Introduction
UM2514
User manual
Evaluation board with STM32G4xxQE MCU
The STM32G474E-EVAL board is a complete demonstration and development platform for
the STMicroelectronics Arm
It features three FDCAN controllers, four I²C Fast mode plus, five USART/UARTs and one
LPUART, four SPIs, one SAI port, USB FS and IRTIM communication interfaces, UCPD,
five 12-bit ADCs, seven 12-bit DAC channels, seven comparators and six operational
amplifiers, 17 timers, 96
Flash memory, and JTAG/SWD debugging support.
The STM32G474E-EVAL, shown in Figure 1 and Figure 2, is used as a reference design for
user application development before porting to the final product. The STM32G484E-EVAL is
populated with an STM32G484QET6U MCU with Cryptography. The STM32G474E-EVAL1
is configured as a dedicated motor-control board.
The full range of hardware features available on the board helps users to optimize the
application development by the evaluation of all the peripherals (USB FS, UCPD, USART,
audio, ADC and DAC, differential ADC, TFT LCD, potentiometer/LDR, SRAM, Quad-SPI
Flash memory device, microSD™ card, Smartcard, FDCAN transceiver, high brightness
LED, motor control connectors, temperature sensor, and others). Extension headers provide
easy connection to daughterboard for specific applications.
STLINK-V3E is integrated into the board, as the embedded in-circuit debugger and
programmer for the STM32 MCU and the USB virtual COM port bridge.
The three products (STM32G474E-EVAL, STM32G484E-EVAL, STM32G474E-EVAL1) are
described in this user manual, together with STM32G474E-EVAL figures.
Figure 1. STM32G474E-EVAL top view Figure 2. STM32G474E-EVAL bottom view
®
Cortex®-M4 core-based STM32G474QET6U microcontroller.
Kbytes of internal SRAM, 32 Kbytes of CCM SRAM, 512 Kbytes of
Pictures are not contractual.
September 2019 UM2514 Rev 4 1/83
www.st.com
1
Contents UM2514
Contents
1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3 Development environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Delivery recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 STLINK-V3E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.1 Drivers and firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 ETM trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.3.1 Supplying the board through STLINK-V3E USB port . . . . . . . . . . . . . . 20
5.3.2 Using STLINK-V3E along with powering through CN25 power jack . . . 20
5.4 Clock references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.5 Reset source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.6 Boot Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.6.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.7 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.7.1 Limitations in using audio features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.8 USB FS port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.8.1 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.9 RS232 and RS485 port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.9.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.9.2 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.10 microSD card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.10.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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5.10.2 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.11 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.11.1 Board modifications to enable motor control . . . . . . . . . . . . . . . . . . . . . 32
5.11.2 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.12 FDCAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.12.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.12.2 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.13 Extension connectors CN5 and CN6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.14 User LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.15 Physical input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.15.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.16 Operational amplifier and comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.16.1 Operational amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.16.2 Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.16.3 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.17 Analog input, output, VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.17.1 Analog input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.17.2 Analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.17.3 VREF+ terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.17.4 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.18 SRAM device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.18.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.18.2 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.19 EXT_I2C connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.20 Quad-SPI Flash memory device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.20.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.20.2 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.21 MFX MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.21.1 MFX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.21.2 IDD measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.21.3 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.22 TFT LCD panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.23 UCPD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.23.1 USB Type-C receptacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.23.2 Power Delivery & Local power management . . . . . . . . . . . . . . . . . . . . . 41
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Contents UM2514
5.23.3 VBUS management and discharge mechanism . . . . . . . . . . . . . . . . . . 41
5.23.4 VBUS voltage-sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.23.5 CC management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.23.6 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.24 Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.24.1 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.25 Smartcard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.25.1 Operating voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.26 High brightness LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.26.1 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1 External I2C connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.2 Motor control connector CN2 and CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.3 SMB connector CN3, CN7 and CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.4 Extension connectors CN5 and CN6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.5 DAC connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.6 CAN1 and CAN2 connector CN12 and CN10 . . . . . . . . . . . . . . . . . . . . . 47
