STMicroelectronics STM32G081B-EVAL User Manual
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STMicroelectronics STM32G081B-EVAL User Manual

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UM2403
User manual
Evaluation board with STM32G081RB MCU
Introduction
®
The STM32G081B-EVAL Evaluation board is a high-end development platform for Arm
®
Cortex
-M0+ core-based STM32G081RBT6 microcontroller with USB Type-C™ and Power
Delivery controller interfaces (UCPD) compliant with USB Type-C r1.2 and USB PD
specification r3.0, two I2Cs, two SPIs, five USARTs, one LP UART, one 12-bit ADC, two
12-bit DACs, two GP comparators, two LP timers, internal 32KB SRAM and 128KB Flash,
CEC, SWD debugging support.
The full range of hardware features on the STM32G081B-EVAL Evaluation board includes
the mother board, the legacy peripheral daughterboard and the USB Type-C and Power
Delivery daughterboard, which help to evaluate all peripherals (USB Type-C connector with
USB PD, motor control connector, RS232, RS485, Audio DAC, microphone ADC, TFT LCD,
™
IrDA, IR LED, IR receiver, LDR, microSD
card, CEC on two HDMI connectors, smartcard
slot, RF E2PROM and temperature sensor... etc.) and to develop applications. An ST-
LINK/V2-1 is integrated on the board as embedded in-circuit debugger and programmer for
the STM32 MCU
.
The daughterboard and extension connectors provide an easy way to connect a
daughterboard or wrapping board for your specific application.
The USB Type-C and Power Delivery daughterboard features two independent USB-C ports
controlled by STM32G0. USB-C port 1 is dual role power (DRP) and can provide up-to 45W
of power. USB-C Port 2 is sink only. Both supports USB PD protocol and alternate mode
functionality.
STM32G081B-EVAL board with
STM32G081B-EVAL board with
Figure 1.
Figure 2.
legacy peripheral daughterboard
UCPD daughterboard
Pictures are not contractual.
June 2019
UM2403 Rev 2
1/79
www.st.com
1

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Summary of Contents for STMicroelectronics STM32G081B-EVAL

  • Page 1 12-bit DACs, two GP comparators, two LP timers, internal 32KB SRAM and 128KB Flash, CEC, SWD debugging support. The full range of hardware features on the STM32G081B-EVAL Evaluation board includes the mother board, the legacy peripheral daughterboard and the USB Type-C and Power...

  • Page 2: Table Of Contents

    Contents UM2403 Contents Features ........... 8 Ordering information .
  • Page 3 UM2403 Contents 6.7.2 Temperature sensor ........26 6.7.3 Smartcard .
  • Page 4 Appendix A Electrical schematics ........48 Appendix B STM32G081B-EVAL IO Assignment ......73 Appendix C Federal Communications Commission (FCC) and Industry Canada (IC) Compliance Statements .
  • Page 5 STM32G081B-EVAL IO Assignment ........
  • Page 6 STM32G081B-EVAL extension connectors ........57...
  • Page 7 STM32G081B-EVAL UCPD daughterboard USB PD......70 Figure 51. STM32G081B-EVAL UCPD daughterboard power ......71 Figure 52.

  • Page 8: Features

    Features UM2403 Features Mother board ®(a) ® • STM32G081RBT6 Arm Cortex -M0+ core-based microcontroller with 128 Kbytes of Flash memory and 32 Kbytes of RAM in LQFP64 package • MCU voltage choice fixed 3.3 V or adjustable from 1.65 V to 3.6 V •...
  • Page 9 UM2403 Features Legacy peripheral daughterboard • IrDA transceiver • IR LED and IR receiver • Light dependent resistor (LDR) • Temperature Sensor • Board connectors: – Two HDMI connectors with DDC and CEC – Smartcard slot USB Type-C and Power Delivery daughterboard •...

  • Page 10: Ordering Information

    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.

  • Page 11: Development Environment

    UM2403 Development environment Development environment System requirements ® ® ®(a) • Windows OS (7, 8 and 10), Linux 64-bit or macOS • USB Type-A to Micro-B cable Development toolchains ® • Keil MDK-ARM • IAR™ EWARM • GCC-based IDEs 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.

  • Page 12: Conventions

    Conventions UM2403 Conventions Table 3 provides the conventions used for the ON and OFF settings in the present document. Table 3. ON/OFF convention Convention Definition Jumper JPx ON Jumper fitted Jumper JPx OFF Jumper not fitted Jumper JPx [1-2] Jumper should be fitted between Pin 1 and Pin 2 Solder bridge SBx ON SBx connections closed by 0 Ω...

