ST UM2140 User manual

December 2021 UM2140 Rev 3 1/48
1
UM2140
User manual
Discovery kit with STM32F723IE MCU
Introduction
With the STM32F723 Discovery kit (32F723EDISCOVERY), users develop applications
easily on the STM32F7 Series high-performance microcontrollers based on Arm®
Cortex®-M7 core. The Discovery kit combines the STM32F723 features with 240x240 pixel
LCD with touch panel, SAI audio codec, MEMS microphones, USBs OTG HS and OTG FS,
Quad-SPI NOR Flash memory, and microSD™card connector.
An embedded ST-LINK/V2-1 debugger/programmer is included. Specialized add-on boards
can be connected through the ARDUINO®Uno V3, Pmod™, or STMod+ expansion
connectors.
Pictures are not contractual.
Figure 1. 32F723EDISCOVERY (Top view) Figure 2. 32F723EDISCOVERY (Bottom view)
www.st.com

Contents UM2140
2/48 UM2140 Rev 3
Contents
1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Development environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1 32F723EDISCOVERY Discovery kit layout . . . . . . . . . . . . . . . . . . . . . . . .11
5.2 32F723EDISCOVERY Discovery kit mechanical drawing . . . . . . . . . . . . 13
5.3 Embedded ST-LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3.1 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3.2 ST-LINK/V2-1 firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4.1 Supplying the board through the ST-LINK USB port (default setting) . . 15
5.4.2 Supplying the board through a charger connected to ST-LINK . . . . . . . 16
5.4.3 Supplying the board from E5V (On CN3 or CN12 connector) . . . . . . . . 17
5.4.4 Supplying the board from an external power supply through USB HS . 18
5.4.5 Supplying the board from an external power supply through USB FS . 18
5.5 Programming/debugging when the power supply is not from
ST-LINK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.6 Clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.7 Reset sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.8 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.9 USB OTG HS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.10 USB OTG FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.11 PSRAM memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.12 Quad-SPI NOR Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.13 Virtual COM port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

UM2140 Rev 3 3/48
UM2140 Contents
4
5.14 TFT LCD 240x240 pixels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.15 Capacitive control touch panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.16 Buttons and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.1 Wi-Fi® ESP-01 compatible connector . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 ARDUINO®Uno V3 compatible connectors . . . . . . . . . . . . . . . . . . . . . . . 23
6.3 P2 Pmod™and P1 STMod+ connectors . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.3.1 P2 Pmod™connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3.2 P1 STMod+ connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.4 CN9 TAG connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.5 CN19 USB OTG HS Micro-AB connector . . . . . . . . . . . . . . . . . . . . . . . . 28
6.6 CN18 USB OTG FS Micro-AB connector . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.7 LCD connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.8 Control Touch Panel (CTP) connector . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.9 CN1 ST-LINK/V2-1 USB Micro-B connector . . . . . . . . . . . . . . . . . . . . . . 31
6.10 Audio stereo speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.11 Audio line connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.11.1 Audio line output (green jack) connector . . . . . . . . . . . . . . . . . . . . . . . . 32
6.11.2 Audio line input (blue jack) connector . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7 32F723EDISCOVERY board information . . . . . . . . . . . . . . . . . . . . . . . . 33
7.1 Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.2 32F723EDISCOVERY product history . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.2.1 Product identification 32F723EDISCO/ . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.2.2 Product identification DK32F723E$AU1 . . . . . . . . . . . . . . . . . . . . . . . . 33
7.3 Board revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3.1 Board MB1260 revision D-01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3.2 Board MB1260 revision D-03 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3.3 Board MB1280 revision A-03 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3.4 Board MB1280 revision B-01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3.5 Board MB1280 revision C-01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Appendix A 32F723EDISCOVERY Discovery board I/O assignment . . . . . . . . . 35
Appendix B Pmod™ and STMod+ schematic table. . . . . . . . . . . . . . . . . . . . . . . 40

