SF32LB56-DevKit-LCD Development Board User Guide

Overview of the Development Board

The SF32LB56-DevKit-LCD is a development board based on the SF32LB56xV series module, primarily used for developing various applications with displays that use MIPI-DPI/SPI/DSPI/QSPI or MIPI-DBI(MCU/8080) interfaces.

The development board also features an analog MIC input, analog audio output, SDIO interface, USB-C interface, and supports TF cards, providing developers with a rich set of hardware interfaces. This helps developers simplify the hardware development process and reduce the time to market for their products.

The appearance of the SF32LB56_DevKit-LCD is shown in Figure 1 and Figure 2.

../../_images/SF32LB56x-DevKit-LCD_Front_Look.png
Figure 1: SF32LB56_DevKit-LCD Development Board - Front View



../../_images/SF32LB56x_DevKit-LCD_Back_Look.png
Figure 2: SF32LB56_DevKit-LCD Development Board - Back View



Feature List

The development board has the following features:

  1. Module: Equipped with the SF32LB56-MOD-A128R12N1 module based on the SF32LB56xV chip, with the following configuration:

    • Standard configuration: SF32LB566VCB36 chip, with the following integrated components:

      • 8MB OPI-PSRAM, interface frequency 144MHz (subject to change upon official release)

      • 4MB OPI-PSRAM, interface frequency 144MHz (subject to change upon official release)

    • 1Gb QSPI-Nand Flash, interface frequency 72MHz, STR mode (subject to change upon official release)

    • 48MHz crystal

    • 32.768KHz crystal

    • On-board antenna or IPEX antenna connector, selectable via 0Ω resistor, default is on-board antenna

    • RF matching network and other passive components

  2. Dedicated screen interfaces

    • MIPI-DPI, supports 40-pin FPC connector for the Olimex 40-pin pinout

    • SPI/DSPI/QSPI, supports DDR mode QSPI, exposed via 40-pin header

    • 8bit MCU/8080, exposed via 40-pin header

    • Supports I2C interface touch screen

  3. Audio

    • Supports analog MIC input

    • Analog audio output, with on-board Class-D audio PA

  4. USB

    • Type C interface, supports on-board USB to UART chip for program download and software debugging, can provide power

    • Type C interface, supports USB2.0 FS, can provide power

  5. SD Card

    • Supports SDIO interface TF card, with on-board Micro SD card slot

Functional Block Diagram

../../_images/SF32LB56x_DevKit-LCD_Block_Diagram.png
Figure 3: Development Board Functional Block Diagram



Component Introduction

The main board of the SF32LB56-DevKit-LCD development board is the core of the entire kit. This main board integrates the SF32LB56-MOD-A128R12N1 module and provides an MIPI-DPI (RGB-24bit) LCD connector.

../../_images/56KIT-LCD-T-Notes.png
Figure 3: SF32LB56-DevKit-LCD Board - Front (Click to Enlarge)



../../_images/56KIT-LCD-B-Notes.png
Figure 4: SF32LB56-DevKit-LCD Board - Back (Click to Enlarge)



Application Development

This section mainly introduces the setup methods for hardware and software, as well as the instructions for burning firmware to the development board and developing applications.

Required Hardware

  • 1 x SF32LB56-DevKit-LCD (including SF32LB56-MOD-A128R12N1 module)

  • 1 x Screen module

  • 1 x USB2.0 data cable (Standard A to Type-C)

  • 1 x SWD debugger

  • 1 x Computer (Windows, Linux, or macOS)

Note

  1. If you need to use both UART debugging and the USB interface, you will need two USB2.0 data cables;

  2. Ensure you use the appropriate USB data cable, as some cables are only suitable for charging and cannot be used for data transfer or firmware burning.

Optional Hardware

  • 1 x Speaker

  • 1 x TF Card

  • 1 x 450mAh Lithium Battery

Hardware Setup

Prepare the development board and load the first example application:

  1. Connect the screen module to the corresponding LCD connector interface;

  2. Open the SifliTrace tool software from Sicheng, and select the correct COM port;

  3. Insert the USB data cable to connect the PC to the USB to UART port of the development board;

  4. The screen should light up, and you can interact with the touch screen using your fingers.

Once the hardware setup is complete, you can proceed to the software setup.

Software Setup

For the SF32LB56-DevKit-LCD development board, refer to the relevant software documentation for a quick setup of the development environment.

Hardware Reference

This section provides more information about the hardware of the development board.

GPIO Allocation List

The table below lists the GPIO allocation for the SF32LB56-MOD-A128R12N1 module, used to control specific components or functions of the development board.