6.7 RS232 and RS485 connector CN11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.8 JTAG connector CN14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.9 TAG connector CN15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.10 STDC14 connector CN16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.11 Trace debugging connector CN17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.12 MFX programming connector CN18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.13 Type-C signals connector CN19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.14 LCD connector CN20 and CN24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.15 ST-LINK-V3E USB Micro-B connector CN21 . . . . . . . . . . . . . . . . . . . . . . 51
6.16 USB Type-C connector CN22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.17 Audio blue jack (Line In) CN23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.18 Audio green jack (Line Out) CN26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.19 Power connector CN25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.20 ST-LINK-V3E programming connector CN27 . . . . . . . . . . . . . . . . . . . . . . 53
6.21 microSD connector CN28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.22 Smartcard connector CN31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
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7 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Appendix A STM32G474E-EVAL I/O Assignment . . . . . . . . . . . . . . . . . . . . . . . . 77
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
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List of tables UM2514
List of tables
Table 1. List of available products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 2. Codification explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 3. Setting of configuration elements for trace connector CN17 . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4. Setting of configuration I/Os for PE2, PE3, PE4 and PE5 . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 5. Power supply related jumper and solder bridge settings . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 6. X3 crystal related solder bridge settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 7. X2 crystal related solder bridge settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 8. Boot selection switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 9. Configuration PA10 of STM32G474QET6U terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 10. Motor control CN2 terminal and function assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 11. Motor control CN4 terminal and function assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 12. Motor control OpAmp and DAC function assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 13. Motor control related switches and solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 14. Motor control related switches and solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 15. Port assignment for control of physical input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 16. Configuration elements related with OpAmp4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 17. Configuration elements related with Comp4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 18. Configuration elements related with VREF+. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 19. MFX signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 20. IDD measurement related jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 21. TFT LCD connector CN20 and CN24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 22. Dead battery related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 23. Connection between ST8024L and STM32F091VCT6 . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 24. EXT_I2C connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 25. Motor control connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 26. Motor control connector CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 27. SMB connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 28. Analog input-output connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 29. CAN connector CN10 or CN12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 30. RS-232/RS-485 D-sub connector CN11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 31. JTAG debugging connector CN14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 32. TAG debugging connector CN15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 33. STDC14 debugging connector CN16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Table 34. Trace debugging connector CN17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Table 35. Type-C signals connector CN19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Table 36. USB Micro-B connector CN21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 37. USB Type C connector CN22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 38. Audio Jack Connector CN26 (on board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 39. MicroSD connector CN28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 40. Smartcard connector CN31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 41. STM32G474E-EVAL I/O Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Table 42. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
6/83 UM2514 Rev 4
UM2514 List of figures
List of figures
Figure 1. STM32G474E-EVAL top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. STM32G474E-EVAL bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 3. Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4. STM32G474E-EVAL Evaluation board layout (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 5. STM32G474E-EVAL Evaluation board layout (bottom view) . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 6. STM32G474E-EVAL Evaluation board mechanical dimensions (top view) . . . . . . . . . . . . 16
