STMicroelectronics STM32439I-EVAL User manual

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March 2015 DocID025151 Rev 2 1/70
1
UM1668
User manual
STM32439I-EVAL evaluation board for the STM32F439 line
Introduction
The STM32439I-EVAL evaluation board is a complete demonstration and development
platform for STMicroelectronics ARM®Cortex®-M4 core-based STM32F439NIH6
microcontrollers. It features three I2C, six SPIs with two muxed full-duplex I2S, SDIO, four
USART, four UART, two CAN, three 12-bit ADC, two 12-bit DAC, one SAI, 8- to 14-bit digital
camera module interface, internal 256+4 KB SRAM and 2 MB Flash, USB HS OTG and
USB FS OTG, Ethernet MAC, FMC interface, cryptographic hardware accelerator, JTAG
debugging support. This evaluation board can be used as a reference design for user
application development but it is not considered as a final application.
The full range of hardware features on the board helps the user to evaluate all peripherals
(USB OTG HS, USB OTG FS, Ethernet, Motor Control, CAN, MicroSD Card, USART, Audio
DAC and ADC, digital microphone, IrDA, CAN, RF-EEPROM, SRAM, Nor Flash, SDRAM,
5.7" TFT LCD with a capacitive touch panel etc.) and develop his own applications.
Extension headers make it possible to easily connect a daughterboard for specific
applications development.
The integrated ST-LINK/V2 provides an embedded in-circuit debugger and programmer for
the STM32 MCU.
Figure 1. STM32439I-EVAL evaluation board (a)
a. Picture not contractual
www.st.com

Contents UM1668
2/70 DocID025151 Rev 2
Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Delivery recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Development and debug support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.3 Clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4 Reset source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5 Boot option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.6 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.7 USB OTG1 FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.8 USB OTG2 HS & FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9 RS-232 & IrDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.10 MicroSD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.11 RF-EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.12 CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.13 Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.14 Extension connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.15 Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.16 Analog input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.17 Camera module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.18 Display and input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.19 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.1 Motor control connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2 Extension connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3 RF-EEPROM daughterboard connector CN3 . . . . . . . . . . . . . . . . . . . . . 26

DocID025151 Rev 2 3/70
UM1668 Contents
3
3.4 Analog input connector CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.5 Camera module connector CN5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.6 Daughterboard extension connector CN6 and CN7 . . . . . . . . . . . . . . . . . 28
3.7 RS-232 connector CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.8 USB OTG2 HS Micro-AB connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . 33
3.9 Ethernet RJ45 connector CN10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.10 Memory connectors CN11 and CN12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.11 ETM trace debugging connector CN13 . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.12 USB OTG1 FS Micro-AB connector CN14 . . . . . . . . . . . . . . . . . . . . . . . . 38
3.13 USB OTG2 FS Micro-AB connector CN15 . . . . . . . . . . . . . . . . . . . . . . . . 38
3.14 JTAG/SWD connector CN16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.15 MicroSD connector CN17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.16 Power connector CN18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
3.17 ST-LINK/V2 programming connector CN19 . . . . . . . . . . . . . . . . . . . . . . . 40
3.18 TFT LCD connector CN20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
3.19 ST-LINK/V2 USB Type B connector CN21 . . . . . . . . . . . . . . . . . . . . . . . . 41
3.20 CAN D-type 9-pin male connector CN22 . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.21 Audio jack CN23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.22 Audio terminal CN24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.23 ST-LINK/V2 programming Tag-connector CN25 . . . . . . . . . . . . . . . . . . . 42
4 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Appendix A STM32439I-EVAL I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Appendix B Mechanical dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