SF32LB56-MOD-A128R12N1 GPIO Allocation

Pin

Pin Name

Function

1

GND

Ground

2

PB_22

Touchscreen reset signal

3

PA_47

MIPI-DPI(RGB) DE, LCD interface signal

4

PA_42

MIPI-DPI(RGB) VSYNC, LCD interface signal

5

PA_44

MIPI-DPI(RGB) HSYNC, LCD interface signal

6

PB_17

UART4_TXD, default print port of BOOTROM and small core software debugging interface

7

PB_16

UART4_RXD, default print port of BOOTROM and small core software debugging interface

8

PA_45

MIPI-DPI(RGB) CLK, LCD interface signal

9

PA_46

MIPI-DPI(RGB) B7, LCD interface signal

10

PA_18

USB_DM

11

PA_17

USB_DP

12

PA_40

MIPI-DPI(RGB) B6, MCU 8080 DIO0, QSPI DIO2, E-Paper SDI, LCD interface signal

13

PA_39

MIPI-DPI(RGB) B5, MCU 8080 DC, QSPI DIO1, E-Paper DC, LCD interface signal

14

PB_32

HOME and long press reset button

15

PA_51

Touchscreen interrupt INT

16

PA_41

MIPI-DPI(RGB) B4, MCU 8080 DIO1, QSPI DIO3, LCD interface signal

17

PA_43

MIPI-DPI(RGB) B3, LCD interface signal

18

PA_38

MIPI-DPI(RGB) B2, MCU 8080 RD, QSPI DIO0, LCD interface signal

19

PA_37

MIPI-DPI(RGB) B1, MCU 8080 WR, QSPI CLK, E-Paper CLK, LCD interface signal

20

PA_36

MIPI-DPI(RGB) B0, MCU 8080 CS, QSPI CS, E-Paper CS, LCD interface signal

21

PA_35

MIPI-DPI(RGB) G7, LCD interface signal

22

PA_31

MIPI-DPI(RGB) G6, MCU 8080 DIO5, LCD interface signal

23

PA_29

MIPI-DPI(RGB) G5, MCU 8080 DIO3, LCD interface signal

24

PA_34

MIPI-DPI(RGB) G4, MCU 8080 DIO7, LCD interface signal

25

BOOT_MODE

BOOT_MODE signal, =1 download mode; =0 user program mode

26

VDD

Main power input, 2.97~3.63V

27

VDDSIP

Package-integrated storage power input, 1.71~1.92V

28

GND

Ground

29

VDDIO

GPIO power input, 1.71~3.63V

30

PA_01

Touchscreen I2C_SCL

31

PA_02

Touchscreen I2C_SDA

32

PA_03

UART1_TXD, large core debugging serial port

33

PA_04

UART1_RXD, large core debugging serial port

34

PA_15

SD1_DIO1, SD card interface signal

35

PA_22

SD1_DIO0, SD card interface signal

36

PA_27

SD1_CMD, SD card interface signal

37

PA_26

SD1_CLK, SD card interface signal

38

PA_20

SD1_DIO3, SD card interface signal

39

PA_12

SD1_DIO2, SD card interface signal

40

PA_33

MIPI-DPI(RGB) G3, MCU 8080 TE, QSPI TE, E-Paper BUSY, LCD interface signal

41

PA_32

MIPI-DPI(RGB) G2, MCU 8080 DIO6, LCD interface signal

42

GND

Ground

43

AU_DAC1P_OUT

Analog audio output signal

44

AU_DAC1N_OUT

Analog audio output signal

45

GND

Ground

46

MIC_BIAS

MIC bias voltage

47

MIC_ADC_IN

MIC input signal

48

PA_50

RSTB, LCD interface signal

49

PA_30

MIPI-DPI(RGB) G1, MCU 8080 DIO4, LCD interface signal

50

PA_28

MIPI-DPI(RGB) G0, MCU 8080 DIO2, LCD interface signal

51

PA_25

MIPI-DPI(RGB) R7, LCD interface signal

52

PA_23

MIPI-DPI(RGB) R6, LCD interface signal

53

PA_21

MIPI-DPI(RGB) R5, LCD interface signal

54

PA_19

MIPI-DPI(RGB) R4, LCD interface signal

55

PA_24

MIPI-DPI(RGB) R3, LCD interface signal

56

PA_16

MIPI-DPI(RGB) R2, LCD interface signal

57

PA_13

MIPI-DPI(RGB) R1, LCD interface signal

58

PA_14

MIPI-DPI(RGB) R0, LCD interface signal

59

PB_23

BL PWM, LCD interface signal

60

GND

Ground

61

PB_12

VBUS_DET, USB plug detection

62

PB_11

GPIO LED control signal

63

PB_09

GPIO control signal for RGBLED

64

PB_08

GPIO

65

PB_35

KEY, function button

66

PA_76

SD card slot insertion detection interface signal

67

PA_06

MPI3_CS, SD2_DIO2, I2S1_MCLK, module internal Nor Flash interface signal, not available externally when the module supports Nor Flash

68

PA_07

MPI3_DIO1, SD2_DIO3, I2S1_SDI, module internal Nor Flash interface signal, not available externally when the module supports Nor Flash

69

PA_08

MPI3_DIO2, SD2_CLK, I2S1_SDO, module internal Nor Flash interface signal, not available externally when the module supports Nor Flash