  • Page 13: Hardware Layout And Configuration

    UM2403 Hardware layout and configuration Hardware layout and configuration The STM32G081B-EVAL Evaluation board is designed around the STM32G081RBT6 (64- pin LQFP package). The hardware block diagram Figure 3 illustrates the connection between STM32G081RBT6 and peripherals (motor control connector, RS232, RS485, Audio DAC, microphone ADC, TFT LCD, CAN, IrDA, IR LED, IR receiver, LDR, MicroSD card, CEC on two HDMI connectors, Smartcard slot, Temperature sensor…...

  • Page 14: Figure 4. Stm32G081B-Eval Evaluation Board Layout

    Hardware layout and configuration UM2403 Figure 4. STM32G081B-EVAL Evaluation board layout 14/79 UM2403 Rev 2...

  • Page 15: Figure 5. Legacy Peripheral Daughterboard

    UM2403 Hardware layout and configuration Figure 5. Legacy peripheral daughterboard Figure 6. USB Type-C and Power Delivery daughterboard UM2403 Rev 2 15/79...

  • Page 16: Embedded St-Link/V2-1

    Windows PC (7, 8 or 10). In case the STM32G081B-EVAL Evaluation board is connected to the PC before the driver is installed, some STM32G081B-EVAL interfaces may be declared as “Unknown” in the PC device manager. In this case, the user must install the driver files, and update the driver of the connected device from the device manager.

  • Page 17: Power Supply

    Hardware layout and configuration Power supply The STM32G081B-EVAL Evaluation mother board is designed to be powered by 5 V DC power supply and is protected by PolyZen from wrong power plug-in event. It is possible to configure the mother board to use any of the following four sources for the power supply: •...

  • Page 18: Figure 8. 5 V Power Structure

    E5V (from PSU) or D5V can be used as external power supply in case current consumption of the STM32G081B-EVAL board exceeds the allowed current on USB. In this condition it is still possible to use USB for communication, for programming or debugging only, but it is mandatory to power the board first using E5V or D5V, and then connecting the USB cable to the PC.

  • Page 19: Table 4. Power Source Related Jumpers

    Consequently the board is not powered (LED LD7 remains OFF). In case the STM32G081B-EVAL board is powered by an USB charger through CN6, there is no USB enumeration needed. User can set JP17 to U5V to allow the board to be powered anyway from CN6.

  • Page 20: Table 5. Low Voltage Limitation

    Note: The UCPD daughterboard works with VDD=3.3V, so it is mandatory to close JP16 pin1 and pin2. The LED LD7 is lit when the STM32G081B-EVAL Evaluation board is powered by the 5V correctly. Table 5 shows the low voltage limitations that might apply depending on the characteristics of some peripheral components.

  • Page 21: Clock References

    PF1 is connected to extension connector CN10 when SB21 is closed. In such case R46 must be removed to avoid disturbance due to the 8Mhz quartz. Reset source The general reset of the STM32G081B-EVAL Evaluation board is active low and the reset sources include: •...

  • Page 22: Boot Option

    6.6.1 Audio The STM32G081B-EVAL Evaluation board supports stereo audio playback and microphone recording by an external headset connected on audio jack CN15. Audio play is connected to DAC output of STM32G081RBT6 through an audio amplifier and microphone on headset is connected to ADC input of STM32G081RBT6 through a microphone amplifier.

  • Page 23: Rs232 And Rs485

    Communication through RS232 (with Hardware flow control CTS and RTS) and RS485 is supported by D-type 9-pins RS232/RS485 connector CN11, which is connected to USART1 of STM32G081RBT6 on STM32G081B-EVAL Evaluation board. The signal Bootloader_RESET (shared with CTS signal) and Bootloader_BOOT0 (shared with DSR signal) are added on RS232 connector CN11 for ISP support.

  • Page 24: Microsd Card

    6.6.5 External I2C Connector The I2C1 bus of the STM32G081RBT6 is connected to CN2 on the STM32G081B-EVAL. The I2C functional daughterboard can be mounted on the CN2 connector and accessed by the microcontroller through the I2C1 bus, it shares same I2C1 bus with Temperature sensor U3 and DDC on HDMI_Source connector CN3 on legacy peripheral daughterboard.

  • Page 25: Motor Control

    VDD. 6.6.6 Motor Control The STM32G081B-EVAL Evaluation board supports both asynchronous and synchronous three-phase brushless motor control via a 34-pins connector CN1, which provides all required control and feedback signals to and from motor power-driving board. Available signals on this connector includes emergency stop, motor speed, 3 phase motor current, bus voltage, power heatsink coming from the motor driving board and 6 channels of PWM control signal going to the motor driving circuit.