List of tables UM1668
4/70 DocID025151 Rev 2
List of tables
Table 1. Third-party toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 2. Power related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 3. 32.786 KHz crystal X1 related solder bridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4. 25 MHz crystal X2 related solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 5. Boot related switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 6. Audio related jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 7. USB OTG2 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 8. RS-232 & IrDA related jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 9. CAN related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 10. Ethernet related jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 11. Ethernet related solder bridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 12. NOR Flash related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 13. LCD modules connector (CN20). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 14. Motor control related solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 15. Motor control connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 16. Extension connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 17. RF-EEPROM daughterboard connector CN3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 18. Analog input-output connector CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 19. Camera module connector CN5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 20. Daughterboard extension connector CN6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 21. Daughterboard extension connector CN7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 22. RS-232 connector CN8 with ISP support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 23. USB OTG HS Micro-AB connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 24. RJ45 connector CN10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 25. Memory connector CN11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 26. Memory connector CN12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 27. ETM trace debugging connector CN13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 28. USB OTG1 FS Micro-AB connector CN14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 29. USB OTG2 FS Micro-AB connector CN15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 30. JTAG/SWD debugging connector CN15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 31. MicroSD connector CN17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 32. USB type B connector CN21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 33. CAN D-type 9-pin male connector CN22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 34. Audio terminal CN24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 35. STM32439I-EVAL I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Table 36. Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Table 37. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

DocID025151 Rev 2 5/70
UM1668 List of figures
5
List of figures
Figure 1. STM32439I-EVAL evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 3. Evaluation board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4. Orientation setting of 5.7 inch LCD daughterboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 5. PCB underside rework for motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 6. PCB topside rework for motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 7. Motor control connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 8. Extension connector CN2 top view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 9. RF-EEPROM daughterboard connector CN3 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 10. Analog input-output connector CN4 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 11. Camera module connector CN5 (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 12. RS-232 connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 13. USB OTG2 HS Micro-AB connector CN9 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 14. Ethernet RJ45 connector CN10 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 15. ETM trace debugging connector CN13 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 16. USB OTG1 FS Micro-AB connector CN14 (front view). . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 17. USB OTG2 FS Micro-AB connector CN15 (front view). . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 18. JTAG/SWD debugging connector CN16 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 19. MicroSD connector CN17 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 20. Power supply connector CN18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 21. USB type B connector CN21 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 22. CAN D-type 9-pin male connector CN22 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 23. Audio terminal CN24 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 24. STM32439I-EVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 25. MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 26. Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 27. SRAM, Flash and SDRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 28. Audio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 29. LCD, camera and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 30. Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 31. USB OTG HS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 32. USB OTG FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 33. RS-232 and IrDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 34. CAN, MicroSD Card and IO expander . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 35. Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 36. Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 37. Extension connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 38. ST-LINK/V2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 39. JTAG and trace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 40. 5.7' TFT LCD daughterboard MB1063 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Figure 41. Camera daughterboard MB1066 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure 42. Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Overview UM1668
6/70 DocID025151 Rev 2
1 Overview
1.1 Features
•STM32F439NIH6 microcontroller
•Six 5 V power supply options:
–Powerjack
– ST-LINK/V2 USB connector
– User USB HS connector
– User USB FS1 connector
– User USB FS2 connector
– Daughterboard
•SAI Audio DAC, stereo audio jack which supports headset with microphone
•Stereo digital microphone, audio terminal connector used to connect external speakers
•2 GByte (or more) SDIO interface MicroSD Card
•RF-EEPROM on I2C compatible serial interface
•RS-232 communication
•IrDA transceiver
•JTAG/SWD and ETM trace debug support, ST-LINK/V2 embedded
•IEEE-802.3-2002 compliant Ethernet connector
•Camera module
•8 M x 32-bit SDRAM, 1 M x 16-bit SRAM & 8 M x 16-bit NOR Flash
•5.7 inch 640 x 480 pixel TFT color LCD with capacitive touch panel
•Joystick with 4-direction control and selector
•Reset, WakeUp, Tamper or key button
•4 user color LEDs
•Extension connectors & memory connectors for daughterboard or wrapping board
•USB OTG HS and FS with Micro-AB connectors
•RTC with backup battery
•CAN2.0A/B compliant connection
•Potentiometer
•Motor control connector
1.2 Demonstration software
Demonstration software is preloaded in the Flash memory of the board for easy
demonstration of the device peripherals in stand-alone mode. For more information and to
download the latest version, refer to the STM32439I-EVAL demonstration software on
www.st.com.