Figure 7. PCB top side rework for motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 8. PCB bottom side rework for motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 9. I2C EXT connector CN2 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 10. Motor control connector CN2 and CN4 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 11. SMB connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 12. Analog input-output connector CN9 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 13. CAN connector CN10 or CN12 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 14. RS232 and RS485 connector CN11 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 15. JTAG debugging connector CN14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 16. STDC14 debugging connector CN16 (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 17. Trace debugging connector CN17 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 18. Type-C signals connector CN19 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 19. USB Micro-B connector CN21 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 20. USB Type C connector CN22 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 21. Stereo headset with microphone jack CN26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 22. Power supply connector CN25 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 23. microSD connector CN28 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 24. Smartcard connector CN31 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 25. MB1397_TOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 26. STM32 microcontroller I/Os . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 27. STM32 microcontroller power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Figure 28. USB_PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure 29. USB-TYPEC_CON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 30. FMC memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Figure 31. QSPI memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Figure 32. Audio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 33. LCD and SD card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Figure 34. RS232 and RS485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure 35. FDCAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 36. Analog interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Figure 37. Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Figure 38. Smartcard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Figure 39. Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 40. Extension connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 41. Debug connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 42. Multi function expander. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 43. Power board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Figure 44. STLINK-V3E -SWD Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
UM2514 Rev 4 7/83
7
Features UM2514
1 Features
• Common features
– 240x320 TFT color LCD display module with SPI interface
– 16-Gbyte microSD™ card bundled
– On-board current measurement
– SAI audio codec
– Temperature sensor
– 8-Mbit (512 K x 16-bit) SRAM
– Two 512-Mbit Quad-SPI NOR Flash memories
– Four color user LEDs
– One high brightness LED
– Reset and wake-up / tamper buttons
– 4-direction joystick with selection button
– Light-dependent resistor (LDR)
– Potentiometer
– Access to comparator and operational amplifier
– Board connectors:
-Analog line input jack
-Stereo headset jack
-Two connectors for external speakers
-microSD™ card
-EXT_I2C connector supporting I2C bus
-RS-232 port configurable for communication or MCU flashing
-RS-485 port
-USB Type-C™ port supporting USB FS Device
-Two CAN 2.0A/B-compliant ports
-Connector for DAC output
-JTAG/SWD connector
-ETM trace debug connector
-User interface through USB virtual COM port
-Embedded STLINK-V3E debug and flashing facility
-TAG connector 10-pin footprint
8/83 UM2514 Rev 4
UM2514 Features
-Arm
®(a)
Cortex® 10-pin 1.27 mm-pitch debug connector over STDC14 footprint
-Coin cell battery holder
– Board expansion connectors:
-Two sets of motor control expansion connectors
-Board expansion extension connectors
– Flexible power-supply options:
-ST-LINK USB VBUS, external sources, USB Type-C™ connector, or
daughterboard
– On-board STLINK-V3E debugger/programmer with USB re-enumeration
capability: mass storage, Virtual COM port, and debug port
– Microcontroller supply voltage: fixed 3.3 V or adjustable range from 1.62 V to
3.6 V
– Comprehensive free software libraries and examples available with the
STM32CubeG4 MCU Package
– Support of a wide choice of integrated development environments (IDEs) including
IAR™, Keil
®
, GCC-based IDEs
• Board-specific features
-STM32G474QET6U microcontroller with 512 Kbytes of Flash memory and
96 Kbytes of RAM in LQFP128 package (STM32G474E-EVAL and
STM32G474E-EVAL1)
-STM32G474E-EVAL1 is the board to use for motor control application with solder
bridge and resistor configuration
-STM32G484QET6U with cryptography (STM32G484E-EVAL)
• Fully compatible with all microcontrollers of the STM32G4x1 and STM32G4x3 lines
with “QET6” part number suffix
a. Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
UM2514 Rev 4 9/83
82
Ordering information UM2514
2 Ordering information
To order the STM32G4x4E-EVAL Evaluation board, refer to Tab le 1. Additional information
is available in the datasheet and reference manual of the targeted STM32.
Order code Board reference Target STM32 Differentiating feature
Table 1. List of available products
STM32G474E-EVAL
STM32G474E-EVAL1
STM32G484E-EVAL STM32G484QET6U Cryptography
2.1 Product marking
Evaluation tools marked as “ES” or “E” are not yet qualified and are therefore not ready to
be used as reference design or in production. Any consequences arising from such usage
will not be at STMicroelectronics’ charge. In no event will STMicroelectronics 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 illustration of STM32 marking,
refer to the section Package information in the STM32 datasheet at www.st.com).
• next to the evaluation tool ordering part number, that is stuck or silkscreen 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.
MB1397
STM32G474QET6U
-
Motor-control configuration
board
10/83 UM2514 Rev 4
UM2514 Ordering information
2.2 Codification
The meaning of the codification is explained in Tabl e 2.
STM32XXYYYZ-EVAL(T) Description Example: STM32G484E-EVAL
Table 2. Codification explanation
XX
MCU series in STM32 Arm
Cortex MCUs
STM32G4 Series
MCU product line in the series
YY
– G474: basic security
STM32G484
– G484: cryptography
Z
STM32 Flash memory size,
E for 512 Kbytes
512 Kbytes
Evaluation board configuration:
T
– EVAL: basic
– EVAL1: with motor-control
Basic
configuration board
The order code is mentioned on a sticker placed on the top side of the board.
