Surenoo SRG0700C RGB Series Display User Manual

: October 30, 2023
: Surenoo

Table of Contents

Surenoo SRG0700C RGB Series Display
Product Information
Product Features
Product Parameters
Interface Description
Product Usage Instructions
Product Description
Hardware Configuration
working principle
Instructions for use
Software Description
Common software
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Surenoo SRG0700C RGB Series Display

Surenoo-SRG0700C-RGB-Series-Display-PRODUCT

Product Information

The SRG0700C RGB Series Display is a 7-inch color screen that supports 24BIT RGB 16.7M color display, allowing for rich colors. It supports 800×480 and 1024×600 resolution screen switching, providing a clear display effect. The display module is compatible with punctual atomic development board and wildfire development board, connecting with the development board through a 40 pin flexible cable. The module uses capacitive touch screen technology to support 5 touch points and provides a rich sample program for STM32 platforms. It meets military-grade process standards and has long-term stable work capabilities.

Product Features

7.0-inch color screen
Supports 24BIT RGB 16.7M color display
Supports 800×480 and 1024×600 resolution screen switching
Supports 24-bit RGB parallel bus transmission
Compatible with RGB interface connection of punctual atomic development board and wildfire development board
Uses a capacitive touch screen to support 5 touch points
Provides a rich sample program for STM32 platforms
Military-grade process standards, long-term stable work
Provides underlying driver technical support

Product Parameters

Name	Description
Display Color SKU	RGB888 16.7M (Compatible with RGB5665K) Color
Screen Size	7.0(inch)
Type	TFT / IPS
Driver IC	None
Resolution	800*480 or 1024×600 (Pixel)
Module Interface	24Bit RGB Parallel Interface
Touch Screen Type	Capacitive Touch Screen
Touch IC Active Area	FT5426 800×480: 153.84×85.63(mm) 1024×600:

154.21×85.92(mm)
Module PCB Size| 164.90×124.27(mm)
Operating Temperature| -10~60
Storage Temperature| -20~70
Input Voltage| 5V
IO Voltage| 3.3V
Power Consumption| 67mA(The Backlight is Off) 800×480 467mA(The Backlight is the
Brightest) 1024×600 104mA(The Backlight is Off) 310mA(The Backlight
is the Brightest)
Product Weight (Net Weight)| 236g

Interface Description

The module is connected with the development board through a 40 pin flexible cable. It is compatible with the RGB interface of punctual atomic development board and wildfire development board. The front and back view of the module are shown in Picture 1 and Picture 2 respectively.

The identification circuit in Picture 3 is described as follows:

1: GND
2: VDDIO
3: GND
4: VDD
5: NC
6: R0
7: R1
8: R2
9: G0
10: G1
11: G2
12: B0
13: B1
14: B2
15: HSYNC
16: VSYNC
17: DE
18: NC
19: NC
20: NC
21: NC
22: NC
23: NC
24: NC
25: NC
26: NC
27: NC
28: NC
29: NC
30: NC
31: NC
32: NC
33: NC
34: NC
35: NC
36: NC
37: NC
38: NC
39: NC
40: NC

Product Usage Instructions

The SRG0700C RGB Series Display is a versatile display module that can be used in various applications. To use the module, follow the steps below:

Step 1: Connect the module with the development board
The module is compatible with the RGB interface of punctual atomic development board and wildfire development board. Connect the module with the development board through a 40 pin flexible cable.
Step 2: Power on the module
Connect the input voltage to the module. The input voltage should be 5V and the IO voltage should be 3.3V.
Step 3: Display settings
The module supports screen display up and down flip settings and screen display left and right flip settings. Weld the resistance at position 0 of U / D, disconnect the resistance at position 1, and the screen will turn down; Weld the resistance at position 1 of U / D, disconnect the resistance at position 0, and the screen will turn upward; Default welding 0 position resistance, disconnect 1 position resistance. To flip the screen left or right, weld the resistance at position 0 of L / R, disconnect the resistance at position 1, and the screen will turn to the left; Weld the resistance at position 1 of L / R, disconnect the resistance at position 0, and the screen will turn right; Default welding 1 position resistance, disconnect 0 position resistance. By following these simple steps, you can use the SRG0700C RGB Series Display module in your application with ease.

Product Description

The product is a 7.0-inch RGB interface TFT LCD display module. The module supports the screen switching of 800×480 and 1024×600 resolutions, and supports up to 24bit rgb888 16.7M color display. There is no controller inside the module, so external controller is needed. For example, ssd1963 driver IC can be used as MCU LCD, and MCU with RGB controller (such as stm32f429, stm32ft767, stm32h743, etc.) can be used as RGB LCD. The module also has capacitive touch function and supports 5 touch points.

