ST STM32G0 Manual de usuario
Introduction
The STM32G0 Nucleo-32 board based on the MB1455 reference board (NUCLEO-G031K8) provides an affordable and flexible
way for users to try out new concepts and build prototypes by choosing from the various combinations of performance and
power consumption features, provided by the STM32G0 microcontroller.
The Arduino™ Nano V3 connectivity support allows the easy expansion of the functionality of the STM32 Nucleo open
development platform with a wide choice of specialized shields.
The STM32G0 Nucleo-32 board does not require any separate probe as it integrates the ST-LINK/V2-1 debugger/programmer.
The STM32G0 Nucleo-32 board comes with the STM32 comprehensive free software libraries and examples available with the
STM32CubeG0 MCU Package.
Figure 1. NUCLEO-G031K8 top view Figure 2. NUCLEO-G031K8 bottom view
Pictures are not contractual.
STM32G0 Nucleo-32 board (MB1455)
UM2591
User manual
UM2591 - Rev 1 - June 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
1Features
•STM32G031K8T6U microcontroller (Arm® Cortex®-M0+ at 64 MHz) in LQFP32 package, featuring
64 Kbytes of Flash memory and 8 Kbytes of SRAM
• 1 user LED
• 1 RESET or user push-button
• Board connectors:
– Arduino™ Nano V3 expansion connector
– USB with Micro-B
• Flexible power-supply options: ST-LINK USB VBUS or external sources
• On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage, Virtual
COM port, and debug port
• Comprehensive free software libraries and examples available with the STM32CubeG0 MCU Package
•Support of a wide choice of Integrated Development Environments (IDEs) including IAR™, Keil®, GCC-
based IDEs
Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
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Features
UM2591 - Rev 1 page 2/26
2Ordering information
To order the STM32G0 Nucleo-32 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 Reference board Target STM32
NUCLEO-G031K8 MB1455 STM32G031K8T6U
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.
This board features a specific STM32 device version, which allows the operation of any bundled commercial
stack/library available. This STM32 device shows a "U" marking option at the end of the standard part number
and is not available for sales.
In order to use the same commercial stack in his application, a developer may need to purchase a part number
specific to this stack/library. The price of those part numbers includes the stack/library royalties.
2.2 Products and codification
The meaning of the codification is explained in Table 2.
Table 2. Codification explanation
NUCLEO-XXYYKT Description Example: NUCLEO-G031K8
XX MCU series in STM32 Arm Cortex MCUs STM32G0 Series
YY MCU product line in the series STM32G031
K STM32 package pin count 32 pins
TSTM32 Flash memory size:
• 8 for 64 Kbytes 64 Kbytes
The order code is mentioned on a sticker placed on the top side of the board.
UM2591
Ordering information
UM2591 - Rev 1 page 3/26
3Development environment
3.1 System requirements
• Windows® OS (7, 8 and 10), Linux® 64-bit, or macOS®
• USB Type-A to Micro-B cable
Note: macOS® is a trademark of Apple Inc. registered in the U.S. and other countries.
3.2 Development toolchains
• Keil® free 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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Development environment
UM2591 - Rev 1 page 4/26
4Conventions
Table 3 provides the conventions used for the ON and OFF settings in the present document.
Table 3. ON/OFF convention
Convention Definition
Jumper JPx ON Jumper fitted
Jumper JPx OFF Jumper not fitted
Jumper JPx [1-2] Jumper should be fitted between Pin 1 and Pin 2
Solder bridge SBx ON SBx connections closed by 0 Ω resistor
Solder bridge SBx OFF SBx connections left open
Resistor Rx ON Resistor soldered
Resistor Rx OFF Resistor not soldered
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Conventions
UM2591 - Rev 1 page 5/26
5Quick start
The STM32G0 Nucleo-32 board is a low-cost and easy-to-use development kit, used to evaluate and start a
development quickly with an STM32G0 Series microcontroller in LFQFP 32-pin 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 STM32G0 Nucleo-32 and for demonstration software, visit the www.st.com/stm32nucleo
webpage.
5.1 Getting started
Follow the sequence below to configure the STM32G0 Nucleo-32 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 ST-LINK/V2-1 USB driver available on the www.st.com website
3. To power the board, connect the STM32G0 Nucleo-32 board to a PC with a USB cable (Type-A to Micro-B)
through the USB connector CN1 of the board
4. Then, red LED LD1 (COM) and green LED LD2 (5V_PWR) light up, green LED LD3 blinks
5. Remove the jumper placed between D2 (CN3 pin 5) and GND (CN3 pin 4)
6. Observe how the blinking of the green LED LD3 changes, when the jumper is in place or removed
7. Download the demonstration software and several software examples that help to use the STM32 Nucleo
features. These are available on the NUCLEO-G031K8 webpage
8. Develop your own application using the available examples
Table 4. Jumper configuration
Jumper Definition Position(1) Comment(1)
JP1 IDD ON For STM32G0 current measurement
1. Default jumper state is shown in bold.
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Quick start
UM2591 - Rev 1 page 6/26
6Hardware layout and configuration
The STM32G0 Nucleo-32 board is designed around an STM32G031 microcontroller in an LFQFP 32-pin
package. Figure 3 shows the connections between the STM32 and its peripherals (ST-LINK/V2-1, push-button,
LEDs, USB, and Arduino™ Nano). Figure 4. Top layout and Figure 5. Bottom layout show the location of these
features on the STM32G0 Nucleo-32 board. The mechanical dimensions of the board are shown in Figure 6.
Figure 3. Hardware block diagram
Embedded
ST-LINK/V2-1
STM32
microcontroller
RESET
Micro
USB
I/O I/O
B1
RST
Arduino™ Nano
connector
LED
LD3
Nucleo-32 board
Arduino™ Nano
connector
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Hardware layout and configuration
UM2591 - Rev 1 page 7/26
6.1 PCB layout
Figure 4. Top layout
LD1
red/green LED (COM)
LD3
green LED (USER)
CN1 ST-LINK/V2-1
Micro-B USB connector
LD2
red LED (PWR)
SB2
ST-LINK reset
B1
RESET or user push-button
U2
STM32G031K8T6U microcontroller
LD4
red LED (OC)
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PCB layout
UM2591 - Rev 1 page 8/26
Figure 5. Bottom layout
JP1
IDD measurement
CN4
Arduino™ Nano connector
CN3
Arduino™ Nano connector
U7
ST-LINK/V2-1 microcontroller
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PCB layout
UM2591 - Rev 1 page 9/26
6.2 Mechanical drawing
Figure 6. STM32G0 Nucleo-32 board mechanical drawing (in millimeter)
6.3 Embedded ST-LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated in the STM32G0 Nucleo-32 board.
For detailed information about the debugging and programming features of ST-LINK/V2-1, refer to the ST-LINK/V2
in-circuit debugger/programmer for STM8 and STM32 user manual (UM1075) and Overview of ST-LINK
derivatives technical note (TN1235).
Features supported by the ST-LINK/V2-1:
• USB software re-enumeration
• Virtual COM port interface on USB
• Mass storage interface on USB
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Mechanical drawing
UM2591 - Rev 1 page 10/26
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