  • Page 26: Peripherals On Legacy Peripheral Daughterboard

    The VDD is divided by resistor bridge of LDR VT9ON1 and 8.2 K resistor and connected to PA1 (COM1_IN+/ADC IN1) as shown Figure 9 on STM32G081B-EVAL Evaluation board. Figure 9. GP comparator 1 It's possible to compare LDR output with ¼ band gap, 1/2 band gap, 3/4 band gap, band gap and DAC1 OUT and to connect LDR output to ADC IN1 for AD conversion.

  • Page 27: Smartcard

    5V/3V pin. Smartcard operates correctly when VDD > 2.7 V. 6.7.4 HDMI CEC Two HDMI connectors CN1 and CN3 are available on STM32G081B-EVAL legacy peripheral daughterboard. • The connector CN1 is HDMI sink connector with –...

  • Page 28: Ir Led And Ir Receiver

    USB Type-C and Power Delivery daughterboard The UCPD daughterboard is a development platform composed of STM32G081B-EVAL Evaluation board. This daughterboard is used for demonstrating the functionalities of the USB Type-C and USB Power Delivery (USB PD) technologies, facilitating the users to develop their solutions.

  • Page 29: Power Delivery And Local Power Management

    The UCPD daughterboard has its own external power jack (CN3, 19V/4A input) to support power delivery function and to provide up to 15V/3A on Type-C port1 (CN7). The STM32G081B-EVAL Evaluation board can be powered by D5V from the UCPD daughterboard as shown in Figure 5.

  • Page 30: Vbus Voltage-Sensing And Current-Sense Stage

    Hardware layout and configuration UM2403 Table 18. VBUS Power Delivery profiles Source Solder bridges CN7 role Power level control Voltage control signal setting signal SB2, SB3, SB23, SB26 ON PWM Mode: PD3 High PC1-PWM signal PWM voltage-3A SB13, SB14, SB15 5V: PC1(VSOURCE- Provider 9V) and...

  • Page 31: Table 20. Dead Battery Related Jumpers

    UM2403 Hardware layout and configuration embedded in STM32G081RBT6. When OVP part U17 is bypassed, dead battery function in STM32G081RBT6 can be enable or disable through enable signals by set JP2 (CC1) or JP1 (CC2). Refer to Table 20 for detail. Table 20.

  • Page 32: Connectors

    Connectors UM2403 Connectors Connectors on mother board 7.1.1 Motor control connector CN1 Figure 10. Motor Control connector CN1 (top view) Table 21. Motor control connector CN1 Pin of Pin of Description number of number of Description STM32G081RBT6 STM32G081RBT6 Emergency STOP PB12 PWM-UH PWM-UL PWM-VH...

  • Page 33: External I2C Connector Cn2

    All GPI/Os are available on CN4, CN5 and extension connector CN9, CN10. Each pin on CN4 and CN5 can be used by a daughterboard after disconnecting it from the corresponding function block on STM32G081B-EVAL Evaluation board. Please refer to Table 23 Table 24 for detail.

  • Page 34: Table 23. Daughterboard Connector Cn4

    Connectors UM2403 Table 23. Daughterboard connector CN4 Legacy UCPD How to disconnect with Mother board Signal daughterboard daughterboard function block on mother Function Function (CN5) Function (CN9) board MC_BusVoltage LDR_OUT V_CTL2 Keep JP1 open PA15 Smartcard RST USB3_DET I2C1_SCL I2C1_SCL I2C1_SCL I2C1_SDA I2C1_SDA...

  • Page 35: St-Link/V2-1 Usb Micro-B Connector Cn6

    UM2403 Connectors Table 24. Daughterboard connector CN5 (continued) Legacy UCPD How to disconnect with Mother board Signal daughterboard daughterboard function block on mother Function Function (CN4) Function (CN8) board MC_NTC IR_OUT VCONN_EN2 MC_Current A Smartcard TX FRS_TX1 Smartcard MC_ENINDEX FRS_TX2 CMDVCC Display port MC_ENB...

  • Page 36: St-Link/V2-1 Programming Connector Cn7

    Extension connector CN9 and CN10 Two 22-pin male headers CN9 and CN10 can be used to connect with daughterboard or standard wrapping board to STM32G081B-EVAL Evaluation board. The standard width between CN9 pin1 and CN10 pin1 is 2700mils (68.58mm). The standard was implemented on the majority of Evaluation boards.

