3 Target reset
U12 3V3 regulator
LD39050PU33R
U11 5V_Vin regulator
LD1117S50TR
JP8
VREF selection
JP6
IDD measurement
CN6
ARDUINO® connector
CN5
ARDUINO® connector
JP7
BOOT0
U14 voltage ref. IC
TL1431CL5T
CN8
ARDUINO® connector
CN9
ARDUINO® connector
CN7
ST morpho pin header
CN10
ST morpho pin header
X2
32 kHz
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X3
24 MHz
HW102
product sticker
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PCB layout
Figure 5. Bottom layout
CN1 STLINK-V3E
CN2
Micro-B USB connector
DFU connector
JP1
STLINK-V3E reset
HW101
board sticker
JP5 5V power
source selection
CN4
MIPI10 connector
JP3 Target reset
JP8
VREF selection
JP6
IDD measurement
CN5
ARDUINO® connector
CN6
ARDUINO® connector
JP7 BOOT0
CN9
ARDUINO® connector
CN10
ST morpho pin header
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CN8
ARDUINO® connector
CN7
ST morpho pin header
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Mechanical drawing
6.2
Mechanical drawing
Figure 6. STM32G4 Nucleo 64 board mechanical drawing (in millimeter)
6.3
Embedded STLINK-V3E
There are two different ways to program and debug the onboard STM32 MCU:
•
Using the embedded STLINK-V3E
•
Using an external debug tool connected to the CN4 MIPI10 connector.
The STLINK-V3E programming and debugging tool is integrated in the STM32G4 Nucleo-64 board.
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Embedded STLINK-V3E
The embedded STLINK-V3E supports only SWD and VCP for STM32 devices. For information about debugging
and programming features of STLINK-V3, refer to the STLINK-V3SET debugger/programmer for STM8 and
STM32 user manual (UM2448), which describes in details all the STLINK-V3 features.
Features supported on STLINK-V3E:
•
5V power supplied by USB connector (CN1)
•
USB 2.0 high-speed-compatible interface
•
JTAG/serial wire debugging (SWD) specific features:
–
3 V to 3.6 V application voltage on the JTAG/SWD interface and 5 V tolerant inputs
–
JTAG
–
SWD and serial viewer (SWV) communication
•
MIPI10 connector (CN4)
•
Status LED LD1 (COM) that blinks during communication with the PC
•
Fault red LED LD4 (OC) alerting on USB overcurrent request
•
5 V / 300 mA output power supply capability (U4) with current limitation and LED
•
5 V power green LED LD3 (5V_PWR)
6.3.1
Drivers
Before connecting the STM32G4 Nucleo-64 board to a Windows 7®, Windows 8® or Windows 10® PC via USB,
a driver for the STLINK-V3E must be installed (not required for Windows 10®) . It is available at the www.st.com
website.
In case the STM32G4 Nucleo-64 board is connected to the PC before the driver is installed, some STM32G4
Nucleo-64 interfaces may be declared as “Unknown” in the PC device manager. In this case, the user must install
the dedicated driver files, and update the driver of the connected device from the device manager a shown in
Figure 7.
Note:
Prefer using the USB Composite Device handle for a full recovery.
Figure 7. USB composite device
Note:
37xx:
•
374E for STLINK-V3E without bridge functions
•
374F for STLINK-V3E with bridge functions
6.3.2
STLINK-V3E firmware upgrade
The STLINK-V3E embeds a firmware upgrade mechanism for in-situ upgrade through the USB port. As the
firmware may evolve during the lifetime of the STLINK-V3E product (for example new functionalities, bug fixes,
support for new microcontroller families), it is recommended to visit the www.st.com website before starting to use
the STM32G4 Nucleo-64 board and periodically, to stay up-to-date with the latest firmware version.
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Embedded STLINK-V3E
6.3.3
Using an external debug tool to program and debug the on-board STM32
There are two basic ways to support an external debug tool:
1.
Keep the embedded STLINK-V3E running. Power on the STLINK-V3E at first until the COM LED turns red.
Then connect the external debug tool through the CN4 STDC14/MIPI-10 debug connector
2.
Set the embedded STLINK-V3E in hig-impedance state: when jumper JP1 (STLK_RST) is ON, the
embedded STLINK-V3E is in RESET state and all GPIOs are in high-impedance; then, connect the external
debug tool to debug connector CN4.
Figure 8. Connecting an external debug tool to program the on-board STM32G4
Table 5. MIPI10 / STDC14 debug connector (CN4)
UM2505 - Rev 4
MIPI10 pin
STDC14 pin
CN4
-
1
NC
Reserved
-
2
NC
Reserved
1
3
3V3
Target VCC
2
4
T_SWDIO
3
5
GND
4
6
T_SWCLK
5
7
GND
6
8
T_SWO
7
9
NC
Function
Target SWDIO using SWD protocol or Target JTMS (T_JTMS) using
JTAG protocol
Ground
Target SWCLK using SWD protocol or Target JCLK (T_JCLK) using
JTAG protocol
Ground
Target SWO using SWD protocol or Target JTDO (T_JTMS) using
JTAG protocol
Not connected
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UM2505
Power supply
6.4
MIPI10 pin
STDC14 pin
CN4
Function
8
10
T_JTDI
Not used by SWD protocol, Target JTDI (T_JTDI) using JTAG protocol,
only for external tools
9
11
GNDDetect
10
12
T_NRST
Target NRST using SWD protocol or Target JTMS (T_JTMS) using
JTAG protocol
-
13
T_VCP_RX
Target RX used for VCP (must be UART dedicated to bootloader)
-
14
T_VCP_TX
Target TX used for VCP (must be UART dedicated to bootloader)
GND detect for plug indicator, used on SWD and JTAG neither
Power supply
The power supply can be provided by five different sources:
•
A host PC connected to CN1 through a USB cable (default setting)
•
An external 7 V - 12 V (VIN) power supply connected to CN7 pin 24
•
An external 5 V (E5V) power supply connected to CN7 pin 6
•
An external 5 V USB charger (5V_USB_CHGR) connected to CN1
•
An external 3.3 V power supply (3V3) connected to CN7 pin 16
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UM2505
Power supply
Figure 9. STM32G4 Nucleo-64 board power tree
In case 5V_VIN, E5V, 5V_USB_CHGR, or 3V3 is used to power the STM32G4 Nucleo-64 board, this power
source must comply with the EN-60950-1: 2006+A11/2009 standard and must be Safety Extra Low Voltage
(SELV) with limited power capability.
If the power supply is 3V3, the ST-LINK is not powered and cannot be used.