UM2514 Rev 4 11/83
82
Development environment UM2514
3 Development environment
3.1 System requirements
• Windows® OS (7, 8 and 10), Linux® 64-bit or macOS
• USB Type-A to Micro-B cable
3.2 Development toolchains
• Keil® MDK-ARM
• IAR™ EWARM
• GCC-based IDEs
(b)
(b)
3.3 Demonstration software
The demonstration software, included in the STM32Cube MCU Package corresponding to
the on-board MCU, 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.
®(a)
4 Delivery recommendations
Some verifications are needed before using the board for the first time, to make sure that no
damage occurred during shipment and that no components are unplugged or lost.
When the board is extracted from its plastic bag, check that no component remains in the
bag. The main components to verify are:
1. microSD card which may have been ejected from the connector CN28 (right side of the
board),
2. TFT LCD display MB895 daughterboard which must be in its CN20 and CN24
connectors
For product information related to STM32G4xxQET6U microcontroller, visit the www.st.com
website.
a. macOS® is a trademark of Apple Inc., registered in the U.S. and other countries.
®
b. on Windows
only
12/83 UM2514 Rev 4
UM2514 Hardware layout and configuration
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5 Hardware layout and configuration
The STM32G474E-EVAL board is designed around STM32G474QET6U target
microcontroller in TQFP 128-pin package.
STM32G474QET6U with the peripheral components. Figure 4 and Figure 5 show the
locations of main components on the evaluation board.
Figure 3. Hardware block diagram
Figure 3 illustrates the connections of the
UM2514 Rev 4 13/83
82
Hardware layout and configuration UM2514
CN21
STLINK
-
V3E
USB
CN14
JTAG/SWD
CN23
Audio In
LD8
STLINK
-V3E
COM LED
B1
Joystick
B3
Reset
Button
4 colour
LEDs
CN22
Type
-C
connector
U6
STM32G474QET6U
CN5, CN6
Extension
header
CN16
STDC14
CN11
USART
CN28
MicroSD card
B2
USRE
Button
CN26
Audio out
CN3
DIFF ADC
input
RV2
Potentiometer
LD7
STLINK
-
V3E
Power over
current alarm
CN17
ETM TRACE
CN15
TAG
CN20/CN24
TFT LCD
c
onnector
CN19
Type-C SIG
JP12
5V source
CN2
Motor control
c
onnector 1
CN1
EXT_I2C
c
onnector
CN12
CAN1
CN4
Motor control
connector 2
CN10
CAN2
CN32
DAC2
CN18
MFX
CN27
ST
-LINK
SWD
CN25
Power Jack
CN7
CN8
LD6
5V LED
RV3
VDD ADJ
LD5
HB LED
CN9
DAC
Figure 4. STM32G474E-EVAL Evaluation board layout (top view)
14/83 UM2514 Rev 4
UM2514 Hardware layout and configuration
CN31
Smartc
ard
Figure 5. STM32G474E-EVAL Evaluation board layout (bottom view)
UM2514 Rev 4 15/83
82
Hardware layout and configuration UM2514
Figure 6 provides the mechanical dimensions of the STM32G474E-EVAL board.
Figure 6. STM32G474E-EVAL Evaluation board mechanical dimensions (top view)
16/83 UM2514 Rev 4
UM2514 Hardware layout and configuration
5.1 STLINK-V3E
STLINK-V3E facility for debug and flashing of STM32G474QET6U is integrated on the
STM32G474E-EVAL board. It features:
• Self-powered through a USB connector (Micro-B)
• USB 2.0 high-speed compatible interface
• Direct firmware update support (DFU)
• SWD and serial wire viewer (SWV) communication support
• Drag-and-drop Flash programming
• Two color LEDs: communication, power
The USB connector CN21 can be used to power the STM32G474E-EVAL regardless of the
STLINK-V3E facility used for debugging or programming STM32G474QET6U. This holds
also when the STLINK stand-alone tool is connected to connector CN14 or CN15 or CN16
or CN17 and used for debugging or programming the STM32G474QET6U.
Power supply provides more detail about powering the STM32G474E-EVAL.
Refer to www.st.com for details about STLINK-V3E.
5.1.1 Drivers and firmware upgrade
The STLINK-V3E requires drivers to be installed on Windows, and embeds a firmware
which needs to be updated from time to time in order to benefit from new functionality or
corrections. Refer to the Overview of ST-LINK derivatives technical note (TN1235) for
details.