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UM1668 Overview
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1.3 Order code
To order the evaluation board based on STM32F439NIH6 MCU and 5.7" TFT LCD, use the
order code STM32439I-EVAL2.
1.4 Delivery recommendations
Some verifications are needed before using the board for the first time to make sure that
nothing was damaged during shipment and that no components are unplugged or lost.
When the board is extracted from its plastic bag, please check that no component remains
in the bag.
The main components to verify are:
1. The 25 MHz crystal (X2) & 25 MHz crystal (X4) which may have been removed by a
shock from its socket.
2. The MicroSD Card which may have been ejected from the connector CN17 (right side
of the board).
3. The dual-interface EEPROM board (ANT7-M24LR-A) which may have been unplugged
from the connector CN3 (top left corner of the board).
4. The camera module on the camera daughterboard (MB1066) which may have been
unplugged.
Warning: There is an explosion risk if the battery is replaced by an
incorrect one.
Make sure to dispose of used batteries according to the
instructions.

Hardware layout and configuration UM1668
8/70 DocID025151 Rev 2
2 Hardware layout and configuration
The STM32439I-EVAL evaluation board is designed around the STM32F439NIH6 (216-pin
TFBGA package).
The hardware block diagram Figure 2 illustrates the connection between the
STM32F439NIH6 and peripherals (SDRAM, SRAM, NOR Flash, camera module, color
LCD, USB OTG connectors, motor control connector, USART, IrDA, Ethernet, audio, CAN,
RF-EEPROM, MicroSD Card and embedded ST-LINK) and Figure 3 will help the user to
locate these features on the actual evaluation board.
Figure 2. Hardware block diagram
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DocID025151 Rev 2 9/70
UM1668 Hardware layout and configuration
69
Figure 3. Evaluation board layout
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Hardware layout and configuration UM1668
10/70 DocID025151 Rev 2
2.1 Development and debug support
Version 2 of the ST-LINK (ST-LINK/V2) is embedded on the board. This tool allows on-board
program loading and debugging of the STM32 using a JTAG or SWD interface. Third-party
debug tools are also supported by the JTAG/SWD connector, CN16, and ETM Trace
connector, CN13.
A specific driver must be installed by the user on his PC to communicate with the embedded
ST-LINK/V2. An install shield called ST-LINK_V2_USBdriver.exe is available on the web. To
download and install this driver, refer to the Software and development tools page for
STM32 on www.st.com.
Third-party toolchains, ARM®Atollic®TrueSTUDIO®, KEILTM MDK-ARMTM, IAR
EWARM®and Altium®, TASKING™ VX-Toolset support ST-LINK/V2 according to the
following table:
The embedded ST-LINK/V2 is connected to the PC via a standard USB cable connected to
connector CN21. The bicolor LED LD11 (COM) indicates the status of the communication as
follows:
•Red LED slow blinking/Off: At power on before USB initialization
•Red LED fast blinking/Off: After the first correct communication between PC and ST-
Link/V2 (enumeration)
•Red LED On: When initialization between PC and ST-LINK/V2 is successfully finished
•Green LED On: After successful target communication initialization
•Red/Green LED blinking: During communication with target
•Red LED On: Communication finished and OK
•Orange LED On: Communication failure
Note: The board can be powered via CN21 (embedded ST-LINK/V2 USB connector) even if an
external tool is connected to CN13 (ETM trace connector) or CN16 (external JTAG & SWD
connector).
By default ETM only works at 50 MHz clock because ETM signals are shared with other
peripherals.
If best performance of ETM is required (90 MHz), then R29, R32, R34, R36, R40, R114 and
R120 must be removed to reduce the stub on ETM signals. In this case SAI and camera are
not functional and NOR Flash and SRAM's addresses are limited on A18.
Caution: When an external high speed debug tool connected to CN13 or CN16 is used for program
loading or debugging, it is recommended to remove ESD protections D9 to D13 connected
on JTAG signals.
Table 1. Third-party toolchains
Third-party Toolchains Version
ARM Atollic TrueSTUDIO 2.1
IAR EWARM 6.20
Keil MDK-ARM 4.20
Altium Tasking VX-Toolset 4.0.1