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Power supply
Power supply input from STLINK-V3E USB connector (default setting)
The STM32G4 Nucleo-64 board and shield can be powered from STLINK-V3E connector CN1 (5 V) by placing a
jumper between pins 1-2 of JP5, “5V_SEL”, as illustrated in Figure 10. This is the default setting.
Figure 10. Power supply input from STLINK-V3E USB connector with PC (5 V, 500 mA max)
PC
< 500 mA
CN1
STLINK-V3E
USB
Power switch
5V
U4
U5
STM32F723
STLINK-V3E
5V
U12
LDO
3V3
3V3
Legend:
UM2505 - Rev 4
5V
3.3 V
page 15/44
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Power supply
If the USB enumeration succeeds, the 5V_USB_STLK power is enabled, by asserting the T_PWR_EN signal
from STM32F723IEK6 “STLINK V3” (U5). This pin is connected to a power switch STMPS2151STR (U4), which
powers the board. The power switch STMPS2151STR (U4) features also a current limitation to protect the PC in
case of short-circuit on board. If an overcurrent (more than 500 mA) happens on board, the red LED LD4 is lit.
The Nucleo board and its shield can be powered from ST-LINK USB connector CN1, but only ST-LINK circuit gets
power before USB enumeration, because the host PC only provides 100 mA to the board at that time.
During the USB enumeration, the Nucleo board requires 500 mA power from the host PC:
•
If the host is able to provide the required power, the enumeration finishes by a “SetConfiguration” command
and then, the power switch STMPS2151STR is switched ON, the green LED LD3 (5V_PWR) is turned ON,
thus Nucleo board and its shield on it can consume 500 mA at the maximum.
•
If the host is not able to provide the requested current, the enumeration fails. Therefore, the
STMPS2151STR power switch (U4) remains OFF and the MCU part including the extension board is not
powered. As a consequence, the green LED LD5 remains turned OFF. In this case, it is mandatory to use an
external power supply.
Caution:
If the maximum current consumption of the STM32G4 Nucleo-64 board and its shield boards exceeds 300 mA, it
is mandatory to power the STM32G4 Nucleo-64 board with an external power supply connected to E5V, VIN or
3.3 V.
External power supply input from VIN (7 V - 12 V, 800 mA max)
When the STM32G4 Nucleo-64 board is power-supplied by VIN (refer to Table 6 and Figure 11), the jumper
configuration must be the following: jumper JP2 on pins 3-4 “5V_VIN”.
The STM32G4 Nucleo-64 board and its shield boards can be powered in three different ways from an external
power supply, depending on the voltage used. The three cases are summarized in Table 6.
Table 6. External power sources: VIN (7 V - 12 V)
Input power
name
VIN
UM2505 - Rev 4
Connector
pins
CN6 pin 8
CN7 pin 24
Voltage range
Maximum
current
Limitation
From 7 V to 12 V only and input current capability is
linked to input voltage:
7 V to 12 V
800 mA
•
800 mA input current when VIN = 7 V
•
450 mA input current when 7 V < VIN < 9 V
•
250 mA input current when 9 V < VIN < 12 V
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Power supply
Figure 11. Power supply input from VIN (7 V - 12 V, 800 mA max)
5V
U11
LD1117
S50TR
U12
LDO
3V3
3V3
VIN < 12 V
Legend:
VIN < 12 V
5V
3.3 V
Refer to Section 6.4.1 for debugging when using an external power supply.
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Power supply
External power supply input from E5V (5 V, 500 mA max)
When the STM32G4 Nucleo-64 board is power-supplied by E5V (refer to Table 7 and Figure 12), the jumper
configuration must be the following: jumper JP5 on pins 5-6 “E5V”.
Table 7. External power sources: E5V (5 V)
Input power name
Connector pins
Voltage range
Maximum current
E5V
CN7 pin 6
4.75 V to 5.25 V
500 mA
Figure 12. Power supply input from 5V_EXT (5 V, 500 mA max)
5V
U12
LDO
3V3
Legend:
5V
3V3
3.3 V
Refer to Section 6.4.1 for debugging when using an external power supply.
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Power supply
External power supply input from USB charger (5 V)
When the STM32G4 Nucleo-64 board is power-supplied by a USB charger on CN1 (refer to Table 8 and
Figure 13), the jumper configuration must be the following: jumper JP2 on pins 7-8 “5V_CHGR”.
Table 8. External power sources: 5V_CHGR (5 V)
Input power name
Connector pins
Voltage range
Maximum current
5V_CHGR
CN1
5V
-
Figure 13. Power supply input from ST-LINK USB connector with USB charger (5 V)
USB charger
CN1
STLINK-V3E
USB
No debug
5V
U12
LDO
3V3
3V3
Legend:
UM2505 - Rev 4
5V
3.3 V
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Power supply
External power supply input from external 3.3 V
When the 3.3 V is provided by a shield board, it is interesting to use the 3.3 V (CN6 pin 4 or CN7 pin 16) directly
as power input (refer to Table 9 and Figure 14). In this case, the programming and debugging features are not
available, since the ST-LINK is not powered.
Table 9. External power sources: 3V3
Input power name
Connector pins
CN6 pin 4
3V3
CN7 pin 16
Voltage range
Maximum current
3 V to 3.6 V
1.3 A
Figure 14. Power supply input from external 3V3
No debug
X
No
jumper
3V3
Legend:
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3.3 V
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Clock sources
6.4.1
Debugging while using VIN or EXT as an external power supply
When powered by VIN or E5V, it is still possible to use the ST-LINK for programming or debugging only, but it is
mandatory to power the board first using VIN or EXT, then to connect the USB cable to the PC. In this way the
enumeration succeeds, thanks to the external power source.
The following power-sequence procedure must be respected:
1.
Connect jumper JP5 between pins 5 & 6 for E5V or between pins 3 & 4 for VIN
2.
Connect the external power source to VIN or E5V
3.
Power on the external power supply 7V < VIN < 12 V for VIN, or 5V for E5V
4.
Check that the green LED LD3 is turned ON
5.
Connect the PC to the USB connector CN1
If this order is not respected, the board may be powered by USB first, then by VIN or E5V as the following risks
may be encountered:
1.
If more than 300 mA current is needed by the board, the PC may be damaged or the current supplied can be
limited by the PC. As a consequence, the board is not powered correctly.
2.
300 mA is requested at enumeration so there is risk that the request is rejected and the enumeration does
not succeed if the PC cannot provide such current. Consequently, the board is not power supplied (LED LD3
remains OFF).