Section 5.3:
Before connecting the STM32G474E-EVAL to a Windows (7, 8 10) PC via USB, a driver for
STLINK-V3E must be installed. It is available from www.st.com.
5.2 ETM trace
The connector CN17 is available to output trace signals used for debug. By default, the
evaluation board is configured such that, STM32G474QET6U signals PE2, PE3 and PE4
are connected to trace outputs TRACECLK, TRACED0, and TRACED1 of CN17, but these
signals shared with Audio codec, motor control connectors and FMC.
Tabl e 3 shows the setting of configuration elements to shunt PE3 and PE4 MCU ports to
CN17 connector, to use them as debug trace signals.
Tabl e 4 shows the setting of configuration I/Os to shunt PE2, PE3, PE4 and PE5 MCU ports
to use them as the right functions.
R210
R207
Table 3. Setting of configuration elements for trace connector CN17
Element Setting Configuration
open
closed CN17 pin 14 connects to JTAG_TDO.
open
closed CN17 pin 16 connects to JTAG_TRST.
Default setting.
CN17 pin 14 connects to TRACED0.
Default setting.
CN17 pin 16 connects to TRACED1.
UM2514 Rev 4 17/83
82
Hardware layout and configuration UM2514
Table 4. Setting of configuration I/Os for PE2, PE3, PE4 and PE5
Element Setting Configuration
R147
SB111
SB103
R147 in
SB111 open
SB103 open
R147 out
SB111 closed
SB103 open
Default setting.
PE2 connects to TRACECLK.
Default setting.
PE2 connects to SAI_MCLK_A.
R147 out
SB111 open
PE2 connects to MC1|MC2_PFC_Sync.
SB103 closed
R145 in
SB110 open
SB118 open
Default setting.
PE3 connects to TRACED0.
R146 out
R145 out
R145
SB110
SB118
R146
SB110 closed
SB118 open
R146 out
R145 out
SB110 open
SB118 closed
Default setting.
PE3 connects to SAI_SD_B.
PE3 connects to MC1|MC2_PFC_pwm.
R146 out
R145 out
SB110 open
SB118 open
Default setting.
PE3 connects to memory address line A19.
R146 in
R144 in
SB107 open
SB109 open
Default setting.
PE4 connects to TRACED1.
R143 out
R144 out
R144
SB107
SB109
R143
SB107 closed
SB109 open
R143 out
R144 out
SB107 open
SB109 closed
Default setting.
PE4 connects to SAI_FS_A.
PE4 connects to MC1_ICL_SHUTOUT.
R143 out
R144 out
SB107 open
SB109 open
Default setting.
PE4 connects to memory address line A20.
R143 in
18/83 UM2514 Rev 4
UM2514 Hardware layout and configuration
Table 4. Setting of configuration I/Os for PE2, PE3, PE4 and PE5 (continued)
Element Setting Configuration
SB28 closed
SB28
SB97
SB97 open
SB28 open
SB97 closed
Warning: Generally we have one default setting for best performance
5.3 Power supply
The STM32G474E-EVAL board is designed to be powered from a 5 V DC power source. It
incorporates a precise PTC and transil to protect the board from damage due to wrong
power supply. One of the following five 5
board configuration:
• Power jack CN25:
Marked PSU on the board (JP12 jumper setting on E5V on silkscreen). The positive
pole is on the center pin as illustrated in Figure 22.
The External power supply from Power jack CN25 is from 5 V to 18 V input voltage.
The dedicated DC/DC regulator ST1S41PHR is used for about 5.2 V output voltage
and provided up to 3 A current.
• Micro-B USB receptacle CN21 of STLINK-V3E with enumeration:
Up to 500 mA can be supplied to the board (JP12 jumper setting on STLK on
silkscreen).
Offers the enumeration feature described in Section 5.3.1.
• Micro-B USB receptacle CN21 of STLINK-V3E without enumeration:
Up to 1000 mA can be supplied to the board directly without enumeration (JP12 jumper
setting on CHGR on silkscreen).
• USB Type-C receptacle CN22 of USB PD interface:
Marked TYPE-C on the board (JP12 jumper setting on U5V on silkscreen). Up to
500 mA can be supplied to the board in this way.
• Pin 49 of CN5 and Pin 49 of CN6 extension connectors for custom daughterboard:
Marked 5V_D on the board (JP12 jumper setting on D5V on silkscreen).