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69
2.2 Power supply
The STM32439I-EVAL evaluation board is designed to be powered by a 5 V DC power
supply and is protected by PolyZen from a wrong power plug-in event. It is possible to
configure the evaluation board to use any of following six sources for the power supply:
•5 V DC power adapter connected to CN18, the power jack on the board (Power Supply
Unit on silk screen of JP12(E5V)).
•5 V DC power with 500 mA limitation from CN21, the USB type B connector of ST-
LINK/V2 (USB 5 V power source on silkscreen of JP12(STlk)).
•5 V DC power with 500 mA limitation from CN9, the USB OTG2 HS Micro-AB
connector (USB 5V power source on silkscreen of JP12 (HS)).
•5 V DC power with 500 mA limitation from CN14, the USB OTG1 FS Micro-AB
connector (USB 5V power source on silkscreen of JP12 (FS1)).
•5 V DC power with 500 mA limitation from CN15, the USB OTG2 FS Micro-AB
connector (USB 5 V power source on silkscreen of JP12 (FS2)).
•5 V DC power from CN6 & CN7, the extension connectors for daughterboard
(daughterboard power source on silkscreen of JP12 (D5V)).
The power supply is configured by setting the related jumpers JP2, JP8 and JP12 as
described in Table 2.
Table 2. Power related jumpers
Jumper Description
JP2 JP2 is used to measure MCU current consumption manually by multimeter.
Default setting: Fitted
JP8
Vbat is connected to +3.3V when JP8 is set as shown to the right:
(Default setting)
Vbat is connected to battery when JP8 is set as shown to the right:
JP12(continued
on next page)
JP12 is used to select one of the six possible power supply resources.
For power supply from USB connector of ST-LINK/V2 (CN21) to
STM32439I-EVAL only, JP12 is set as shown to the right:
(Default setting)
For power supply jack (CN18) to the STM32439I-EVAL only,
JP12 is set as shown to the right:
For power supply from the daughterboard connectors (CN6 &
CN7) to STM32439I-EVAL only, JP12 is set as shown to the
right:
1 2 3
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Hardware layout and configuration UM1668
12/70 DocID025151 Rev 2
The LED LD10 is lit when the STM32439I-EVAL evaluation board is powered by the 5 V
correctly.
Note: In order to avoid the impact of USB PHY and Ethernet PHY and get precise results of
current consumption on JP2, the following configurations must be implemented:
•Configure Ethernet PHY in Power Down Mode by setting low level of IO_Expander
(EXP_IO1).
•Configure USB HS PHY in Low Power Mode (Register Address=04,bit 6 in USB PHY).
JP12 (continued)
For power supply from USB OTG2 FS (CN15) to STM32439I-
EVAL only, JP12 is set as shown to the right:
For power supply from USB OTG1 FS (CN14) to STM32439I-
EVAL only, JP12 is set as shown to the right:
For power supply from USB OTG2 HS (CN9) to STM32439I-
EVAL only, JP12 is set as shown to the right:
For power supply from power supply jack(CN18) to both
STM32439I-EVAL and daughterboard connected on CN6 &
CN7, JP12 is set as shown to the right (daughterboard must not
have its own power supply connected)
Table 2. Power related jumpers (continued)
Jumper Description
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69
2.3 Clock source
Two clock sources are available on the STM32439I-EVAL evaluation board for the
STM32F439NIH6 and embedded RTC.
The camera module, Ethernet PHY and USB PHY on the STM32439I-EVAL evaluation
board have their own clock sources.
•X1, 32.768 KHz crystal for embedded RTC.
•X2, 25 MHz crystal with socket for STM32F439NIH6 microcontroller, it can be removed
from the socket when an internal RC clock is used.
•X3, 24 MHz oscillator for camera module.
•X4, 25 MHz crystal with socket for Ethernet PHY.
•X5, 24 MHz crystal for USB OTG2 HS PHY.
Jumper JP6 for Ethernet clock refer to Section 2.13.
2.4 Reset source
The reset signal of STM32439I-EVAL evaluation board is low active. Reset sources include:
•Reset button B1
•Debugging tools from JTAG/SWD connector CN16 and ETM trace connector CN13
•Daughterboard from CN6
•Embedded ST-LINK/V2
Table 3. 32.786 KHz crystal X1 related solder bridges
Solder bridge Description
SB3
PC14 is connected to 32.786 KHz crystal when SB3 is open. (Default setting)
PC14 is connected to extension connector CN7 when SB3 is closed. In such case
R19 must be removed to avoid disturbance due to the 32.786 KHz quartz.
SB4
PC15 is connected to 32.786 KHz crystal when SB4 is open. (Default setting)
PC15 is connected to extension connector CN7 when SB4 is closed. In such case
R18 must be removed to avoid disturbance due to the 32.786 KHz quartz.
Table 4. 25 MHz crystal X2 related solder bridges
Solder bridge Description
SB5
PH0 is connected to 25 MHz crystal when SB5 is open. (Default setting)
PH0 is connected to extension connector CN6 when SB5 is closed. In such case
R20 must be removed to avoid disturbance due to the 25 MHz quartz
SB6
PH1 is connected to 25 MHz crystal when SB6 is open (Default setting).
PH1 is connected to extension connector CN7 when SB6 is closed. In such case
C23 & X2 must be removed to avoid disturbance due to the 25 MHz quartz.