Product Features

7.0-inch color screen, support 24BIT RGB 16.7M color display, display rich colors
Support 800×480 and 1024×600 resolution screen switching, the display effect is very clear
Support 24 bit RGB parallel bus transmission
Compatible with RGB interface connection of punctual atomic development board and wildfire development board
Use capacitive touch screen to support 5 touch points
Provides a rich sample program for STM32 platforms
Military-grade process standards, long-term stable work
Provide underlying driver technical support

Product Parameters

Name	Description
Display Color	RGB888 16.7M (Compatible with RGB5665K) Color
SKU	800×480: MRG7111(TFT/CTP)

1024×600: MRG7122(CTP/IPS)

Active Area

| 800×480: 153.84×85.63(mm)

1024×600: 154.21×85.92(mm)

Power Consumption

| 800×480| 67mA(The Backlight is Off)

467mA(The Backlight is the Brightest)

1024×600| 104mA(The Backlight is Off) 310mA(The Backlight is the Brightest)
Product Weight (Net Weight)| 236g

Interface Description
The module is compatible with the RGB interface of punctual atomic development board and wildfire development board, and is connected with the development board through 40 pin flexible cable. The appearance is shown in Picture 1 and Picture 2. Surenoo-SRG0700C-RGB-Series-Display-
FIG-2 The module interface and selection circuit are shown in Picture 3:

Each identification circuit in Picture 3 is described as follows:

1-DITHB selection circuit
-U/D selection circuit
8-L/R selection circuit
©- Screen resolution selection circuit
©- P2 interface (compatible with atomic GB interface)
6-P3 interface (compatible with wildfire GB interface)

Screen internal Dithering display function settings
- Weld the 0 position resistance of DITHB and disconnect the 1 position resistance to
- enable the internal Dithering display function of the display panel;
- Weld the 1 position resistance of DITHB, disconnect the 0 position resistance, and turn off the internal Dithering display function of the screen;
- Default welding 0 position resistance, disconnect 1 position resistance
Screen display up and down flip settings
- Weld the resistance at position 0 of U / D, disconnect the resistance at position 1, and
- the screen will turn down;
- Weld the resistance at position 1 of U / D, disconnect the resistance at position 0, and
- the screen will turn upward;
- Default welding 0 position resistance, disconnect 1 position resistance
Screen display left and right flip settings
- weld the resistance at position 0 of L / R, disconnect the resistance at position 1, and
- the screen will turn to the left;
- Weld the resistance at position 1 of L/ R, disconnect the resistance at position 0, and
- the screen will turn right;
- Default welding 1 position resistance, disconnect 0 position resistance
Screen resolution selection
- As shown in the screen resolution selection circuit, the module supports screen
- switching of 800×480 and 1024×600 resolutions.
- Weld MO resistance to GND, M1 resistance to VCC, select 1024×600 resolution;
- Weld MO resistance to VCC, M1 resistance to GND, and select 800×480 resolution:
- P2 and P3 interface pins are described as follows:

Pin description of P2 interface

(Compatible with Atomic/Alientek RGB interface)

touch screen chip selection pin)

36

|

TP_MOSI

| Data pin of IIC bus of capacitance touch screen (write data pin of SPI bus of resistance touch

screen)

37| TP_MISO| Resistance touch screen SPI bus read data pin

(capacitance touch screen not used)

38

|

TP_CLK

| IIC bus clock control pin of capacitive touch screen (SPI bus clock control pin of resistance

touch screen)

39| TP_PEN| Touch screen interrupt control pin
40| RST| LCD reset control pin (effective at low level)
Pin description of P3 interface

(Compatible with Wildfire RGB interface)

Hardware Configuration

The hardware circuit of the LCD module consists of nine parts: voltage stabilizing circuit, backlight control circuit, screen resolution selection circuit, 50pin display interface, drain circuit. P2 user interface, P3 user interface, capacitive touch screen interface circuit and power supply circuit.

The voltage stabilizing circuit is used to provide VGH, VGL and VCOM voltage to the display screen, so as to ensure the stability of the display screen.
The backlight control circuit is used to provide backlight voltage to display screen and adjust backlight brightness.
The screen resolution selection circuit is used to select the display type (distinguished according to the resolution). Its principle is to connect pull-up or pull-down resistors on R7, G7 and B7 data lines respectively, and then determine the resolution of the display screen used by reading the status of the three data lines (equivalent to reading the display screen ID), so as to select different configurations. In this way, a test example can be compatible with multiple displays in software.
The 50pin display interface S used O access and control the display screen.
iS The drain circuit is used to balance the data line impedance between the display and the user interface.
P2, P3 user interface is used for external development board.
Capacitive touch screen interface circuit is used to intervene capacitive touch screen and control 1IC pin pull-up.
The power circuit is used to convert the input 5V power supply to 3.3V.

