ST STM32F4DISCOVERY User manual

October 2020 UM1472 Rev 7 1/32
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UM1472
User manual
Discovery kit with STM32F407VG MCU
Introduction
The STM32F4DISCOVERY Discovery kit allows users to easily develop applications with
the STM32F407VG high-performance microcontroller with the Arm®Cortex®-M4 32-bit
core. It includes everything required either for beginners or experienced users to get started
quickly.
Based on STM32F407VG, it includes an ST-LINK/V2-A embedded debug tool, one ST-
MEMS digital accelerometer, one digital microphone, one audio DAC with integrated class D
speaker driver, LEDs, push-buttons and a USB OTG Micro-AB connector. Specialized add-
on boards can be connected by means of the extension header connectors. The
STM32F4DISCOVERY Discovery kit comes with the STM32 comprehensive free software
libraries and examples available with the STM32CubeF4 MCU Package.
Figure 1. STM32F4DISCOVERY
Picture is not contractual.
www.st.com

Contents UM1472
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Contents
1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Development environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Hardware and layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 Embedded ST-LINK/V2-A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.1.1 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1.2 ST-LINK/V2-A firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1.3 ST-LINK/V2-A VCP configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1.4 Using ST-LINK/V2-A to program/debug the STM32F407VG on board . 16
6.1.5 Using ST-LINK/V2-A to program/debug an external STM32 application 17
6.2 Power supply and power selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.3 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.4 Push buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.5 On-board audio capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.6 USB OTG supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.7 Motion sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.8 JP1 (Idd) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.9 OSC clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.9.1 OSC clock supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.9.2 OSC 32 KHz clock supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.10 Solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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6.11 Extension connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7 Mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 STM32F4DISCOVERY Discovery kit information . . . . . . . . . . . . . . . . . 29
8.1 Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2 Board revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2.1 MB997 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Appendix A Federal Communications Commission (FCC) and ISED Canada
Compliance Statements30
A.1 FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
A.1.1 Part 15.19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
A.1.2 Part 15.21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
A.1.3 Part 15.105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
A.2 ISED Compliance Statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

List of tables UM1472
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List of tables
Table 1. Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. Codification explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. ON/OFF conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4. Jumper states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 5. Debug connector CN2 (SWD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 6. Solder bridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 7. STM32 pin description versus board functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 8. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

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UM1472 List of figures
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List of figures
Figure 1. STM32F4DISCOVERY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 3. STM32F4DISCOVERY top layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 4. STM32F4DISCOVERY bottom layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5. USB composite device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 6. ST-LINK VCP connection to USART2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 7. STM32F4DISCOVERY connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8. ST-LINK connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 9. STM32F4DISCOVERY mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Features UM1472
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1 Features
The STM32F4DISCOVERY offers the following features:
•STM32F407VGT6 microcontroller featuring 32-bit Arm®(a) Cortex®-M4 with FPU core,
1-Mbyte Flash memory, 192-Kbyte RAM in an LQFP100 package
•USB OTG FS
•ST MEMS 3-axis accelerometer
•ST-MEMS audio sensor omni-directional digital microphone
•Audio DAC with integrated class D speaker driver
•User and reset push-buttons
•Eight LEDs:
– LD1 (red/green) for USB communication
– LD2 (red) for 3.3 V power on
– Four user LEDs, LD3 (orange), LD4 (green), LD5 (red) and LD6 (blue)
– Two USB OTG LEDs, LD7 (green) VBUS and LD8 (red) over-current
•Board connectors:
– USB with Micro-AB
– Stereo headphone output jack
– 2.54 mm pitch extension header for all LQFP100 I/Os for quick connection to
prototyping board and easy probing
•Flexible power-supply options: ST-LINK, USB VBUS, or external sources
•External application power supply: 3 V and 5 V
•Comprehensive free software including a variety of examples, part of STM32CubeF4
MCU Package, or STSW-STM32068 for using legacy standard libraries
•On-board ST-LINK/V2-A debugger/programmer with USB re-enumeration capability:
mass storage, Virtual COM port, and debug port
•Support of a wide choice of Integrated Development Environments (IDEs) including IAR
Embedded Workbench®, MDK-ARM, and STM32CubeIDE
a. Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and or elsewhere.