  • Page 37: Table 27. Extension Connector Cn9

    UM2403 Connectors Table 27. Extension connector CN9 How to disconnect with function block on Description Alternative Function STM32G081B-EVAL board LED3 Close SB11, Open SB14, SB34 GPIO_JOY_RIGHT Open SB40 PA12 USART_1_RTS Open SB16 GPIO_SD_DETECT Open SB8 LED1 Open SB36 LED2 Open SB35...

  • Page 38: Rs232 And Rs485 Connector Cn11

    Connectors UM2403 Table 28. Extension connector CN10 (continued) How to disconnect with function block on Description Alternative Function STM32G081B-EVAL board PA14-BOOT SWCLK || BOOT0 Open JP9 pin1-2 POTENTIOMETER_ADC_IN10 Open SB43 AUDIO_IN_ADC_IN6/ Open JP4, Keep CN1 disconnected MC_CurrentB AUDIO_OUT_DAC1_OUT1 Open JP6 pin1-2, JP19...

  • Page 39: Standard Swd Connector Cn12

    UM2403 Connectors Table 29. RS232 & RS485 connector CN11 (continued) Pin number Description Description number RS485_A RS485_B 7.1.9 Standard SWD connector CN12 Figure 15. Standard SWD debugging connector CN12 (top view) Table 30. Standard SWD debugging connector CN12 Pin number Description Description number...

  • Page 40: High Density Swd Connector Cn13

    A 3.5mm Stereo audio jack CN15 connected to audio DAC and ADC is available on STM32G081B-EVAL board. 7.1.13 5 V Power connector CN16 STM32G081B-EVAL Evaluation mother board can be powered from a DC 5V power supply via the external power supply jack (CN16) shown in Figure 17. The central pin of CN16 must be positive.

  • Page 41: Analog Input Connector Cn17

    UM2403 Connectors 7.1.14 Analog input connector CN17 Figure 18. Analog input-output connector CN17 (top view) Table 32. Analog input-output connector CN17 Pin number Description Description number Analog input-output PB2 Connectors on legacy peripheral daughterboard 7.2.1 HDMI sink connector CN1 Figure 19. HDMI sink connector CN1 (front view) Table 33.

  • Page 42: Smartcard Connector Cn2

    Connectors UM2403 7.2.2 Smartcard connector CN2 Figure 20. Smartcard connector CN2 (top view) Table 34. Smartcard connector CN2 Pin number Description Description number Card presence detection pin Card presence detection pin 42/79 UM2403 Rev 2...

  • Page 43: Hdmi Source Connector Cn3

    UM2403 Connectors 7.2.3 HDMI source connector CN3 Figure 21. HDMI source connector CN3 (front view) Table 35. HDMI source connector CN3 Pin number Description Pin number Description TMDS differential signal pair 1,3,4,6,7,9,10,12 I2C1_SDA (PB7) connected to CN1 CEC (PB10) 2,5,8,11,17 HDMI_5V_Source from power switch U3 I2C1_SCL (PB6)

  • Page 44: Displayport Source Connector Cn2

    Connectors UM2403 7.3.2 DisplayPort source connector CN2 Figure 23. DisplayPort source connector CN2 (front view) Table 37. DisplayPort source connector CN2 Pin number Description Pin number Description LANE0_P CONFIG1 LANE0_N CONFIG2 LANE1_P AUX_CH_P LANE1_N AUX_CH_N LANE2_P HPD (PC6) LANE2_N RETURN LANE3_P DP_PWR LANE3_N...

  • Page 45: Usb3.1 Gen1 Type B Connector Cn4

    UM2403 Connectors 7.3.4 USB3.1 Gen1 Type B connector CN4 Figure 25. USB3.1 Gen1 Type B connector CN4 (front view) Table 38. USB3.1 Gen1 Type B connector CN4 Pin number Description Pin number Description VBUS (power) SSTX- SSTX+ GND_DRAIN SSRX- SSRX+ 7.3.5 USB Type-C connector PORT2 CN5 Figure 26.

  • Page 46: Display Port Sink Connector Cn6

    Connectors UM2403 Table 39. USB Type-C connector PORT2 CN5 (continued) Pin number Description Pin number Description SBU1 SBU2 VBUS VBUS RX2- RX1- RX2+ RX1+ 7.3.6 Display port sink connector CN6 Figure 27. DisplayPort sink connector CN6 (front view) Table 40. DisplayPort sink connector CN6 Pin number Description Pin number...