working principle

Introduction to GB LCD
High resolution and large size display screen generally does not have MCU screen interface, all adopt GB interface, which is RGB LCD. This LCD has no built-in control IC and no built-in video memory, so it needs external controller and video memory. The general GB LCD has 24 color data lines B (R, G, B each 8) and De, vs, HS, PCLK four control lines. It is driven by RGB mode, which generally has two driving modes: de mode and HV mode. In de mode, de signal is used to determine valid data (when De is high / low, data is valid), while in HV mode, row synchronization and field synchronization to are required to represent the rows and columns of scanning. The row scan sequence diagram of de mode and HV mode is shown in the following figure: Surenoo-
SRG0700C-RGB-Series-Display-FIG-4

It can be seen from the figure that the time sequence of de mode and HV mode is basically the same. De signal (DEN) is required for den mode, while de signal is not required for HV mode. The HSD in the figure is the HS signal, which is used for line synchronization. Note: in de mode, the HS signal can not be used, that is, the LCD can still work normally without receiving the HS signal. thpw is the effective signal pulse width of horizontal synchronization, which is used to indicate the beginning of a line of data; thb is the horizontal back corridor, which represents the number of pixel clocks from the horizontal effective signal to the effective data output; thfp is the horizontal front corridor, which indicates the number of pixel clocks from the end of a row of data to the beginning of the next horizontal synchronization signal. The vertical scanning sequence diagram is as follows : Surenoo-SRG0700C-RGB-Series-Display-FIG-5

VSD is vertical synchronous signal;
SD is the horizontal synchronous signal;
DE is data enable signal;

tupw is the effective signal width of vertical synchronization, which is used to indicate the beginning of a frame of data; tvb is the vertical rear corridor, which represents the number of invalid lines after the vertical synchronization signal; tvfp is a vertical front corridor, which indicates the number of invalid lines after the end of one frame data output and before the start of the next vertical synchronization signal; As can be seen from the figure, a vertical scan is exactly 480 effective De pulse signals. Each de clock cycle scans one line, and a total of 480 lines are scanned to complete the display of a frame of data. This is the scan sequence of 800 * 480 LCD panel. The timing of other resolution LCD panels is similar.

Instructions for use

STM32 instructions
Wiring instructions: See the interface description for pin assignments. Wiring is carried out in two steps:

A. Use 40pin flexible cable to connect the RB interface on the display module. Among them, P2 interface is compatible with punctual atomic development board, and P3 interface is compatible with wildfire development board (as shown in Picture 4, the connection method of P3 interface is the same as that of P2 interface.
B. After the display module is connected successfully, connect the other end of the flexible cable to the development board (as shown in Picture 5 and Picture 6). It should be noted that the flat cable should not be inserted reversely, so that the 1 ~ 40 pins of the display module interface and the 1 – 40 pins of the development board interface should be connected one by one.

Operating Steps:

A. Connect the LCD module and the STM32 MCU according to the above wiring instructions, and power on;
B. Select the STM32 test program to be tested, as shown below: (Test program description please refer to the test program description document in the test package)
C. Open the selected test program project, compile and download; detailed description of the STM32 test program compilation and download can be found in the following document: http://www.lcdwiki.com/res/PublicFile/STM32 KeilUseIllustrationEN.pdf.
D. If the LCD module displays characters and graphics normally, the program runs successfully:

Software Description

Code Architecture

A. STM32 code architecture description
- The code architecture is shown below:

The Demo API code for the main program runtime is included in the test code: in LCD initialization and related bin parallel port write data operations are included in the LCD code, Including MCD LCD and RGB LCD; Drawing points, lines, graphics, and Chinese and English character display related operations are included in the GUI code; The main function implements the application to run; Platform code varies by platform; Touch screen related operations are included in the touch code; The key processing related code is included in the key code; The code related to the led configuration operation is included in the led code;

Common software

This set of test examples requires the display of Chinese and English, symbols and pictures, so the modulo software is used. There are two types of modulo software: Image2Led and PtoLCD2002. Here is only the setting of the modulo software for the test program.
The PCtoLCD2002 modulo software settings are as follows:
Dot matrix format select Dark code
the modulo mode select the progressive mode
Take the model to choose the direction (high position first)
The output number system selects a hexadecimal number
Custom format selection C51 format
The specific setting method is as follows:
http://www.lcdwiki.com/Chinese and English display modulo settings
Image2Led modulo software settings are shown below:
The Image2Led software needs to be set to horizontal, left to right, top to bottom, and low position to the front scan mode.
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