70

PA_09

MPI3_DIO0, SD2_CMD, I2S1_BCK, module internal Nor Flash interface signal, not available externally when the module supports Nor Flash

71

PA_10

MPI3_CLK, SD2_DIO0, I2S1_LRCK, module internal Nor Flash interface signal, not available externally when the module supports Nor Flash

72

PA_11

MPI3_DIO3, SD2_DIO1, module internal Nor Flash interface signal, not available externally when the module supports Nor Flash

73

GND

Ground

74

GND

Ground

76

GND

Ground

77

GND

Ground

78

GND

Ground

79

PB_13

SWDIO, SWD interface signal

80

PB_15

SWCLK, SWD interface signal

81

PB_18

SPI3_CS, RGB screen SPI interface, GPIO interface signal for WIFI

82

PB_19

SPI3_CLK, RGB screen SPI interface, GPIO interface signal for WIFI

83

PB_20

SPI3_DI, used as GPIO enable signal for audio amplifier

84

PB_21

SPI3_DO, RGB screen SPI interface, GPIO interface signal for WIFI

85

PA_69

SPI2_DI, I2S1_SDI, PDM1_CLK, used as SPI interface signal for WIFI

86

PA_64

SPI2_DO, I2S1_SDO, PDM1_DAT, used as SPI interface signal for WIFI

87

PA_73

SPI2_CLK, I2S1_BCK, PDM2_CLK, used as SPI interface signal for WIFI

88

PA_71

SPI2_CS, I2S1_LRCK, PDM2_DAT, used as SPI interface signal for WIFI

89

PA_65

GPIO, I2S1_MCLK

40P Pin Header Interface Definition

../../_images/SF32LB56x_DevKit-40p-define.svg
Figure 5: 40p Pin Header Interface Definition on the Development Board (Click to Enlarge)



40p RGB FPC Interface Definition

Compatible with the 40pin FPC Interface of Olimex

RGB-FPC-J0100 Signal Definition

Pin

Pin Name

Function

1

5V

5V Power Output

2

5V

5V Power Output

3

R0

PA_14，LCDC1_DPI_R0                                    

4

R1

PA_13，LCDC1_DPI_R1

5

R2

PA_16，LCDC1_DPI_R2

6

R3

PA_24，LCDC1_DPI_R3

7

R4

PA_19，LCDC1_DPI_R4

8

R5

PA_21，LCDC1_DPI_R5

9

R6

PA_23，LCDC1_DPI_R6

10

R7

PA_25，LCDC1_DPI_R7

11

GND

Ground

12

G0

PA_28，LCDC1_DPI_G0

13

G1

PA_30，LCDC1_DPI_G1

14

G2

PA_32，LCDC1_DPI_G2

15

G3

PA_33，LCDC1_DPI_G3

16

G4

PA_34，LCDC1_DPI_G4

17

G5

PA_29，LCDC1_DPI_G5

18

G6

PA_31，LCDC1_DPI_G6

19

G7

PA_35，LCDC1_DPI_G7

20

GND

Ground

21

B0

PA_36，LCDC1_DPI_B0

22

B1

PA_37，LCDC1_DPI_B1

23

B2

PA_38，LCDC1_DPI_B2

24

B3

PA_43，LCDC1_DPI_B3

25

B4

PA_41，LCDC1_DPI_B4

26

B5

PA_39，LCDC1_DPI_B5

27

B6

PA_40，LCDC1_DPI_B6

28

B7

PA_46，LCDC1_DPI_B7

29

GND

Ground

30

CLK

PA_45，LCDC1_DPI_CLK

31

HSYNC

PA_44，LCDC1_DPI_HSYNC

32

VSYNC

PA_42，LCDC1_DPI_VSYNC

33

DE

PA_47，LCDC1_DPI_DE

34

BL

PB_23，BL_PWM

35

CTP_RST

PB_22

36

CTP_SDA

PA_02，I2C4_SDA

37

NC

-

38

CTP_SCL

PA_01，I2C4_SCL

39

CTP_INT

PA_51

40

RESET

PA_50

Power Supply Description

The SF32LB56-DevKit-LCD development board is powered through the USB Type-C interface. Both USB Type-C interfaces on the board can power the board. For downloading and debugging, please use the USB-to-UART port.

Firmware Burning and Testing

Firmware Burning Tool Impeller Download

Connect the USB-to-UART port with a USB cable, open the firmware download tool provided by Sifli, and select the corresponding COM port and program.

  1. Download Mode

  • Insert the Mode jumper cap, power on, and the board will enter download mode, allowing the program to be downloaded.

  1. Software Development Mode

  • Remove the Mode jumper cap, power on, and the board will enter serial log print mode, allowing software debugging.

For more details, please refer to Firmware Burning Tool Impeller

Sample Acquisition

Retail samples and small quantities can be purchased directly from Taobao. For bulk orders, please send an email to sales@sifli.com or contact customer service on Taobao for sales information. Open source contributors can apply for free samples by joining QQ group 674699679 for communication.