  • Page 47: Usb Type-C Connector Port1 Cn7

    UM2403 Connectors 7.3.7 USB Type-C connector PORT1 CN7 Figure 28. USB Type-C connector PORT1 CN7 (front view) Table 41. USB Type-C connector PORT1 CN7 Pin number Description Pin number Description TX1+ TX2+ TX1- TX2- VBUS VBUS CC1 (PA8) CC2 (PB15) SBU1 SBU2 VBUS...

  • Page 48: Appendix A Electrical Schematics

    Electrical schematics UM2403 Appendix A Electrical schematics This chapter provides design schematics for the STM32G081B-EVAL key features to help users to implement these features in application designs: • Figure 29: STM32G081B-EVAL mother board top on page 49 • Figure 30: STM32G081B-EVAL MCU on page 50 •...
  • Page 49 Figure 29. STM32G081B-EVAL mother board top U_Extension connectors U_MCU U_Motor Control Extension connectors.SchDoc MCU.SchDoc Motor Control.SchDoc PA[0..15] PA[0..15] MC_PFCsync1 MC_PFCsync1 PB[0..15] PB[0..15] MC_PFCsync2 MC_PFCsync2 PC[0..15] PC[0..15] MC_UL MC_UL PD[0..6] PD[0..6] MC_UH MC_UH PD[8..9] PD[8..9] MC_VL MC_VL PF[0..4] PF[0..4] MC_VH MC_VH...
  • Page 50 Figure 30. STM32G081B-EVAL MCU JOY_SEL EX_RESET_OD PA[0..15] MC_BusVoltage MC_PFCsync1 PA[0..15] MC_CurrentA JOY_UP PB[0..15] MC_HeatsinkTemperature JOY_DOWN PB[0..15] Audio_OUT_L USART1_TX PC[0..15] Audio_OUT_R USART1_RX PC[0..15] Audio_IN MC_EnA PD[0..6] MC_CurrentB SPI1_MOSI JOY_RIGHT PD[0..6] USART1_TX_BOOT MC_UH JOY_LEFT PD[8..9] MC_VH SDcard_detect PD[8..9] PA10 PC10 MC_WH PA10...
  • Page 51 Figure 31. STM32G081B-EVAL power [N/A] ZEN056V130A24LS ST1L05BPUR +3V3_PG +3V3 CN16 +3V3 Power Supply 3.3V 220uF ESDA7P60-1U1M 20.5K[1%] Vout=1.22*(1+R1/R2) DC-10B 4.7uF 100nF BNX002-01 [N/A] 10uF[ESR<0.2ohm] 100nF 11.8K[1%] JP17 TP10 VUSB_ST_LINK [N/A] green ST1L05BPUR VDD_PG VDD_ADJ U5V_ST_LINK VDD_ADJ Header 4X2 +3V3_PG [N/A] Power Supply VDD_ADJ [1.65V to 3.5V]...
  • Page 52 Figure 32. STM32G081B-EVAL audio VDD_ANA>2.2V VDD_ANA CN15 1.5nF JP18 R108 Left 4.7K Default setting: close 220uF Right Microphone PJ3028B-3 JP19 Shutdown VOUT1 VDD_ANA Audio_OUT_L VIN1 VOUT2 VIN2 330nF Bypass ESDA6V1BC6 100nF [N/A] TS488IQT Audio_OUT_R 330nF 220uF [N/A] 1.5nF 4.7K VDD_ANA VDD_ANA>2.7V...
  • Page 53 Figure 33. STM32G081B-EVAL LCD microSD SDcard_detect SB12 DAT1_IN DAT1_EX SPI1_MISO_3V3 DAT0_IN DAT0_EX CLK_IN CLK_EX SPI1_SCK_3V3 CMD_IN CMD_EX SCLK DAT3_IN DAT3_EX +3V3_SD SPI1_MOSI_3V3 DAT2_IN DAT2_EX MicroSD_CS_3V3 RDAT3_GND WP/CD RDATA_VCC +3V3_SD Open drain pin! EMIF06-MSD02N16 SB15 PJS008-2000 (SMS064FF or SMS128FF) +3V3_SD SPI MICRO SD...
  • Page 54 Figure 34. STM32G081B-EVAL motor-control +3V3 Motor control connector 3.3K PB12 MC_EmergencySTOP EMERGENCY STOP MC_UH MC-UH Default setting: Open MC_UL MC_UL MC_VH MC_VH MC_VL MC_VL PA10 MC_WH MC_WH MC_WL MC_WL BUS VOLTAGE MC_BusVoltage MC_CurrentA CURRENT A Default setting: Open CURRENT B...
  • Page 55 Figure 35. STM32G081B-EVAL peripherals +3V3 Green SB36 VDD<2.7V R104 IOs and some Analog IPs will work with degraded performances LED1 +3V3 Orange SB35 R103 LED2 +3V3 +3V3 Orange SB34 R102 LED3 U19A two pin header for external analog input VDD_ANA...