Hardware layout and configuration UM1668
14/70 DocID025151 Rev 2
2.5 Boot option
The STM32439I-EVAL evaluation board can boot from:
•Embedded user Flash
•System memory with boot loader for ISP
•Embedded SRAM for debugging
The boot option is configured by setting switch SW1 (BOOT0) and SW2 (BOOT1).
Note: The RS-232 boot loader mechanism is not supported on the STM32439I-EVAL.
2.6 Audio
An audio codec WM8994ECS/R with 4 DACs and 2 ADCs inside is connected to the SAI
interface of the STM32F439NIH6 to support the TDM feature on the SAI port. This feature
implements audio recording on digital and analog microphone, and audio playback of
different audio streams on headphone and line-out at the same time.
It communicates with the STM32F439NIH6 via the I2C1 bus which is shared with the LCD,
camera module, RF-EEPROM, IO expander and CN2 connector.
The analog microphone on the headset is connected to the ADC of WM8994ECS/R.
External speakers can be connected to WM8994ECS/R via audio terminal connector CN24.
There are two digital microphones (MEMs microphone) MP34DT01TR on the STM32439I-
EVAL evaluation board. They can be connected to either audio codec or the I2S port of
STM32F439NIH6 by setting jumpers as shown in Table 6.
Table 5. Boot related switches
Switch Boot description Switch configuration
SW1 & SW2
STM32439I-EVAL boots from User Flash when SW1 is set
as shown to the right. SW2 is not required in this
configuration.
(Default setting)
STM32439I-EVAL boots from Embedded SRAM when
SW1 and SW2 are set as shown to the right.
STM32439I-EVAL boots from System Memory when SW1
and SW2 are set as shown to the right.
0 < > 1
SW
0 < > 1
SW1
SW2
0 < > 1
SW
SW

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69
Note: The I2C address of WM8994ECS/R is 0b0011010.
2.7 USB OTG1 FS
The STM32439I-EVAL evaluation board supports USB OTG1 full speed communication via
a USB Micro-AB connector (CN14) and USB power switch (U9) connected to VBUS. The
evaluation board can be powered by this USB connection at 5 V DC with a 500 mA current
limitation.
Green LED LD7 will be lit in one of these cases:
•Power switch (U9) is ON and the STM32439I-EVAL is acting as a USB host.
•VBUS is powered by another USB host and the STM32439I-EVAL is acting as a USB
device.
Red LED LD8 will be lit when over-current occurs.
JP16 must be removed when using USB OTG FS as mentioned in Table 9.
Table 6. Audio related jumpers
Jumper Description
JP14
Data signal on digital microphone is connected to audio codec when JP14 is
set as shown to the right
(Default setting)
Data signal on digital microphone is connected to I2S port of STM32F439NIH6
when JP14 is set as shown to the right (also need to set JP5 according to this
table)
JP15
Clock signal on digital microphone is connected to audio codec when JP15 is
set as shown to the right
(Default setting)
Clock signal on digital microphone is connected to Timer output (PC7) of
STM32F439NIH6 when JP15 is set as shown to the right (also need to set
JP4 according to this table)
JP4
PB4 is as TDO/SWO signal when JP4 is set as shown to the right
(Default setting)
PB4 is connected to Timer input(PC6) of STM32F439NIH6 as I2S clock signal
when JP4 is set as shown to the right (also need to set JP15 according to this
table)
JP5
PD6 is as FMC_NWAIT signal when JP5 is set as shown to the right
(Default setting)
PD6 is connected to digital microphone as I2S data signal when JP5 is set as
shown to the right (also need to set JP14 according to this table):
JP13
Digital microphone power source is connected to +3.3V power when JP13 is
set as shown to the right
Digital microphone power source is connected to MICBIAS1 from
WM8994ECS/R when JP13 is set as shown to the right. MICBIAS1 setting is
requested by digital microphone connected to Codec.
(Default setting)
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2
3
1 2 3
1 2 3