Contents UM2140
4/48 UM2140 Rev 3
Appendix C Fanout board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
C.1 MikroElektronika mikroBUS™ compatible connector
(Fanout CN10 and CN11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
C.2 ESP-01 Wi-Fi®board compatible connector. . . . . . . . . . . . . . . . . . . . . . . 43
C.3 Compatible connectors for the Grove boards . . . . . . . . . . . . . . . . . . . . . . 44
C.3.1 Compatible connector for I2C Grove boards (Fanout CN3) . . . . . . . . . . 44
C.3.2 Compatible connector for UART Grove boards (Fanout CN2) . . . . . . . . 44
Appendix D Federal Communications Commission (FCC)
and Industry Canada (IC) Compliance Statements. . . . . . . . . . . . . 45
D.1 FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
D.1.1 Part 15.19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
D.1.2 Part 15.105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
D.1.3 Part 15.21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
D.2 IC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
D.2.1 Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
D.3 Déclaration de conformité . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Appendix E CISPR32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
E.1 Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

UM2140 Rev 3 5/48
UM2140 List of tables
5
List of tables
Table 1. Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. Codification explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 3. ON/OFF conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4. 32F723EDISCOVERY board power configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 5. Control port assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 6. CN14 Wi-Fi®module connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 7. GPIO assignment for ARDUINO®pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 8. GPIO assignment for Pmod™ pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 9. Pmod™: SPI or UART configuration selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 10. GPIO assignment for STMod+ pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 11. STMod+: SPI/UART configuration selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 12. CN19 USB OTG HS Micro-AB connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 13. CN18 USB OTG FS Micro-AB connector (Front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 14. Pin description of the CN17 LCD connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 15. Pin description of the CN16 CTP connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 16. CN1 USB Micro-B connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 17. CN5 audio line output connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 18. CN4 audio line input connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 19. I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 20. STMod+ connector signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 21. Description of the mikroBUS™ connector pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 22. Description of the ESP-01 Wi-Fi®board connector pins . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 23. Description of the I2C Grove board connector pins (CN3) . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 24. Description of the UART Grove board connector pins (CN2) . . . . . . . . . . . . . . . . . . . . . . . 44
Table 25. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

List of figures UM2140
6/48 UM2140 Rev 3
List of figures
Figure 1. 32F723EDISCOVERY (Top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. 32F723EDISCOVERY (Bottom view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 3. Hardware block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. 32F723EDISCOVERY top layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 5. 32F723EDISCOVERY bottom layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. 32F723EDISCOVERY mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. USB composite device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 8. CN8 ST-LINK connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9. CN8 USB_STLINK connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 10. CN8 external 5 V supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 11. CN8 external USB_HS supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 12. CN8 external USB_FS supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 13. CN14 Wi-Fi®connector (Front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 14. P2 Pmod™connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 15. P1 STMod+ connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 16. CN9 TAG connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 17. CN19 USB OTG HS Micro-AB connector (Front view). . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 18. CN18 USB OTG FS Micro-AB connector (Front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 19. CN17 LCD connector (Front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 20. CN16 CTP connector (Front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 21. CN1 USB Micro-B connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 22. Mechanical drawing of the audio line connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 23. STMod+ Fanout module plugged into the P1 connector . . . . . . . . . . . . . . . . . . . . . . . . . . 42

UM2140 Rev 3 7/48
UM2140 Features
47
1 Features
•STM32F723IEK6 microcontroller with 512 Kbytes of Flash memory and 176+16 Kbytes
of SRAM, in a BGA176 package
•240x240-pixel TFT LCD with a parallel interface and capacitive touch panel
•USB OTG HS and OTG FS
•SAI audio codec
•Four digital ST-MEMS microphones
•8-Mbit 16-bit wide PSRAM
•512-Mbit Quad-SPI NOR Flash memory
•User and reset push-buttons
•Board connectors:
–ESP-01Wi.Fi
®module connector
– Two user USB with Micro-AB
– Jack for audio line with stereo input and output
– Stereo speaker output
–Pmod
™connector
– STMod+ connector to embedded fanout daughterboard compatible with
MikroElektronika mikroBUS™adapter Click boards™, ESP-01, and Seeed
Studio™Grove modules. Provision for headers for direct breadboard plug-in
– ARDUINO®Uno V3 expansion connectors
– 3.3 or 5.0 V power supply output for external applications
•Flexible power-supply options: ST-LINK USB VBUS, user USB HS and FS connectors,
or external sources
•Comprehensive free software libraries and examples available with the STM32Cube
MCU Package
•On-board ST-LINK/V2-1 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
2 Ordering information
To order the 32F723EDISCOVERY Discovery kit, refer to Ta bl e 1. Additional information is available
from the datasheet and reference manual of the target microcontroller.
Table 1. Ordering Information
Order code Board reference Target STM32
STM32F723E-DISCO MB1260(1)
MB1280(2)
1. Mother board
2. Fanout daughterboard
STM32F723IEK6