  • Page 56 Figure 36. STM32G081B-EVAL RS232 and RS485 CN11 +3V3 DB9-male USART1 100nF +3V3 SB29 R77 22K 100nF USART1_RTS_3V3 RS485_DIR R85 22K 100nF 100nF SB31 ST3485EBDR USART1_RTS_3V3 100nF T1IN T1OUT T2IN T2OUT SB32 T3IN T3OUT connector for USART1 & RS485 R1OUTB 100nF...
  • Page 57 Figure 37. STM32G081B-EVAL extension connectors Daugher board connectors PA[0..15] PA[0..15] PB[0..15] PB[0..15] USB-C daugher board signal Legacy daugher board signal Legacy daugher board signal USB-C daugher board signal PC[0..15] PC[0..15] V_CTRL2 LDR_OUT PORT1_CC1 PD[0..6] PA15 USB3_DET SMART_RST SMART_3/5V PORT1_CC2 PB15 PD[0..6]...
  • Page 58 Figure 38. STM32G081B-EVAL ST-LINK V2-1 +3V3_ST_LINK BAT60JFILM 2.7K 4.7K BAT60JFILM LDK120M33R +3V3_ST_LINK BAT60JFILM VUSB_ST_LINK Vout 100nF 100nF 100nF 100nF +3V3_ST_LINK BAT60JFILM BYPASS 1uF_X5R_0603 1uF_X5R_0603 100K +3V3_ST_LINK 100nF 10nF_X7R_0603 100nF Board Ident: PC13=0 U4 can be replaced by LD3985M33R STM32F103CBT6 +3V3_ST_LINK...
  • Page 59 Figure 39. STM32G081B-EVAL SWD [N/A] [N/A] PA13 SWDAT PA14 SWCLK RESET# ESDALC6V1W5 CN13 CN12 FTSH-105-01-L-DV [N/A] High Density SWD connector Standard SWD connector Title: Project: STM32G081B-EVAL Mother board Variant: Variant name is not interpreted until output Revision: B 01 Reference:...
  • Page 60 Figure 40. STM32G081B-EVAL legacy peripheral daughterboard U_SmartCard_IR U_HDMI_CEC SmartCard_IR.SchDoc HDMI_CEC.SchDoc SmartCard_CLK HDMI_HPD_Source_5V SmartCard_CLK HDMI_HPD_Source_5V SmartCard_IO HDMI_HPD_SINK SmartCard_IO HDMI_HPD_SINK SmartCard_CMDVCC HDMI_CEC_3V3 SmartCard_CMDVCC HDMI_CEC_3V3 SmartCard_3/5V SmartCard_3/5V SmartCard_1V8 I2C1_SCL_5V SmartCard_1V8 I2C1_SCL_5V SmartCard_RST I2C1_SDA_5V SmartCard_RST I2C1_SDA_5V SmartCard_OFF SmartCard_OFF I2C2_SCL_5V I2C2_SCL_5V IR_IN I2C2_SDA_5V IR_IN I2C2_SDA_5V...
  • Page 61 Figure 41. STM32G081B-EVAL legacy peripheral daughterboard HDMI and CEC FAULT HDMI_5V_Source Sink Source STMPS2141STR@54 4.7uF HDMI_5V_Sink TMDS_Data2+ HD119F-3A09200 HD119F-3A09200 TMDS_Data2- TMDS_Data1+ TMDS_Data1- TMDS_Data0+ TMDS_Data0- TMDS_Clock+ TMDS_Clock- HDMI_5V_Sink HDMI_HPD_Source_5V 9012 HDMI_HPD_SINK 2N7002 FT pin & Open Drain mode needed 1.8K 1.8K...
  • Page 62 Figure 42. STM32G081B-EVAL legacy peripheral daughterboard Smartcard and IR Smart Card +3V3 VDD>2.7V IR_LED SFH409-2 4.7K PB15 SmartCard_3/5V AUX2 CLKDIV1 AUX2UC CLKDIV2 AUX1UC AUX1 5V/3V I/OUC SmartCard_IO PGND XTAL2 100nF XTAL1 SmartCard_CLK IR_OUT PB12 Vddp SmartCard_OFF 100nF 47uF 100nF PRES...
  • Page 63 Figure 43. STM32G081B-EVAL legacy peripheral daughterboard temperature sensor and LDR I2C1_SDA_5V I2C1_SCL_5V TempSensor_INT OS/INT STLM75M2F 100nF Temperature sensor Address:100100(A0) LDR_OUT VDD_ANA 8.2K VT9ON1 Photo resistor Title: TemSensor_LDR Project: STM32G081B-EVAL Legacy peripheral daughter board Variant: Variant name is not interpreted until output...