6.5
6.5.1
Clock sources
HSE clock (high-speed external clock)
There are four ways to configure the pins corresponding to the high-speed external clock (HSE):
•
MCO from ST-LINK: MCO output of ST-LINK is used as input clock. This frequency cannot be changed, it is
fixed at 8 MHz and connected to the PF0-OSC_IN of the STM32 microcontroller. The configuration must be:
–
SB27 ON
–
SB25 and SB26 OFF
–
SB24 and SB28 OFF
•
HSE on-board oscillator from X3 crystal (default): For typical frequencies and its capacitors and
resistors, refer to the STM32 microcontroller datasheet and to the Oscillator design guide for STM8S,
STM8A and STM32 microcontrollers Application note (AN2867) for the oscillator design guide. The X3
crystal has the following characteristics: 24 MHz, 6 pF load capacitance, 20 ppm. It is recommended to use
NX2016SA-24MHz-EXS00A-CS10820 manufactured by NDK. The configuration must be:
–
SB25 and SB26 ON
–
SB24 and SB28 OFF
–
SB27 OFF
–
C56 and C59 soldered with 6.8 pF capacitors
•
Oscillator from external PF0: from an external oscillator through the pin 29 of the CN7 connector. The
configuration must be:
–
SB28 ON
–
SB24 OFF
–
SB25 and SB26 OFF
–
SB27 OFF
•
HSE not used: PF0 and PF1 are used as GPIOs instead of as clock. The configuration must be:
–
SB24 and SB28 ON
–
SB27 OFF
–
SB25 and SB26 OFF
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Board functions
6.5.2
LSE clock (low-speed external clock) – 32.768 kHz
There are three ways to configure the pins corresponding to the low-speed clock (LSE):
•
On-board oscillator (default): X2 crystal. Refer to the Oscillator design guide for STM8S, STM8A
and STM32 microcontrollers application note (AN2867). It is recommended to use NX3215SA-32.768kHzEXS00A-MU00525 (32.768 kHz, 6 pF load capacitance, 20 ppm) from NDK.
–
SB30 and SB31 ON
–
SB29 and SB32 OFF
•
Oscillator from external PC14: from external oscillator through the pin 25 of CN7 connector. The
configuration must be:
–
SB29 and SB32 ON
–
SB30 and SB31 OFF
•
LSE not used: PC14 and PC15 are used as GPIOs instead of low-speed clock. The configuration must be:
–
SB29 and SB32 ON
–
SB30 and SB31 OFF
6.6
Board functions
6.6.1
LEDs
LD1 STLINK-V3E COM LED
The bicolor LED LD1 (green, red) provides information about STLINK-V3E communication status. LD1 default
color is red. LD1 turns to green to indicate that communication is in progress between the PC and the STLINKV3E, with the following setup:
•
Blinking red: the first USB enumeration with the PC is taking place
•
Red on: when the initialization between the PC and STLINK-V3E is complete
•
Blinking red/green: during communication with target
•
Green on: communication finished and successful
•
Orange on: communication failure
LD2 USER
This green LED is a user LED connected to STM32G4 I/O PA5 (SB6 ON) corresponding to the ARDUINO® D13.
To light LED LD2, a high logic state “1” must be written in the corresponding GPIO PA5. A transistor is used to
drive the LED LD2. LD2 consumption does not impact the VDD STM32G4 power measurement, since LD2 is
isolated from it.
LD3 PWR
The green LED indicates that the STM32G4 part is powered and +5 V power is available on CN6 pin 5 and CN7
pin 18.
LD4 USB power fault (OC, overcurrent)
LD4 indicates that the board power consumption on USB ST-LINK exceeds 500 mA. Consequently, the user must
power the board using an external power supply.
6.6.2
Push-buttons
B1 USER (blue button)
The user button is connected to the STM32G4 I/O PC13 by default (Tamper support, SB16 ON and SB21 OFF) or
PA0 (Wakeup support, SB21 ON and SB16 OFF) of the STM32G4 microcontroller.
B2 RESET (black button)
This push-button is connected to NRST (PG10-NRST) and is used to RESET the STM32G4 microcontroller.
UM2505 - Rev 4
page 22/44
UM2505
Board functions
6.6.3
MCU voltage selection on VREF+
The STM32G4 Nucleo-64 board offers the possibility to supply the STM32G4 microcontroller with either VREF or
VDD on its VREF+ input voltage pin.
VREF+ is targeted to offer high-end analog device, especially for precise analog applications (ADC converters
usage) with the STM32G4 microcontroller.
In the STM32G4 Nucleo-64 board, the VREF+ can be supplied with a very stable output voltage provided by the
TL1431CL5T. The TL1431CL5T is an adjustable shunt voltage reference with guaranteed temperature stability
over the entire operating temperature range. The output voltage may be set to any value between 2.5 V and up to
36 V with two external resistors. The TL1431CL5T operates with a wide current range from 1 mA to 100 mA with
a typical dynamic impedance of 0.2 Ω.
JP8 jumper is used to select either the VREF or VDD voltage for VREF+.
•
Place the JP8 jumper on [1-2] to supply the MCU VREF+ with VREF
–
To have VREF at 2.5 V, then SB14 is fitted and R34 is not fitted
–
To have VREF at 3.25 V, then SB14 is not fitted. VREF = 2,5 × (1 + (R33 / R34)) =
2,5 × (1 + (10k / 33k)).
•
Place the JP8 jumper on [2-3] to supply the MCU VREF+ with VDD
6.6.4
Current consumption measurement (IDD)
Jumper JP6, labeled IDD, is used to measure the STM32G4 microcontroller consumption by removing the jumper
and by connecting an ammeter:
•
JP6 ON: STM32 is powered with 3V3 voltage (default)
•
JP6 OFF: an ammeter must be connected to measure the STM32G4 current. If there is no ammeter, the
STM32 is not powered.
To get a correct and complete current consumption of the STM32G4, jumper JP8 must be set to [2-3] to supply
the MCU VREF+ with VDD, otherwise, the current consumption at pin VREF+ is not taken into account in the IDD
(through jumper JP6).
6.6.5
Virtual COM port (VCP): LPUART and USART
The STM32G4 Nucleo-64 board offers the possibility to connect an LPUART or a USART interface to the
STLINK-V3E, ARDUINO® Uno V3 connector (CN9 pins 2 and 1), or ST morpho connector (CN10 pins 35 and 37).
The selection is done by setting the related solder bridges as detailed in Table 10 and Table 11.