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UM1472 Ordering information
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2 Ordering information
To order the Discovery kit for the STM32F407 product line of microcontrollers, refer to
Table 1. Additional information is available from the datasheet and reference manual of the
target microcontroller.
2.1 Codification
The meaning of the codification is explained in Table 2.
Table 1. Ordering information
Order code Board reference Target STM32
STM32F407G-DISC1(1)
1. STM32F407G-DISC1 with ST-LINK/V2-A replaces the obsolete STM32F4DISCOVERY order code with
ST-LINK/V2.
MB997 STM32F407VGT6
Table 2. Codification explanation
STM32F4XXY-DISC1 Description Example: STM32F407G-DISC1
STM32F4 MCU series in STM32 32-bit Arm Cortex
MCUs STM32F4 Series
XX MCU product line in the series STM32F407
YSTM32 Flash memory size:
– G for 1 Mbyte 1 Mbyte
DISC1 Discovery kit Discovery kit

Development environment UM1472
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3 Development environment
3.1 System requirements
•Windows®OS (7, 8 and 10), Linux®64-bit, or macOS® (a)
•USB Type-A or USB Type-C®to Mini-B cable
3.2 Development toolchains
•IAR Systems - IAR Embedded Workbench® (b)
•Keil®- MDK-ARM(b)
•STMicroelectronics - STM32CubeIDE
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.
4 Conventions
Table 3 provides the definition of some conventions used in the present document.
a. 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.
b. On Windows®only.
Table 3. ON/OFF conventions
Convention Definition
Jumper JP1 ON Jumper fitted
Jumper JP1 OFF Jumper not fitted
Solder bridge SBx ON SBx connections closed by solder
Solder bridge SBx OFF SBx connections left open

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5 Quick start
The STM32F4DISCOVERY is a low-cost and easy-to-use development kit to quickly
evaluate and start a development with an STM32F407VGT6 high-performance
microcontroller.
Before installing and using the product, accept the Evaluation Product License Agreement
from the www.st.com/stm32f4-discovery webpage.
For more information on the STM32F4DISCOVERY and for demonstration software, visit
the www.st.com/stm32f4-discovery webpage.
5.1 Getting started
Follow the sequence below to configure the STM32F4DISCOVERY board and launch the
DISCOVER application:
1. Check the jumpers positions on the board: JP1 ON, CN3 ON (DISCOVERY selected).
2. Connect the STM32F4DISCOVERY board to a PC with a USB cable ‘Type-A to Mini-B’
through USB connector CN1 to power the board. Red LED LD2 (PWR) then lights up.
3. Four LEDs between buttons B1 and B2 are blinking.
4. Press user button B1 to enable the ST MEMS sensor, move the board and observe the
four LEDs blinking according to the motion direction and speed. (If a second USB cable
‘Type-A to Micro-B’ is connected between the PC and CN5 connector, then the board is
recognized as a standard mouse and its motion will also control the PC cursor).
5. To study or modify the DISCOVER project related to this demonstration, visit the
www.st.com/stm32f4-discovery webpage and follow the tutorial.
6. Discover the STM32F407VG features, download and execute programs proposed in
the list of projects.
7. Develop the application using available examples.

Hardware and layout UM1472
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6 Hardware and layout
The STM32F4DISCOVERY is designed around the STM32F407VGT6 microcontroller in a
100-pin LQFP package.
Figure 2 illustrates the connections between the STM32F407VGT6 and its peripherals (ST-
LINK/V2-A, push buttons, LEDs, audio DAC, USB, ST-MEMS accelerometer and
microphone, and connectors).
Figure 3 and Figure 4 help users to locate these features on the STM32F4DISCOVERY
board.
Figure 2. Hardware block diagram
MSv30007V3
Audio DAC
B1
USER
I/O
Mini
USB
LD3 to LD8
B2
RST
RESET
I/OI/O
Header SWD
Motion sensor
Embedded
ST-LINK/V2-A
STM32F407VGT6
Micro-USB
Audio sensor
LEDs
Mini-Jack
Header