  • Page 64 Figure 44. STM32G081B-EVAL UCPD daughterboard top R107 R106 U_CC & VCONN U_PORT1_DP_USB3 CC & VCONN.SchDoc PORT1_DP_USB3.SchDoc PORT1_CC1 HPDIN PORT1_CC1 CON1_CC1 1_CC1 HPDIN PORT1_CC2 USB3_DET PORT1_CC2 CON1_CC2 1_CC2 USB3_DET PORT1_DB1 I2C_SCL PORT1_DB1 I2C_SCL PORT1_DB2 I2C_SDA PORT1_DB2 I2C_SDA VCONN_EN1 VCONN_EN1 VCONN_EN2 CON1_D+...
  • Page 65 Figure 45. STM32G081B-EVAL UCPD daughterboard CC and VCONN 0.5A VCONN_OUT TYPE-C Source port CC management FAULT FAULT open-drain 10K[N/A] STMPS2161STR STMPS2161STR VCONN_EN1 VCONN_EN1 open-drain 10K[N/A] BAT60JFILM VCONN_EN2 BAT60JFILM VCONN_EN2 FDV303N PORT1_CC1 CON1_CC1 FDV303N PORT1_CC2 CON1_CC2 FDV303N FDV303N PORT1_DB1 FRS_TX1 FRS_TX2...
  • Page 66 Figure 46. STM32G081B-EVAL UCPD daughterboard port1 DP USB3 Differential pairs 90ohm SB60 CON1_D- DP sink & USB3.0 (Port1) SB61 CON1_D+ U_TYPEC_SOURCE_CON TYPEC_SOURCE_CON.SchDoc USB3_DET SB62 C1_D- SB63 VBUS C1_D+ C1_RX1+ C1_RX1- Differential pairs 90ohm C1_TX1+ C1_TX1- SSTX- 100nF Differential pairs 90ohm...
  • Page 67 Figure 47. STM32G081B-EVAL UCPD daughterboard Type-C source con C1_CC1 SB56 1_CC1 C1_CC2 SB57 1_CC2 C1_SBU1 SB58 1_SBU1 C1_SBU2 SB53 1_SBU2 TYPE-C DRP port (Port1) ESDA25SC6[N/A] VBUS1 SB27 SB28 C112 SB54 SB21 1_CC1 RPD_G1 1_CC1 SB55 SB22 1_CC2 RPD_G2 1_CC2 Differential pairs 90ohm...
  • Page 68 Figure 48. STM32G081B-EVAL UCPD daughterboard port2 DP DP source (Port2) U_TYPEC_SINK_CON Differential pairs 90ohm TYPEC_SINK_CON.SchDoc C2_RX1+ Differential pairs 100ohm C2_RX1+ OP1+ IP1+ C2_RX1- L0_P_2 C2_RX1- OP1- IP1- ML_LANE0_P Differential pairs 100ohm C2_RX2+ 100nF 100nF L0_N_2 C2_RX2+ OP2+ IP2+ IN0_P OUT0_P...
  • Page 69 Figure 49. STM32G081B-EVAL UCPD daughterboard Type-C sink con C2_CC1 SB44 PORT2_CC1 C2_CC2 SB45 PORT2_CC2 C2_SBU1 SB41 2_SBU1 TYPE-C Sink port (Port2) C2_SBU2 SB42 2_SBU2 ESDA25SC6[N/A] VBUS2 SB17 SB16 C110 SB50 SB52 PORT2_CC1 RPD_G1 PORT2_CC1 Differential pairs 90ohm SB49 SB51 PORT2_CC2...
  • Page 70 Figure 50. STM32G081B-EVAL UCPD daughterboard USB PD Power Delivery management (TypeC Port1) LOCAL_PWR1 VSOURCE LOCAL_PWR1 VBUS1 CN11 0.005[1%] +3V3 +3V3 MPT 0.5/2-2.54 1K/0.5W 1K/0.5W 1K/0.5W 1K/0.5W 100nF INA199C1DCKR STL9P3LLH6 220nF[N/A] STL9P3LLH6 100nF ISENSE_1 49.9K[1%] STL6N2VH5 SB35 DISCHARGE_1 49.9K[1%] TSV911ILT +3V3 49.9K...
  • Page 71 Figure 51. STM32G081B-EVAL UCPD daughterboard power Power jack input Local power selection LOCAL_PWR2 R125 STPS2L30A[N/A] D3: Backup footprint 220uF/50V LOCAL_PWR1 DC-094 SMAJ20A-TR 100nF/50V BNX002-01 STPS2L30A Green STL9P3LLH6 Ground Ground D5V power SB37 47uH(MSS1246T-473MLB) SYNCH STPS3L40S 7.5nF/50V 33uF(TPS83360160500) SMAJ5.0A-TR 3.3uF/50V 220nF/50V[N/A] 4.99K...
  • Page 72 Figure 52. STM32G081B-EVAL UCPD daughterboard source power Source Power R110 100nF 4.7uH(SRN8040-4R7Y) VSOURCE BOOT R127 R111 DCDC_EN 220K[1%] COMP 200K[1%] SB26 [N/A] C109 +3V3 [N/A] RT/CLK 51.1K B540C-13-F 68pF/50V TPS54540 330K[1%] 3K[1%] 93.1K[1%] 11pF/50V C108 100nF [N/A] TSV911ILT VSENSE_DCDC 750pF/50V VSENSE_DCDC: 49.9K[1%]...