Table 10. USART1 connection
Feature(1)
Solder bridge configuration(1)
SB13, SB19: ON
SB12, SB20, SB18, SB22: OFF
SB12, SB20: ON
SB13, SB19, SB17, SB23: OFF
USART1 (PC4/PC5) connected to ARDUINO® (D1 & D0)
and ST morpho connector (CN10 pin 35 & 37).
USART1 (PC4/PC5) connected to STLINK-V3E Virtual COM
port.
1. The default configuration is shown in bold
Table 11. LPUART1 connection
Solder bridge configuration(1)
SB17, SB23: ON
SB18, SB22, SB12, SB20: OFF
SB18, SB22: ON
SB17, SB23, SB13, SB19: OFF
Feature(1)
LPUART1 (PA2/PA3) connected to STLINK-V3E Virtual
COM port.
LPUART1 (PA2/PA3) connected to ARDUINO® (D1 & D0) and
ST morpho connector (CN10 pin 35 & 37).
1. The default configuration is shown in bold
UM2505 - Rev 4
page 23/44
UM2505
Solder bridges
By default:
•
Communication between the target STM32G4 and the STLINK-V3E MCU is enabled on LPUART1 to
support the Virtual COM port
•
6.7
Communication between the target STM32G4 and ARDUINO® (and ST morpho) connectors is enabled on
USART1
Solder bridges
All 41 solder bridges are located on the bottom layer of the STM32G4 Nucleo-64 board.
Table 12. Solder bridge configuration
Solder bridge control
100 nF on
PG10-NRST
Solder
bridge (SB)
SB2
PC5 on ST morpho
SB3
PB8 on Morpho
SB4
output
SB5
User LED LD2
SB6
PA15 on Morpho
SB7
SMD ferrite bead L1
SB8
JTDI on MIPI10
SMD ferrite bead L2
AGND
PC4
SB9
SB12
USART1 TX
SB13
UM2505 - Rev 4
100 nF capacitor grounded to PG10-NRST of the
STM32G4
OFF
100 nF capacitor disconnected from PG10-NRST of the
STM32G4
ON
PB8 connected to ARDUINO® D14
OFF
PB8 not connected to ARDUINO® D14
ON
PC5 connected to ST morpho CN10 pin 6
OFF
PC5 not connected to ST morpho CN10 pin 6
ON
PB8 connected to ST morpho CN7 pin 7
OFF
PB8 not connected to ST morpho CN7 pin 7
ON
U12 LDO output provides 3.3 V
OFF
U12 LDO output does NOT provide 3.3 V, user must connect
an external 3.3 V source.
ON
User LED driven by PA5 (ARD_D13)
OFF
User LED not driven
ON
PA15 connected to ST morpho CN7 pin 17
OFF
PA15 not connected to ST morpho CN7 pin 17
ON
SMD ferrite bead L1 shunted. VDDA connected on VDD
voltage supply
OFF
SMD ferrite bead L1 on STM32G4 VDDA voltage supply
ON
JTDI connected to MIPI10 connector (CN4 pin 10)
OFF
JTDI not connected to MIPI10 connector (CN4 pin 10)
ON
SMD ferrite bead L2 shunted. VREF+ connected to either
VREF or VDD depending on the jumper position on JP8
OFF
SMD ferrite bead L2 on VREF+ (either VREF or VDD
voltage supply (depending on the jumper position on
JP8)).
ON
AGND connected to GND. Reserved, do not modify.
OFF
AGND not connected to GND.
ON
STLINK_TX (T_VCP_TX) connected to USART1 TX PC4
OFF
STLINK_TX (T_VCP_TX) not connected to USART1 TX
PC4
ON
ARD_D1_TX connected to USART1 TX PC4
OFF
ARD_D1_TX not connected to USART1 TX PC4
SB10
SB11
Description(1)
ON
SB1
PB8 on ARD_D14
3.3 V LDO
State(1)
page 24/44
UM2505
Solder bridges
Solder bridge control
VREF voltage
(3.25 V or 2.5 V)
T_SWO on PB3
PA2
Solder
bridge (SB)
SB15
SB17
SB18
SB23
LPUART1 RX
SB22
PC5
SB20
USART1 RX
SB19
SB16
USER button
SB21
SB25
&
SB26
HSE CLK
SB24
selection
SB28
SB27
PC4 on ST morpho
SB33
VBAT
SB38
LSE CLK
selection
UM2505 - Rev 4
Description(1)
ON
R33 = 10 kΩ is shunted. Then VREF = 2.5 V. Do not forget to
remove in that case R34 = 33 kΩ.
OFF
R33 = 10 kΩ is not shunted. Then VREF = 3.25 V. In that
case, R34 = 33 kΩ must be fitted.
ON
T_SWO connected to PB3.
SB14
LPUART1 TX
PA3
State(1)
SB31
&
SB30
OFF
T_SWO not connected to PB3 and isolated from ARD_D3.
ON
STLINK_TX (T_VCP_TX) connected to LPUART1 TX PA2.
OFF
STLINK_TX (T_VCP_TX) not connected to LPUART1 TX
PA2.
ON
ARD_D1_TX connected to LPUART1 TX PA2.
OFF
ARD_D1_TX not connected to LPUART1 TX PA2.
ON
STLINK_RX (T_VCP_RX) connected to LPUART1 RX PA3.
OFF
STLINK_RX (T_VCP_RX) not connected to LPUART1 RX
PA3.
ON
ARD_D0_RX connected to LPUART1 RX PA3.
OFF
ARD_D0_RX not connected to LPUART1 RX PA3.
ON
STLINK_RX (T_VCP_RX) connected to USART1 RX PC5.
OFF
STLINK_RX (T_VCP_RX) not connected to USART1 RX
PC5.
ON
ARD_D0_RX connected to USART1 RX PC5.
OFF
ARD_D0_RX not connected to USART1 RX PC5.
ON
USER button connected to PC13.
OFF
USER button not connected to PC13.
ON
USER button connected to PA0.
OFF
USER button not connected to PA0.
ON
HSE provided by external HSE 24 MHz CLK X3.
OFF
HSE not provided by external HSE 24 MHz CLK X3.
ON
PF1-OSC_IN connected to ST morpho connector I/O usage
(CN7 pin 31).
OFF
PF1-OSC_IN not connected to ST morpho connector.
ON
PF0-OSC_OUT connected to ST morpho connector I/O usage
(CN7 pin 29).
OFF
PF0-OSC_OUT not connected to ST morpho connector.
ON
ST-LINK MCO used for HSE CLK.
OFF
ST-LINK MCO not used for HSE CLK.