Default setting.
PE5 connects to TRACED2
PE5 connects to MC1_DissipativeBrake
of many shared features, but it is easy for users to configure
features as we have many default settings for MCU ports
(solder bridge or resistor is soldered).
V DC power inputs can be used, upon appropriate
The LD6 green LED turns on when the voltage on the power line marked as 5 V is present.
All supply lines required for the operation of the components on the STM32G474E-EVAL
are derived from that 5
V line.
Tabl e 5: Power supply related jumper and solder bridge settings describes the settings of all
jumpers related to powering the STM32G474E-EVAL and extension board. VDD_MCU is
STM32G474QET6U digital supply voltage line. It can be connected to a fixed 3.3
UM2514 Rev 4 19/83
V or with
82
Hardware layout and configuration UM2514
an adjustable voltage regulator controlled by RV3 potentiometer and producing a range of
voltages between 1.62
V and 3.6 V.
5.3.1 Supplying the board through STLINK-V3E USB port
To power the STM32G474E-EVAL this way, the USB host (a PC) gets connected to the
Micro-B USB receptacle of the STM32G474E-EVAL board via a USB cable. The connection
event starts the USB enumeration procedure. In its initial phase, the host USB port current
supply capability is limited to 100
STM32G474E-EVAL draws power at that time: the U25 STMPS2151 power switch is set to
the OFF position, which isolates the rest of the STM32G474E-EVAL from the power source.
In the next phase of the enumeration procedure, the host PC informs the STLINK-V3E
facility of its capability to supply current up to 300
V3E sets the U25 STMPS2151 switch to ON position to supply power to the rest of the
STM32G474E-EVAL board. If the PC USB port is not capable of supplying current up to
300
mA, the CN25 power jack is available to supply the board.
If a short-circuit occurs on the board, the STMPS2151 power switch protects the USB port
of the host PC against a current demand exceeding 500
lights up.
The STM32G474E-EVAL board can also be supplied from a USB power source not
supporting enumeration, such as a USB charger. In this particular case, jumper JP12 must
be fitted with a jumper hat as shown in
bridge settings. STLINK-V3E bypasses STMPS2151 power regardless of enumeration
procedure result and passes the power unconditionally to the board.
mA. It is enough because only STLINK-V3E part of the
mA. If the answer is positive, the STLINK-
mA. In such an event, the LD7 LED
Tabl e 5: Power supply related jumper and solder
The LD6 green LED turns on whenever the whole board is powered.
5.3.2 Using STLINK-V3E along with powering through CN25 power jack
When the board requires a current higher than 300 mA, the host PC, connected to STLINKV3E USB port for debugging or programming, cannot supply the STM32G474QET6U MCU.
In such a case, the board can be powered through CN25 (marked PSU on the board).
To do this, it is important to power the board before connecting it with the host PC, which
requires the following sequence to be respected:
1. Set the jumper JP12 in E5V position
2. Connect the external power source to CN25
3. Check that the green LED LD6 is turned on
4. Connect host PC to USB connector CN21
Caution: In case the board requires more than 300 mA and the host PC is connected via USB before
the board is powered from CN25, the following risk events are possible (listed in reverse
severity order):
1. The host PC is capable of supplying 300 mA (the enumeration succeeds) but it
features no over-current protection on its USB port. It is damaged due to over- current.
2. The host PC is capable of supplying 300 mA (the enumeration succeeds) and it has a
built-in over-current protection on its USB port, limiting or shutting down the power out
of its USB port when the excessive current demand from the STM32G474E-EVAL is
detected. This causes an operating failure of the STM32G474E-EVAL.
3. The host PC is not capable of supplying 300 mA (the enumeration fails). The STLINKV3E does not supply the rest of the STM32G474E-EVAL from its USB port VBUS line.
20/83 UM2514 Rev 4
UM2514 Hardware layout and configuration
67/. &+*5(989 '69
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67/. &+*5(989 '69
67/. &+*5(989 '69
Tabl e 5 details jumper and solder bridge settings used for the configuration of the power
supply of the STM32G474E-EVAL.
Table 5. Power supply related jumper and solder bridge settings
Jumper /
solder bridge
JP12
Power source
selector
setting Configuration
Default setting.
