Need help to configure TFT display

[UDHAY_KUMAR]

Hi,

I need to use TFT LCD display 4DLCD-50800480-IPS. Please help me to configure with the following parameters.

HFP
HSYNC
HBP
VFP
VSYNC
VBP
RGB clock (in MHz)
RGB clock phase adjustment - options are 0, 1/4, 1/2, 3/4

The know parameters are

H active pixels - 800
V active lines - 480
RGB888
required maximum frame rate - 60fps

Please help me to understand the unknown parameters. The datasheet is attached here.

Thanks in advance
Udhay

 

[danadakk]

Are you designing a product with processor, what is TFT interfaced to, what controller
is it using.....in short describe your project.

 

[UDHAY_KUMAR]

Are you designing a product with processor, what is TFT interfaced to, what controller
is it using.....in short describe your project.

Hi,
we are planning to use a 5" capacitive touch display with renesas RA8D1 microcontroller. The current version product we completed with an onboard HMI display from Nextion (NX8048P050_011). We are not satisfied with the touch response and display quality, so we are looking for a better display solution.

The RA8 microcontroller has the provision for 2 lane MIPI interface but unfortunately there is no display in the market for 5" 2 lane MIPI interface, so we decided to use ICN6211 MIPI to RGB bridge IC. The screen capture of ICN6211 configurator is attached here.

I need to input the "Basic settings" parameters to get the I2C configuration file. I'm not familiar with the RGB LCD display interface, so please help us to understand the setting for our specific display module.

 

[duke-lee]

I came across this case study, which talks about driving a RGB TFT LCD with STM32 MCU. Since you are using RGB to MIPI bridge IC, the post might shine some light on your project. The post is very long, below is part of it, see if it matches with your scenario.​

1 Overview​

This paper details the implementation of a display driver system using an STM32H7 microcontroller to directly drive the LMT070ENMFWA-NND-2 7-inch TFT LCD via the LTDC interface. The system includes display initialization, LTDC configuration, backlight control, clock synchronization, and touch panel interfacing.

2 Hardware Overview​

Microcontroller: STM32H743ZI (or any STM32H7 with LTDC and enough memory bandwidth)
Display: LMT070ENMFWA-NND-2 TFT LCD (800x480, RGB888 interface)
Touch Panel: Capacitive touch with I2C interface
External RAM: SDRAM (for framebuffer)

2.1 STM32H743ZI MCU​

The STM32H743ZI is a high-performance MCU based on the ARM Cortex-M7 core. It features high clock speeds, substantial on-chip memory, and a wide range of peripherals, making it suitable for demanding embedded applications. Key features include:

• High-performance ARM Cortex-M7 core
• Clock frequency up to 480 MHz
• Integrated LCD controller
• Extensive memory resources
• High-speed communication interfaces

 

[doraemon]

Hello!

Why aren't you asking to the ICN6211 maker? I'm sure they could help you and possibly provide some source
code to you.

Best regards,

Pascal

 

[UDHAY_KUMAR]

I came across this case study, which talks about driving a RGB TFT LCD with STM32 MCU. Since you are using RGB to MIPI bridge IC, the post might shine some light on your project. The post is very long, below is part of it, see if it matches with your scenario.​

1 Overview​

This paper details the implementation of a display driver system using an STM32H7 microcontroller to directly drive the LMT070ENMFWA-NND-2 7-inch TFT LCD via the LTDC interface. The system includes display initialization, LTDC configuration, backlight control, clock synchronization, and touch panel interfacing.

2 Hardware Overview​

Microcontroller: STM32H743ZI (or any STM32H7 with LTDC and enough memory bandwidth)
Display: LMT070ENMFWA-NND-2 TFT LCD (800x480, RGB888 interface)
Touch Panel: Capacitive touch with I2C interface
External RAM: SDRAM (for framebuffer)

2.1 STM32H743ZI MCU​

The STM32H743ZI is a high-performance MCU based on the ARM Cortex-M7 core. It features high clock speeds, substantial on-chip memory, and a wide range of peripherals, making it suitable for demanding embedded applications. Key features include:

• High-performance ARM Cortex-M7 core
• Clock frequency up to 480 MHz
• Integrated LCD controller
• Extensive memory resources
• High-speed communication interfaces

Thanks for white paper link. I will look into that.

 

[UDHAY_KUMAR]

Hello!

Why aren't you asking to the ICN6211 maker? I'm sure they could help you and possibly provide some source
code to you.

Best regards,

Pascal

Hi Pascal,
ICN6211 is not even listed in their website and there is no detailed datasheet, but it is easily available in Chinese market. The configuration details I'm getting from a "ICN6211 configuration software". So there is no response form the manufacturer for code or detailed datasheet.

Most of the Raspberry Pi display available in the markets are using this ICN6211 RGB to MIPI bridge, but there is not enough display available in the market for direct 2 lane MIPI interface. All I can get only 4Lane MIPI which is not suitable for my microcontroller.

I can use Raspberry PI display without any issue, but there is no interrupt pin for touch controller, so I have to continuously scan for touch I2C communication.