ON
PC4 connected to Morpho CN10 pin 34.
OFF
PC4 not connected to Morpho CN10 pin 34.
ON
VBAT (pin1 of STM32G4) powered by VDD.
OFF
VBAT (pin1 of STM32G4) supplied separately (through
morpho connector CN7 pin 33).
ON
LSE provided by external LSE 32.768 kHz CLK X2.
OFF
LSE not provided by external LSE 32.768 kHz CLK X2.
page 25/44
UM2505
Solder bridges
Solder bridge control
Solder
bridge (SB)
SB32
LSE CLK
selection
State(1)
ON
PC14-OSC32_IN connected to ST morpho connector I/O
usage (CN7 pin 25).
OFF
PC14-OSC32_IN not connected to ST morpho connector.
ON
PC15-OSC32_OUT connected to ST morpho connector I/O
usage (CN7 pin 27).
OFF
PC15-OSC32_OUT not connected to ST morpho
connector.
ON
PB9 connected to ARD_A4 and connected to CN7 pin 36.
OFF
PB9 not connected to ARD_A4 and connected to CN7 pin
36.
ON
PC1 connected to ARD_A4 and connected to CN7 pin 36.
OFF
PC1 not connected to ARD_A4 and connected to CN7 pin 36.
ON
PC0 connected to ARD_A5 and connected to CN7 pin 38.
OFF
PC0 not connected to ARD_A5 and connected to CN7 pin 38.
ON
PA15 connected to ARD_A5 and connected to CN7 pin 38.
OFF
PA15 not connected to ARD_A5 and connected to CN7
pin 38.
ON
IOREF connected to 3V3 power supply.
OFF
IOREF not connected to 3V3 power supply.
ON
T_SWDIO connected to PA13.
OFF
T_SWO not connected to PA13.
ON
T_SWCLK connected to PA14.
OFF
T_SWCLK not connected to PA14.
SB29
PB9 on ARD_A4
SB34
PC1 on ARD_A4
SB35
PC0 on ARD_A5
SB36
PA15 on ARD_A5
SB37
IOREF and 3V3 connection
SB39
T_SWDIO
on PA13
T_SWCLK
on PA14
SB40
SB41
Description(1)
1. The default SB state is in bold.
All the other solder bridges present on the STM32G4 Nucleo-64 board are used to configure several I/Os and
power-supply pins for compatibility of features and pinout with the target STM32G4 supported.
UM2505 - Rev 4
page 26/44
UM2505
Board connectors
7
Board connectors
Several connectors are implemented on the STM32G4 Nucleo-64 board.
7.1
STLINK-V3E USB Micro-B connector CN1
The USB connector CN1 is used to connect the embedded STLINK-V3E to the PC for the programming and
debugging purposes.
Figure 15. USB Micro-B connector CN1 (front view)
Table 13. USB Micro-B connector CN1 pinout
Connector
CN1
7.2
Pin
number
Pin name
Signal name
STLINK-V3E MCU pin
Function
1
VBUS
5V_USB_CHGR
-
5 V power
2
DM
USB_DEV_HS_CN_N
R14
USB diff pair N
3
DP
USB_DEV_HS_CN_P
R15
USB diff pair P
4
ID
-
-
-
5
GND
-
-
GND
MIPI10 connector CN4
Figure 16. MIPI10 connector CN4
13
11
9
7
5
3
1
14
12
10
8
6
4
2
The MIPI10 connector is implemented with a footprint compatible with the STDC14 footprint. The related pinout
for the MIPI10 connector is listed in Table 14.
UM2505 - Rev 4
page 27/44
UM2505
ARDUINO® Uno V3 connectors CN5, CN6, CN8 and CN9
Table 14. MIPI10 connector CN4 pinout (STDC14 pinout compatible)
Connector
CN4
7.3
Pin number
Description
Pin number
Description
1
-
2
-
3
VDD (3V3)
4
T_SWDIO (PA13)
5
GND
6
T_SWCLK (PA14)
7
KEY (connected to GND)
8
T_SWO (PB3)
9
-
10
T_JTDI (PA15)
11
GNDDetect (connected to GND through
a 100 Ω resistor)
12
T_NRST
13
T_VCP_RX (PA3 by default or PC5)
14
T_VCP_TX (PA2 by default or PC4)
ARDUINO® Uno V3 connectors CN5, CN6, CN8 and CN9
The ARDUINO® connectors CN5, CN6, CN8 and CN9 are female connectors compatible with the ARDUINO®
standard. Most shields designed for ARDUINO® can fit with the STM32G4 Nucleo-64 board.
The ARDUINO® connectors on the STM32G4 Nucleo-64 board support the ARDUINO® Uno V3.
Figure 17. ARDUINO® connectors
UM2505 - Rev 4
CN6
Arduino_PWR
CN5
Arduino_D[8:15]
CN8
Arduino_A[0:5]
CN9
Arduino_D[0:7]
page 28/44
UM2505
ARDUINO® Uno V3 connectors CN5, CN6, CN8 and CN9
Figure 18. ARDUINO® and ST morpho connectors pinout
Note:
ARDUINO® Uno V3 D0 and D1 signals are connected by default on USART1 (MCU I/O PC4 and PC5). For
details about how to modify the UART interface, refer to Section 6.6.5 Virtual COM port (VCP): LPUART and
USART.
