ST STEVAL-STWINBX1

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Pin no. Description STM32 pin Signal

9 USART_TX PA7 USART3_TX

10 INT/I2Cz_SMB PG5/PG6/PD15 INT_EX

11 USART_RX PA5 USART3_RX

12 RESET PB1 GPIO1_EX

13 USART_RTS PD13 USART3_RTS

14 ADC PC3 ADC_EX

15 Not used -

16 PWM PC6 TIM3_PWM

17 GPIO3_EX PF10 GPIO3_EX

18 GPIO2_EX PF8 GPIO2_EX

19 SPIx_NSS PI0/PA15 SPI2_NSS/SPI3_NSS

20 Not used -

21 SPIx_MOSIp PI3/PB5 SPI2_MOSI/SPI3_MOSI

22 GPIO1/SAI1_SCK PE5 SAI1_SCK_A

23 SPIx_MISOp PD3/PB4 SPI2_ MISO/SPI3_MISO

24 GPIO2/SAI1_FS PE4 SAI1_FS_A

25 SPIx_SCK PI1/PG9 SPI2_ SCK/SPI3_SCK

26 GPIO3/SAI1_SD PE3/PE6 SAI1_SD_A/SAI1_SD_B

27 I2Cz_SCL PG7 I2C3_SCL

28 GPIO4/SAI1_MCLK PE2 SAI1_MCLK_A

29 V REG2 - 3V3_Ext

30 SPIx_MISOs PI2 SPI2_MISO_P2

31 VCONN 5V/SYS

32 Not used - -

33 GND - -

34 GND - -

UM2965

Functional blocks

UM2965 - Rev 1

page 24/58

Main Page

Figure 1. Stwin.box Mounted with the Plastic Case1
Getting Started2
Precautions for Use2
Features2
Kit Components2
Layout of the Core System Board (STEVAL-STWINBX1) Components3
Figure 2. STEVAL-STWINBX1 Components3
Figure 3. Layout of the Core System Board Top Components3
Core System Board4
Figure 4. Layout of the Core System Board Bottom Components4
Figure 5. STEVAL-STWINBX1 Block Diagram4
Functional Blocks5
Sensing5
Figure 6. STEVAL-STWINBX1 Evaluation Kit (Top View)5
Figure 7. STEVAL-STWINBX1 Evaluation Kit (Bottom View)5
Figure 8. STEVAL-STWINBX1 - Overview of the Sensing Components6
Figure 9. STEVAL-STWINBX1 - Sensors on the Top Side6
Table 1. ILPS22QS I/O Configuration7
Figure 10. STEVAL-STWINBX1 - Sensors on the Bottom Side7
Table 2. STTS22H I/O Configuration8
Table 3. ISM330DHCX I/O Configuration8
Table 4. IIS3DWB I/O Configuration9
Table 5. IIS2DLPC I/O Configuration9
Table 6. IIS2ICLX I/O Configuration10
Table 7. IIS2MDC I/O Configuration10
Processing and Connectivity11
Table 8. IMP23ABSU I/O Configuration11
Table 9. IMP34DT05I/O Configuration11
Figure 11. Main Connectivity Components and the STM32U585AI Processing Unit12
Figure 12. MCU and Connectivity Components (Top View)12
Figure 13. MCU and Connectivity Components (Bottom View)13
Table 10. Bluenrg2-M2 I/O Configuration14
Table 11. MXCHIP EMW3080 I/O Configuration15
Figure 14. MXCHIP EMW308015
Table 12. STR485LV I/O Configuration16
Table 13. USB Connector I/O Configuration16
Table 14. STSAFE-A110 I/O Configuration16
Table 15. Micro-SD Card Socket I/O Configuration16
Power Management17
Figure 15. Power Management of the Stwin.box Core System Board17
Figure 16. Power and Protections17
Table 16. BATT1 Connector Pins and Signals20
Figure 17. BATT1 Connector20
Figure 18. Stwin.box Core System Board - Power Supply Block Diagram21
Figure 19. Stwin.box Core System Resistors and Solder Bridges (Top View)22
Figure 20. Stwin.box Core System Resistors and Solder Bridges (Bottom View)22
Table 17. Flexible Expansion Connector Pins23
Figure 21. Mapping of the 34-Pin Connector Resources23
How to Assemble the Stwin.box25
Figure 22. Connecting the Core System Board to the Battery25
Figure 23. Stwin.box Core System Board Placed in the Bottom Case26
Figure 24. Stwin.box Assembly27
Figure 25. Stwin.box Mounted with the Plastic Case27
How to Program the Board28
How to Program the Stwin.box in "USB Mode28
Figure 26. Stm32Cubeprogrammer - USB Mode Selection29
Figure 27. Stm32Cubeprogrammer - Connection29
How to Program the Stwin.box with an External Debugger30
Figure 28. Stm32Cubeprogrammer - Programming30
Figure 29. Stwin.box and STLINK-V3MINI Programmer30
Figure 30. Stwin.box, Adapter, and STM32 Nucleo Development Board31
Figure 31. Stwin.box and ST-LINK/V2 Debugger (JTAG 20-Pin 2.54 MM Pitch Connector)31
Default Application33
Figure 32. Stwin.box Antenna33
Figure 33. Firmware Upgrade Procedure34
Schematic Diagrams35
Figure 34. Core System Board Circuit Schematic (1 of 8)35
Figure 35. Core System Board Circuit Schematic (2 of 8)36
Figure 36. Core System Board Circuit Schematic (3 of 8)37
Figure 37. Core System Board Circuit Schematic (4 of 8)38
Figure 38. Core System Board Circuit Schematic (5 of 8)39
Figure 39. Core System Board Circuit Schematic (6 of 8)40
Figure 40. Core System Board Circuit Schematic (7 of 8)41
Figure 41. Core System Board Circuit Schematic (8 of 8)42
Figure 42. Adapter Board Circuit Schematic43
Bill of Materials44
Table 18. STEVAL-STWINBX1 Bill of Materials44
Table 19. Core System Board Bill of Materials44
Table 20. Adapter Board Bill of Materials51
Kit Versions52
Table 21. STEVAL-STWINBX1 Versions52
Regulatory Compliance Information53
Revision History54
Table 22. Document Revision History54
Table of Contents55
List of Tables56
List of Figures57

ST STEVAL-STWINBX1 - Page 24

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