STM32G474E-EVAL is supplied through CN21
Micro-B USB receptacle. Depend on host PC USB
port’s powering capability declared in the
enumeration.
STM32G474E-EVAL is supplied through CN22 USB
Type-C receptacle.
STM32G474E-EVAL is supplied through pin 49 of
CN5 and pin 49 of CN6 extension connectors.
Default setting.
STM32G474E-EVAL is supplied through CN 25 power
jack.
STM32G474E-EVAL is supplied through CN21
Micro-B USB receptacle.
Setting for powering the board through CN21 using
USB charger.
JP7
Vbat connection
JP6
VDDA
connection
JP11
VDD_MCU
connection
Default setting.
Vbat is connected to VDD.
Vbat is connected to battery.
VDDA terminal of STM32G474QET6U is connected
with VDD_MCU.
Default setting.
VDDA terminal of STM32G474QET6U is connected
to 3.3 V.
Default setting.
VDD_MCU (VDD terminals of STM32G474QET6U)
is connected to fixed 3.3 V.
VDD_MCU is connected to voltage in the range from
+1.62 V to +3.61 V, adjustable with potentiometer
RV3.
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Note: On all STLINK-V3E boards, the target application is now able to run even if the STLINK-V3E
is either not connected to a USB host, or is powered through a USB charger (or through a
not-enumerating USB host).
5.4 Clock references
Two clock references are available on the STM32G474E-EVAL Evaluation board for the
STM32G474QET6U target microcontroller.
• 32.768 kHz crystal X3, for embedded RTC
• 24 MHz crystal X2, for main clock generator
The main clock generation is possible via an internal RC oscillator or from STLK_MCO,
disconnected by removing resistors R312, R313 and R317 when internal RC clock is used.
Table 6. X3 crystal related solder bridge settings
SB88
SB87
SB82
SB81
Solder
bridge
Solder
bridge
Setting Configuration
Default setting.
Open
Closed
Open
Closed
PC14 OSC32_IN terminal is not routed to extension connector
CN5. X3 is used as clock reference.
PC14 OSC32_IN is routed to extension connector CN5. Resistor
R315 must be removed, for X3 quartz circuit not to disturb clock
reference or source on daughter board.
Default setting.
PC15 OSC32_OUT terminal is not routed to extension connector
CN5. X3 is used as clock reference.
PC15 OSC32_OUT is routed to extension connector CN5. Resistor
R314 must be removed, for X3 quartz circuit not to disturb clock
reference on daughter board.
Table 7. X2 crystal related solder bridge settings
Setting Configuration
Default setting.
open
closed
open
closed
PF0 OSC_IN terminal is not routed to extension connector CN5. X2
is used as clock reference.
PF0 OSC_IN is routed to extension connector CN5. Resistor R317
and R312 must be removed, in order not to disturb clock reference
or source on daughterboard.
Default setting.
PF1 OSC_OUT terminal is not routed to extension connector CN5.
X2 is used as clock reference.
PF1 OSC_OUT is routed to extension connector CN5. Resistor
R313 must be removed, in order not to disturb clock reference or
source on daughter board.
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!
!
5.5 Reset source
The general reset of the STM32G474E-EVAL board is active low. The reset sources are:
• reset button B3
• JTAG/SWD connector CN14, ETM trace connector CN17, STDC14 connector CN16
and TAG connector CN15 (reset from debug tools)
• Through extension connector CN5 pin 30 (reset from daughter board)
• Embedded STLINK-V3E
5.6 Boot Option
After reset, the STM32G474QET6U MCU can boot from the following embedded memory
locations:
• Main (user, non-protected) Flash memory
• System (protected) Flash memory
• RAM, for debugging
The boot option is configured by setting switch SW7 (BOOT0) and the boot base address
programmed in the nBOOT1, nBOOT0 and nSWBOOT0 of FLASH_OPTR option bytes.
Table 8. Boot selection switch
Switch Setting Description
SW7
5.6.1 Limitations
BOOT0 PB8 is exclusive with FDCAN1, JP1 must be opened to disconnect FDCAN1_RX
signal.
5.7 Audio
A WM8894 codec is connected to SAI interface of the STM32G474QET6U. It supports the
TDM feature of the SAI port. The TDM feature enables the STM32G474QET6U to
simultaneously stream two independent stereo audio channels to two separate stereo
analog audio outputs. The codec communicates with the STM32G474QET6U via the I2C3
bus, which is shared with MFX, Temperature Sensor, EXT_I2C connector.