Hardware layout and configuration UM1668
16/70 DocID025151 Rev 2
2.8 USB OTG2 HS & FS
The STM32439I-EVAL evaluation board supports USB OTG2:
•High speed communication via USB Micro-AB connector (CN9), USB high speed PHY
(U7) for high speed function
•Full speed communication via USB Micro-AB connector (CN15)
The evaluation board can be powered by these USB connectors (CN9 or CN15) at 5 V DC
with a 500 mA current limitation.
Some OTG2 FS signals are shared with the OTG2 HS ULPI bus, so some PCB rework is
needed when using OTG2 FS (CN15) as shown in Table 7.
A USB power switch (U6) is connected on VBUS and provides power to either:
•CN9 (with R81 & R97 mounted and R83 & R95 un-mounted)
•CN15 (with R83 & R95 mounted and R81& R97 un-mounted)
Green LED LD5 (for CN9) or LD9 (for CN15) will be lit when either:
•Power switch (U6) is ON and STM32439I-EVAL is acting as a USB host.
•VBUS is powered by another USB host, and STM32439I-EVAL is acting as a USB
device.
Red LED LD6 is lit if over-current occurs.
2.9 RS-232 & IrDA
RS-232 and IrDA communication is supported by 9-pin RS-232 D-type connector, CN8, and
IrDA transceiver, U1, which is connected to USART1 of the STM32F439NIH6 on the
STM32439I-EVAL evaluation board.
Table 7. USB OTG2 configuration
Function Mount Remove
OTG2 HS-CN9 (Default) R108, R112, R81,R97 R260, R264, R83,R95
OTG2 FS-CN15 R260, R264, R83,R95 R108, R112, R81,R97
Table 8. RS-232 & IrDA related jumper
Jumper Description
JP7
USART1_RX is connected to RS-232 transceiver and RS-232 communication
is enabled when JP7 is set as shown to the right
(Default setting):
USART1_RX is connected to IrDA transceiver and IrDA communication is
enabled when JP7 is set as shown to the right:
1 2 3
1 2 3

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69
2.10 MicroSD Card
A 2 GB (or more) MicroSD Card can be connected to the STM32F439NIH6 SDIO port.
MicroSD Card detection is managed by I/O expander GPIO15.
2.11 RF-EEPROM
An RF-EEPROM daughterboard ANT7-M24LR-A is mounted on CN3 of the
STM32439I-EVAL board via the I2C1 bus. The RF-EEPROM can be accessed by the
microcontroller via the I2C1 bus or by radio frequency (RF) using a 13.56 MHz reader
(for example, CR95HF).
The I2C address of RF-EEPROM is 0b1010000.
2.12 CAN
The STM32439I-EVAL evaluation board supports one channel of CAN2.0A/B complaint
CAN bus communication based on 3.3 V CAN transceiver.
High-speed mode, standby mode and slope control mode are available and are selected by
setting JP10.
Table 9. CAN related jumpers
Jumper Description
JP10
CAN transceiver is working in standby mode when JP10 is set as shown to
the right:
CAN transceiver is working in high-speed mode when JP10 is set as shown to
the right: (default setting)
CAN transceiver is working in slope control mode when JP10 is open.
JP11 CAN terminal resistor is enabled when JP11 is fitted.
Default setting: Not fitted
JP16
PA11 is only connected with USB FS1 DM signal when JP16 is fitted. (default setting)
PA11 is connected with CAN RX signal when JP16 is fitted.
If the CAN function is being used, USB connector CN14 should be disconnected to leave
USB FS1_DM signal floating.
1 2 3
1 2 3