  • Page 73: Appendix B Stm32G081B-Eval Io Assignment

    UM2403 STM32G081B-EVAL IO Assignment Appendix B STM32G081B-EVAL IO Assignment Table 42. STM32G081B-EVAL IO Assignment IO Assignment on mother IO Assignment on IO Assignment on UCPD Pin Name board legacy daughterboard daughterboard PC11 VCP_USART_3_RX PC12 GPIO_LCD / SD_MOSI_DIR KEY_TAMP_IN1, RTC_TS, PC13...
  • Page 74 STM32G081B-EVAL IO Assignment UM2403 Table 42. STM32G081B-EVAL IO Assignment (continued) IO Assignment on mother IO Assignment on IO Assignment on UCPD Pin Name board legacy daughterboard daughterboard LCD/SD1_MOSI USART_1_TX USART_1_RX MC_TIM_3_CH3(Encoder GPIO_SMART_CMDVCC TYPE-C_1_FRSTX index) MC_TIM_3_CH4(PFC_PWM) - TYPE-C_1_V_ADC_IN9 POT_ADC_IN10 PB10 MC_ADC_IN11(CurrentC)
  • Page 75 UM2403 STM32G081B-EVAL IO Assignment Table 42. STM32G081B-EVAL IO Assignment (continued) IO Assignment on mother IO Assignment on IO Assignment on UCPD Pin Name board legacy daughterboard daughterboard GPIO_SD_CS MC_TIM_1_CH1N(UL) GPIO_HDMI_HPD_SINK TYPE-C_2_CC2 GPIO_HDMI_HPD_SOUR MC_TIM_1_CH2N(VL) GPIO_SOURCE_EN MC_TIM_1_CH3N(WL) SMART_2_RTS_DE_CK GPIO_VCONN_EN_1_1 LED1 LED2 LCD/SD1_SCK...

  • Page 76: Appendix C Federal Communications Commission (Fcc) And Industry Canada (Ic) Compliance Statements

    C.1.3 Part 15.21 Any changes or modifications to this equipment not expressly approved by STMicroelectronics may cause harmful interference and void the user's authority to operate this equipment. IC Compliance Statement C.2.1 Compliance Statement Industry Canada ICES-003 Compliance Label: CAN ICES-3 (A)/NMB-3(A).

  • Page 77: Appendix D Mechanical Dimensions

    UM2403 Mechanical dimensions Appendix D Mechanical dimensions Figure 53. Mechanical dimensions Table 43. Mechanical dimensions Symbol Size (mm) Symbol Size (mm) Symbol Size (mm) 68.58 77.44 111.76 61.97 10.41 2.54 5.715 24.12 5.715 17.70 19.08 23.81 114.3 65.78 172.72 UM2403 Rev 2 77/79...

  • Page 78: Revision History

    Revision history UM2403 Revision history Table 44. Document revision history Date Revision Changes 7-Nov-2018 Initial version 3-Jun-2019 Updated Figure 32: STM32G081B-EVAL audio 78/79 UM2403 Rev 2...
  • Page 79 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders.

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