Table 15. ARDUINO® connectors pinout
Connector
CN6
CN8
UM2505 - Rev 4
Pin number
Pin name
Signal name
STM32 pin(1)
Function(1)
1
NC
-
-
Reserved for test
2
IOREF
-
-
I/O reference
3
NRST
NRST
PG10-NRST
4
3V3
-
-
3V3 input / output
5
5V
-
-
5 V output
6
GND
-
-
GND
7
GND
-
-
GND
8
VIN
-
-
7 V - 12 V input power
1
A0
ADC
PA0
ADC12_IN1
2
A1
ADC
PA1
ADC12_IN2
3
A2
ADC
PA4
ADC2_IN17
4
A3
ADC
PB0
ADC3_IN12 or ADC1_IN15
5
A4
ADC
PC1 /
PB9
ADC12_IN7 /
I2C1_SDA
6
A5
ADC
PC0 /
PA15
ADC12_IN6 /
I2C1_SCL
RESET
page 29/44
UM2505
ST morpho connectors CN7 and CN10
Connector
CN5
CN9
Pin number
Pin name
Signal name
STM32 pin(1)
Function(1)
10
SCL/D15
ARD_D15
PB8
I2C1_SCL
9
SDA/D14
ARD_D14
PB9
I2C1_SDA
8
VREFP
VREFP
VREF+
7
GND
-
-
6
SCK/D13
ARD_D13
PA5
SPI1_SCK
5
MISO/D12
ARD_D12
PA6
SPI1_MISO
4
PWM/MOSI/D11
ARD_D11
PA7
TIM3_CH2 / SPI1_MOSI
3
PWM/CS/D10
ARD_D10
PB6
TIM4_CH1 / SPIx_CS
2
PWM/D9
ARD_D9
PC7
TIM3_CH2 or TIM8_CH2
1
D8
ARD_D8
PA9
IO
8
D7
ARD_D7
PA8
IO
7
PWM/D6
ARD_D6
PB10
TIM2_CH3
6
PWM/D5
ARD_D5
PB4
TIM3_CH1
5
D4
ARD_D4
PB5
IO
4
PWM/D3
ARD_D3
PB3
TIM2_CH2
3
D2
ARD_D2
PA10
IO
2
TX/D1
ARD_D1
PA2 /
PC4
LPUSART1_TX /
USART1_TX
1
RX/D0
ARD_D0
PA3 /
PC5
LPUSART1_RX /
USART1_RX
Voltage reference
GND
1. Default configuration is in bold.
7.4
ST morpho connectors CN7 and CN10
ST morpho connectors CN7 and CN10 are male pin headers accessible on both sides of the board. All signals
and power pins of the STM32G4 MCU are available on the ST morpho connectors. These connectors can also be
probed by an oscilloscope, logical analyzer, or voltmeter.
UM2505 - Rev 4
page 30/44
UM2505
ST morpho connectors CN7 and CN10
Figure 19. ST morpho connectors
CN7
MORPHO[1:38]
CN10
MORPHO[1:38]
The pinout of ST morpho connectors CN7 and CN10 is shown in Figure 18. ARDUINO® and ST morpho
connectors pinout.
Note:
The D0 and D1 signals are connected by default to USART1 (MCU I/O PC4 and PC5). For details about how to
modify the UART interface, refer to Section 6.6.5 Virtual COM port (VCP): LPUART and USART.
Table 16 shows the pin assignment of each STM32G4 I/O on the ST morpho connector.
Table 16. Pin assignment of the ST morpho connectors
CN7 odd pins
UM2505 - Rev 4
CN7 even pins
name(1)
CN10 odd pins
Pin nbr
Pin name
Pin nbr
1
PC10
2
PC11
1
3
PC12
4
PD2
5
VDD
6
E5V
7
BOOT0(2)
8
9
NC
11
CN10 even pins
Pin nbr
Pin name
PC9
2
PC8
3
PB8
4
PC6
5
PB9
6
PC5
GND
7
VREFP(3)
8
5V_USB_CHGR(4)
10
NC
9
GND
10
NC
NC
12
IOREF
11
PA5
12
PA12
13
PA13(5)
14
NRST
13
PA6
14
PA11
15
PA14(5)
16
3V3
15
PA7
16
PB12
17
PA15
18
5V
17
PB6
18
PB11
Pin
Pin nbr
name(1)
Pin
page 31/44
UM2505
ST morpho connectors CN7 and CN10
CN7 odd pins
CN7 even pins
CN10 odd pins
CN10 even pins
Pin nbr
Pin name
Pin nbr
Pin name(1)
Pin nbr
Pin name(1)
Pin nbr
Pin name
19
GND
20
GND
19
PC7
20
GND
21
PB7
22
GND
21
PA9
22
PB2
23
PC13
24
VIN
23
PA8
24
PB1
25
PC14
26
NC
25
PB10
26
PB15
27
PC15
28
PA0
27
PB4
28
PB14
29
PF0
30
PA1
29
PB5
30
PB13
31
PF1
32
PA4
31
PB3
32
AGND
33
VBAT
34
PB0
33
PA10
34
PC4
35
PC2
36
PC1/PB9
35
PA2 / PC4
36
NC
37
PC3
38
PC0/PA15
37
PA3 / PC5
38
NC
1. Default configuration in bold.
2. BOOT0 is not connected by default. The BOOT0 function is done by SW:
•
Option byte nSWBOOT0 must be set to 0 (in that case, BOOT0 is taken from the Option byte nBOOT0)
•
Option byte nBOOT0 must be set to 1 (in that case BOOT0 is active low).
If nSWBOOT0 is set to 0, the BOOT0 is taken from pin PB8 / BOOT0.
3. AVDD connected to VREF+
4. 5V_USB_CHGR is the 5 V power from the STLINK-V3E USB connector that rises first. It rises before the 5 V rising on the
board.