Ordering information UM2140
8/48 UM2140 Rev 3
2.1 Codification
The meaning of the codification is explained in Table 2.
Table 2. Codification explanation
STM32F7XXY-DISCO Description Example:
STM32F723E-DISCO
STM32F7 MCU series in
STM32 32-bit Arm Cortex MCUs SRM32F7 Series
XX MCU product line in the series STM32F723
YSTM32 Flash memory size:
E for 512 Kbytes 512 Kbytes
DISCO Discovery kit Discovery kit

UM2140 Rev 3 9/48
UM2140 Development environment
47
3 Development environment
The 32F723EDISCOVERY Discovery kit runs with the STM32F413ZHT6 32-bit
microcontroller based on the Arm®(a) Cortex®-M7 core.
3.1 System requirements
•Multi-OS support: Windows®10, Linux®(b) 64-bit, or macOS®(c)(d)
•USB Type-A or USB Type-C®to Micro-B cable
3.2 Development toolchains
•IAR Systems®- IAR Embedded Workbench®(e)
•Keil®- MDK-ARM(e)
•STMicroelectronics - STM32CubeIDE
4 Conventions
Table 3 defines some conventions used in the present document.
a. Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
b. Linux is a registered trademark of Linus Torvalds.
c. macOS is a trademark of Apple Inc. registered in the U.S. and other countries.
d. All other trademarks are the property of their respective owners.
e. On Windows®only.
Table 3. ON/OFF conventions
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 solder
Solder bridge SBx OFF SBx connections left open
Resistor Rx ON Resistor soldered
Resistor Rx OFF Resistor not soldered

Hardware layout and configuration UM2140
10/48 UM2140 Rev 3
5 Hardware layout and configuration
The 32F723EDISCOVERY Discovery kit is designed around the STM32F723IEK6 (176-pin
in UFBGA package). The hardware block diagram shown in Figure 3 illustrates the
connection between STM32F723IEK6 and peripherals (PSRAM, Quad-SPI Flash memory,
LCD connector, USB OTG HS and FS connectors, USART, Audio, ARDUINO®Uno V3,
Pmod™and STMod+ shields, and embedded ST-LINK). Figure 4 and Figure 5 help users to
locate these features on the 32F723EDISCOVERY board. The mechanical dimensions of
the 32F723EDISCOVERY board are shown in Figure 6.
Figure 3. Hardware block diagram
1. Dotted lines identify the shared signals.
MSv44313V2
3.3 V power supply
LEDs, push-buttons,
and wake-up circuitry
USB Micro-AB connector
USB Micro-AB connector
Wi-Fi
®
module connector
GPIOs
OTG HS
OTG FS
UART
VCP UART
SWD
GPIOs
GPIOs
I
2
C
GPIOs
GPIOs
FMC
address
FMC data
GPIOs
HSI
RTC
I
2
C
SAI
QSPI
Audio codec
Pmod™ module
connector
STMod+ module
connector
ARDUINO
®
Uno V3
shield connectors
PSRAM
240x240 LCD
Capacitive touch panel I
2
C
25 MHz oscillator
32 kHz crystal Quad-SPI Flash memory
Line-out
stereo jack
Line-in
stereo jack
Right speaker
connector
Left speaker
connector
ST-LINK/V2-1 USB Micro-B
connector
STM32F723IEK6
F
MC
add
r
ess
FM
C
data
FMC
PDM
microphones