BOOT0 line is tied high. STM32G474QET6U boots from system Flash
memory (nBOOT1 bit of FLASH_OPTR register is set high) or from
RAM (nBOOT1 is set low).
Default setting.
BOOT0 line is tied low. STM32G474QET6U boots from Main Flash
memory.
-
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The audio connections are:
• The analog line input is connected to ADC of WM8994ECS/R through blue audio jack
CN23.
• The analog line output is connected to DAC of WM8994ECS/R via green audio jack
CN26.
• Two external speakers can be connected to WM8994ECS/R via JP17 for right speaker
and JP16 for left speaker, not fitted as default.
The I2C-bus address of WM8994 codec are 0x34 or 0x35.
5.7.1 Limitations in using audio features
Due to the share of PE2, PE3, PE4 and PF6 terminals of STM32G474QET6U by multiple
peripherals, refer to
• If the SAI_MCLKA, SAI_SDB and SAI_FSA are used as part of SAI port, it cannot be
used as TRACE and FMC peripheral.
• If the SAI port of STM32G474QET6U is used for streaming audio to the WM8994
codec IC, STM32G474QET6U cannot control the motor.
Tabl e 4. The following limitations apply in using the audio features:
5.8 USB FS port
The STM32G474E-EVAL board supports USB full-speed (FS) as a USB device
communication via USB Type-C receptacle CN22.
When a USB host connection to the USB Type-C receptacle CN22 of STM32G474E-EVAL
is detected, the STM32G474E-EVAL board starts behaving as a USB device. Depending on
the powering capability of the USB host, the board can take power from VBUS terminal of
CN22. In the board schematic diagrams, the corresponding power voltage line is called
U5V.
5.8.1 Operating voltage
The USB-related operating supply voltage of STM32G474QET6U (VDD_USB line) must be
within the range from 3.0
V to 3.6 V.
5.9 RS232 and RS485 port
The STM32G474E-EVAL board offers one RS-232 communication or RS-485
communication port. They use the same DB9 male connector CN11. RX and TX signals of
USART1 port of STM32G474QET6U are shared with USBPD and VCP.
configuration PA10 of STM32G474QET6U terminals.
5.9.1 Limitations
Due to the sharing of PA9 and PA10 terminals of STM32G474QET6U by multiple
peripherals, if RS-232 or RS485 port use as part of USART1 port, it cannot be used as
USBPD and VCP peripheral.
Table 9 shows the
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5.9.2 Operating voltage
The RS-232 or RS-485 operating supply voltage of STM32G474QET6U (VDD line) must be
within the range from 1.62
Table 9. Configuration PA10 of STM32G474QET6U terminals
V to 3.6 V.
USART1_RX is connected to RS-232 RXD of
transceiver.
JP9
USART1_RX
connection
JP10
VCP_RX
connection
5.10 microSD card
The CN28 slot for microSD card is routed to STM32G474QET6U SPI port, accepting 8GB
(or more) Micro SD card. One 16-Gbyte microSD card is delivered as part of STM32G474EEVAL. The card insertion switch is routed to the MFX_GPIO5 of MFX MCU port and it must
be set with internal pull-up.
5.10.1 Limitations
Due to the share of I/O port, the following limitations apply:
• The microSD card cannot be operated simultaneously with motor control connector 2.
USART1_RX is connected to RS-485 RO of
transceiver.
Default setting.
USART1_RX is not connected to RS-232 or RS-485
of transceiver.
Default setting.
VCP_RX is connected to STLINK-V3E
STLK_VCP_TX.
VCP_RX is not connected to STLINK-V3E
STLK_VCP_TX.
5.10.2 Operating voltage
The supply voltage for STM32G474E-EVAL microSD card operation must be within the
range from 1.62
V to 3.6 V.
5.11 Motor control
The CN2 (MC1) and CN4 (MC2) connectors are designed to receive a motor control
module. Available signals on these connectors include emergency stop, motor speed, 3phase motor current, bus voltage, heatsink temperature coming from the motor driving
board and 6 channels of PWM control signal going to the motor driving circuit.
The dedicated motor control STM32G474E-EVAL1 board is supported for motor control
module application only.
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