Hardware layout and configuration UM1668
18/70 DocID025151 Rev 2
2.13 Ethernet
The STM32439I-EVAL evaluation board supports 10M/100M Ethernet communication by a
PHY DP83848CVV (U5) and integrated RJ45 connector (CN10). Ethernet PHY is
connected to the STM32F439NIH6 via the MII interface.
A 25 MHz clock can be generated by PHY or provided by MCO from the STM32F439NIH6
by setting jumper JP6 as shown in Table 10.
Note: Ethernet works properly in the default setting (which RX_ER is not connected to PI10 of
STM32F439NIH6) because PI10 is shared with data signal of SDRAM. If RX_ER signal is
needed, remove R244 and solder R43.
2.14 Extension connector
An extension connector (CN2) is intended for external board connection to the STM32439I-
EVAL evaluation board using cable FFSD-05-D-04.00-01-N.
The external board can exchange data with the STM32F439NIH6 via the I2C1 or SPI3
ports.
Table 10. Ethernet related jumper
Jumper Description
JP6
25 MHz clock is provided by external Crystal X4 when JP5 is set as shown to
the right: (Default setting)
25 MHz clock for MII is provided by MCO at PA8 when JP5 is set as shown to
the right:
Table 11. Ethernet related solder bridges
Solder bridges Description
SB7 MII CRS on DP83848CVV is connected to PA0 when SB7 is closed. PA0 is shared
with Wakeup button and MC_ENA. Default setting: Open
SB8 MII COL on DP83848CVV is connected to PH3 when SB8 is closed. PH3 is shared
with SDRAM chip select SDNE0. Default setting: Open
1 2 3
1 2 3

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69
2.15 Memories
8 M x 32-bit SDRAM is connected to SDRAM Bank1 of the STM32F439NIH6 FMC
interface.
1 Mbit x 16 SRAM is connected to bank1 NOR/PSRAM2 of the FMC interface and both 8-bit
and 16-bit access is allowed by BLN0 & BLN1 connected to BLE & BHE of SRAM
respectively.
128 Mbit NOR Flash is connected to bank1 NOR/PSRAM1 of the FMC interface. The 16-bit
operation mode is selected by the pull-up resistor connected to BYTE pin of NOR Flash.
Write protection is enabled or disabled by the setting of jumper JP9:
All memory signals are also connected on memory connectors CN11 and CN12 for memory
daughterboards.
Some limitations occur when using other peripherals:
1. FMC addressing limitation depending on number of trace data buses used
(A18 max for 4-bit ETM to A21 max for 1-bit ETM).
2. NOR Flash addresses limited to A21 when SAI or camera module is used.
In such cases, memory addresses A18 to A21 not connected to FMC are pulled down so
memories can be addressed within a limited address range. If A22 is required, the camera
board should be removed and SAI1_SDA should be tri-stated. AIF1_TRI (address: 0x300)
bit 13 of the W8994 can be used to tri-state ADCDAT1 pin (SAI1_SDA) when it is set to 1.
2.16 Analog input
The two-pin header CN4, and 10 Kohm potentiometer RV1, are connected to PF10 of the
STM32F439NIH6 as analog input. A low pass filter can be implemented by replacing R27
and C24 with the resistor and capacitor requested by end user's application.
2.17 Camera module
Connector CN5 (for DCMI signals) on the STM32439I-EVAL evaluation board connects to
the camera module daughterboard MB1066.
DCMI signals are duplicated with other peripherals (SAI, I2S, NOR Flash, MicroSD Card,
Trace, Ethernet).
These peripherals may not function correctly when the camera module is being used.
To avoid SAI1_SDA signal impacting D7, SAI1_SDA should be tri-stated.
Refer to Section 2.15 to see how to tri-state SAI1_SDA.
Table 12. NOR Flash related jumpers
Jumper Description
JP9
Write protection is enabled when JP9 is fitted while write protection is disabled when JP9 is
not fitted.
Default Setting: Not fitted
JP5 Description of JP5 is in Section 1.6: Audio