5. PA13 and PA14 are shared with SWD signals connected to STLINK-V3E. It is not recommended to use them as I/O pins.
UM2505 - Rev 4
page 32/44
UM2505
STM32G4 Nucleo-64 I/O assignment
8
STM32G4 Nucleo-64 I/O assignment
Table 17. Nucleo-64 I/O assignment
UM2505 - Rev 4
Main feature / optional feature / (SB)(1)
Pin
Pin name
Signal or label
1
VBAT
VBAT
VBAT voltage supply
2
PC13
PC13
USER button / IO
3
PC14-OSC32_IN
OSC32_IN / PC14
LSE CLK / IO
4
PC15-OSC32_OUT
OSC32_OUT / PC15
LSE CLK / IO
5
PF0-OSC_IN
OSC_IN / PF0
HSE CLK / I
6
PF1-OSC_OUT
OSC_OUT / PF1
HSE CLK / O
7
PG10-NRST
T_NRST
8
PC0
PC0
ARD_A5 - ADC12_IN6
9
PC1
PC1
ARD_A4 - ADC12_IN7
10
PC2
PC2
IO
11
PC3
PC3
IO
12
PA0
PA0
ARD_A0 - ADC12_IN1 / User Button
13
PA1
PA1
ARD_A1 - ADC12_IN2
14
PA2
LPUART1_TX
15
VSS
GND
PWR GND
16
VDD
VDD
PWR VDD supply
17
PA3
LPUART1_RX
18
PA4
PA4
ARD_A2 - ADC2_IN17
19
PA5
PA5
ARD_D13 - SPI1_CLK
20
PA6
PA6
ARD_D12 - SPI1_MISO
21
PA7
PA7
ARD_D11 - TIM3_CH2 / SPI1_MOSI
22
PC4
PC4
IO
23
PC5
PC5
IO
24
PB0
PB0
ARD_A3 - ADC3_IN12
25
PB1
PB1
IO
26
PB2
PB2
IO
27
VSSA
AGND
AGND
28
VREF+
VREFP
Reference voltage supply
29
VDDA
AVDD
Analog voltage supply
30
PB10
PB10
ARD_D6 / TIM2_CH3
31
VSS
GND
GND
32
VDD
VDD
VDD voltage supply
33
PB11
PB11
IO
34
PB12
PB12
IO
35
PB13
PB13
IO
36
PB14
PB14
IO
37
PB15
PB15
IO
STM32G4 RESET
ARD_D1 / STLINK_TX (T_VCP_TX)
ARD_D0 / STLINK_RX (T_VCP_RX)
page 33/44
UM2505
STM32G4 Nucleo-64 I/O assignment
Main feature / optional feature / (SB)(1)
Pin
Pin name
Signal or label
38
PC6
PC6
IO
39
PC7
PC7
ARD_D9-TIM3_CH2 (or TIM8_CH2) / IO
40
PC8
PC8
IO
41
PC9
PC9
IO
42
PA8
PA8
ARD_D7 - IO
43
PA9
PA9
ARD_D8 - IO
44
PA10
PA10
ARD_D2 - IO
45
PA11
PA11
IO
46
PA12
PA12
IO
47
VSS
GND
GND
48
VDD
VDD
VDD voltage supply
49
PA13
T_SWDIO
T_SWDIO
50
PA14
T_SWCLK
T_SWCLK
51
PA15
T_JTDI
52
PC10
PC10
IO
53
PC11
PC11
IO
54
PC12
PC12
IO
55
PD2
D2
IO
56
PB3
PB3
ARD_D3 - TIM2_CH2 / T_SWO
57
PB4
PB4
ARD_D5 - TIM3_CH1 / IO
58
PB5
PB5
ARD_D4 - IO
59
PB6
PB6
ARD_D10 - SPIx_CS / TIM4_CH1
60
PB7
PB7
IO
61
PB8-BOOT0
BOOT0
62
PB9
PB9
ARD_D14 - I2C1_SDA
63
VSS
GND
GND
64
VDD
VDD
VDD voltage supply
T_JTDI / I2C1_SCL
BOOT0
1. The default configuration is shown in bold.
UM2505 - Rev 4
page 34/44
UM2505
STM32G4 Nucleo-64 product information
9
STM32G4 Nucleo-64 product information
9.1
Product marking
The stickers located on the top or bottom side of the PCB provide product information:
•
Product order code and product identification for the first sticker
•
Board reference with revision, and serial number for the second sticker
On the first sticker, the first line provides the product order code, and the second line the product identification.
On the second sticker, the first line has the following format: “MBxxxx-Variant-yzz”, where “MBxxxx” is the board
reference, “Variant” (optional) identifies the mounting variant when several exist, "y" is the PCB revision and "zz"
is the assembly revision, for example B01. The second line shows the board serial number used for traceability.
Evaluation tools marked as “ES” or “E” are not yet qualified and therefore not ready to be used as reference
design or in production. Any consequences deriving from such usage will not be at ST charge. In no event, ST will
be liable for any customer usage of these engineering sample tools as reference designs or in production.
“E” or “ES” marking examples of location:
•
On the targeted STM32 that is soldered on the board (For an illustration of STM32 marking, refer to the
STM32 datasheet “Package information” paragraph at the www.st.com website).
•
Next to the evaluation tool ordering part number that is stuck or silk-screen printed on the board.
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.
9.2
9.2.1
NUCLEO-G431RB product history
Product identification NUG431RB$AT1
This product identification is based on the mother board MB1367-G431RB-C04.
It embeds the STM32G431RBT6 microcontroller with silicon revision code "Z". The limitations of this silicon
revision are detailed in errata sheet STM32G431xx/441xx device errata (ES0431).
Product limitations
No limitation identified for this product identification.
9.2.2
Product identification NUG431RB$AT2
This product identification is based on the mother board MB1367-G431RB-C04.
It embeds the STM32G431RBT6 microcontroller with silicon revision code "Y". The limitations of this silicon
revision are detailed in errata sheet STM32G431xx/441xx device errata (ES0431).
Product limitations
No limitation identified for this product identification.
9.2.3
Product identification NUG431RB$AT3
This product identification is based on the mother board MB1367-G431RB-C04.
It embeds the STM32G431RBT6 microcontroller with silicon revision code "X". The limitations of this silicon
revision are detailed in errata sheet STM32G431xx/441xx device errata (ES0431).
Product limitations
No limitation identified for this product identification.
UM2505 - Rev 4
page 35/44
UM2505
NUCLEO-G474RE product history
9.3
9.3.1
NUCLEO-G474RE product history
Product identification NUG474RE$AT1
This product identification is based on the mother board MB1367-G474RE-C04.
It embeds the STM32G474RET6 microcontroller with silicon revision code "Z". The limitations of this silicon
revision are detailed in errata sheet STM32G471xx/473xx/474xx/483xx/484xx device errata (ES0430).
9.3.1.1
NUG474RE$AT1 known limitations
Issue observed
The OPAMP offset value is minimized using a trimming circuitry. At startup, the trimming values are initialized with
the preset factory trimming values. The trimming values of OPAMP1, OPAMP2 and OPAMP4 are not programmed
correctly, resulting in a large offset compared to the one specified.
Proposed workaround
The offset values of OPAMP1, OPAMP2 and OPAMP4 must be calibrated by software, applying the calibration
procedure described in the STM32G4 Series advanced Arm®-based 32-bit MCUs reference manual (RM0440), in
the Calibration section of the Operational amplifiers (OPAMP) chapter. Such a procedure is already implemented
in the STM32CubeG4 MCU Package.
Parts impacted
This applies only to the MB1367-based NUCLEO-G474RE boards within the following range of serial numbers:
A191300001-A191304602.
9.3.2
Product identification NUG474RE$AT2
This product identification is based on the mother board MB1367-G474RE-C04.
It embeds the STM32G474RET6 microcontroller with silicon revision code "Y". The limitations of this silicon
revision are detailed in errata sheet STM32G471xx/473xx/474xx/483xx/484xx device errata (ES0430).
Product limitations
No limitation identified for this product identification.
9.3.3
Product identification NUG474RE$AT3
This product identification is based on the mother board MB1367-G474RE-C04.
It embeds the STM32G474RET6 microcontroller with silicon revision code "X". The limitations of this silicon
revision are detailed in errata sheet STM32G471xx/473xx/474xx/483xx/484xx device errata (ES0430).
Product limitations
No limitation identified for this product identification.
9.4
9.4.1
NUCLEO-G491RE product history
Product identification NUG491RE$AT1
This product identification is based on the mother board MB1367-G491RE-C04.
It embeds the STM32G491RET6 microcontroller with silicon revision code "Z". The limitations of this silicon
revision are detailed in errata sheet STM32G491xx/4A1xx device errata (ES0523).
Product limitations
No limitation identified for this product identification.
UM2505 - Rev 4
page 36/44
UM2505
Board revision history
9.5
Board revision history
9.5.1
Board MB1367 revision C-04
The revision C-04 is the initial release of master board MB1367.
Board limitations
No limitation identified for this board revision.
UM2505 - Rev 4
page 37/44
UM2505
Federal Communications Commission (FCC) and ISED Canada Compliance Statements
10
Federal Communications Commission (FCC) and ISED Canada
Compliance Statements
10.1
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 B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception which can be determined by turning the equipment off
and on, the user is encouraged to try to correct interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment into an outlet on circuit different from that to which the receiver is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
Note:
Use only shielded cables.
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
10.2
ISED Compliance Statement
ISED Canada ICES-003 Compliance Label: CAN ICES-3 (B) / NMB-3 (B).
Étiquette de conformité à la NMB-003 d'ISDE Canada: CAN ICES-3 (B) / NMB-3 (B).
UM2505 - Rev 4
page 38/44
UM2505
Revision history
Table 18. Document revision history
Date
Revision
28-Mar-2019
1
Initial release.
17-Apr-2019
2
Added the Limitation section.
3
Extended the document scope to the NUCLEO-G491RE board: updated
sections Introduction, Features, Ordering information and Development
environment.
26-Nov-2020
Changes
Added the STM32G4 Nucleo-64 board information section.
11-Feb-2021
UM2505 - Rev 4
4
Updated the Embedded STLINK-V3E section. Updated the STM32G4
Nucleo-64 product information chapter.
page 39/44
UM2505
Contents
Contents
1
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1
3
Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Development environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2
Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3
Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4
Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
5
Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.1
6
Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hardware layout and configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.1
PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.2
Mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.3
Embedded STLINK-V3E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.4
6.3.1
Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.3.2
STLINK-V3E firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.3.3
Using an external debug tool to program and debug the on-board STM32 . . . . . . . . . . . . 12
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.4.1
6.5
6.6
6.7
7
Debugging while using VIN or EXT as an external power supply . . . . . . . . . . . . . . . . . . . 21
Clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.5.1
HSE clock (high-speed external clock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.5.2
LSE clock (low-speed external clock) – 32.768 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Board functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6.1
LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6.2
Push-buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6.3
MCU voltage selection on VREF+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.6.4
Current consumption measurement (IDD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.6.5
Virtual COM port (VCP): LPUART and USART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Board connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
UM2505 - Rev 4
page 40/44
UM2505
Contents
7.1
STLINK-V3E USB Micro-B connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2
MIPI10 connector CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.3
ARDUINO® Uno V3 connectors CN5, CN6, CN8 and CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.4
ST morpho connectors CN7 and CN10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8
STM32G4 Nucleo-64 I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
9
STM32G4 Nucleo-64 product information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
9.1
Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.2
NUCLEO-G431RB product history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.3
9.4
9.2.1
Product identification NUG431RB$AT1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.2.2
Product identification NUG431RB$AT2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.2.3
Product identification NUG431RB$AT3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
NUCLEO-G474RE product history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.3.1
Product identification NUG474RE$AT1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.3.2
Product identification NUG474RE$AT2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.3.3
Product identification NUG474RE$AT3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
NUCLEO-G491RE product history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.4.1
9.5
Board revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.5.1
10
Product identification NUG491RE$AT1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Board MB1367 revision C-04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Federal Communications Commission (FCC) and ISED Canada Compliance
Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
10.1
FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
10.2
ISED Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
UM2505 - Rev 4
page 41/44
UM2505
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
List of available products. . . . . . . . . . . . . . . . . . . . . . . . .
Codification explanation . . . . . . . . . . . . . . . . . . . . . . . . .
ON/OFF convention . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jumper configuration . . . . . . . . . . . . . . . . . . . . . . . . . . .
MIPI10 / STDC14 debug connector (CN4). . . . . . . . . . . . .
External power sources: VIN (7 V - 12 V) . . . . . . . . . . . . .
External power sources: E5V (5 V). . . . . . . . . . . . . . . . . .
External power sources: 5V_CHGR (5 V) . . . . . . . . . . . . .
External power sources: 3V3 . . . . . . . . . . . . . . . . . . . . . .
USART1 connection. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LPUART1 connection . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solder bridge configuration . . . . . . . . . . . . . . . . . . . . . . .
USB Micro-B connector CN1 pinout . . . . . . . . . . . . . . . . .
MIPI10 connector CN4 pinout (STDC14 pinout compatible) .
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. 3
. 3
. 5
. 6
12
16
18
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23
23
24
27
28
Table 15.
Table 16.
Table 17.
Table 18.
ARDUINO® connectors pinout . . . . . . . . . . .
Pin assignment of the ST morpho connectors
Nucleo-64 I/O assignment. . . . . . . . . . . . . .
Document revision history . . . . . . . . . . . . . .
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29
31
33
39
UM2505 - Rev 4
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page 42/44
UM2505
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
NUCLEO-G474RE top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NUCLEO-G474RE bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Top layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bottom layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STM32G4 Nucleo 64 board mechanical drawing (in millimeter) . . . . . . . . . . . . . .
USB composite device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting an external debug tool to program the on-board STM32G4 . . . . . . . .
STM32G4 Nucleo-64 board power tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power supply input from STLINK-V3E USB connector with PC (5 V, 500 mA max)
Power supply input from VIN (7 V - 12 V, 800 mA max) . . . . . . . . . . . . . . . . . . .
Power supply input from 5V_EXT (5 V, 500 mA max). . . . . . . . . . . . . . . . . . . . .
Power supply input from ST-LINK USB connector with USB charger (5 V) . . . . . .
Power supply input from external 3V3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB Micro-B connector CN1 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MIPI10 connector CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 17.
ARDUINO® connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 18.
Figure 19.
ARDUINO® and ST morpho connectors pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
ST morpho connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
UM2505 - Rev 4
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. 1
. 1
. 7
. 8
. 9
10
11
12
14
15
17
18
19
20
27
27
page 43/44
UM2505
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
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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2021 STMicroelectronics – All rights reserved
UM2505 - Rev 4
page 44/44
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