4.3inch RGB Display

Product Picture

4.3-inch color screen, support 24BIT RGB 16.7M color display, display rich colors
Support 800x480, 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
It supports the switching between capacitive touch screen and resistance touch screen, and the capacitive touch screen can support up to 5 touch points
Support external adapter board, can be directly inserted into esp32 and STM32 development board
Support PWM backlight brightness adjustment
Provides a rich sample program for STM32 and C51 platforms
Military-grade process standards, long-term stable work
Provide underlying driver technical support

Name	Parameter
Display Color	16BIT RGB 65K color
SKU	MRB3951
Screen Size	4.0(inch)
Type	TFT
Driver IC	ST7796S
Resolution	480*320 (Pixel)
Module Interface	8bit or 16Bit parallel interface
Active Area	83.52x55.68(mm)
Module PCB Size	61.98x108.80 (mm)
Operating Temperature	-20℃~60℃
Storage Temperature	-30℃~70℃
Operating Voltage	3.3V~5V
Power Consumption	TBD
Rough Weight(Package containing)	68 (g)

The red box in the above figure is the 8-bit/16-bit data bus mode switch, which is described as follows:

Solder R2 with 0Ω resistor or short circuit directly, and disconnect R1: Select 16-bit data bus mode (default),use DB0~DB15 data pin

Solder R1 with 0Ω resistor or short circuit directly, and disconnect R2: Select 8-bit data bus mode use DB0~DB7 data pin

Number	Pin Label	Description
1	CS	LCD reset control pin( low level enable)
2	RS	LCD register / data selection control pin(high level: register, low level: data)
3	WR	LCD write control pin
4	RD	LCD read control pin
5	RST	LCD reset control pin( low level reset)
6	DB0	LCD data bus low 8-bit pin
7	DB1
8	DB2
9	DB3
10	DB4
11	DB5
12	DB6
13	DB7
14	DB8	LCD data bus high 8-bit pin (not used in 8-bit data bus mode)
15	DB9
16	DB10
17	DB11
18	DB12
19	DB13
20	DB14
21	DB15
22	SDCS	SD card selection control pin (used when using the SD card expansion function, this test program is not used)
23	BL	LCD backlight control pin(High level light)
24	VDD	Module power positive pin (module has integrated voltage regulator IC, so the power supply can be connected to 5V or 3.3V)
25	VDD
26	GND	Module power ground pin
27	GND	Module power ground pin
28	NC	LCD backlight power positive pin (default shared onboard backlight power supply, this pin can not be connected)
29	MISO	Touch screen SPI bus data input pin
30	MOSI	Touch screen SPI bus data output pin
31	PEN	Touch screen interrupt detection pin(Low level when a touch occurs)
32	FCS	Flash chip select control pin (used when using the Flash extension function, this test program is not used)
33	T_CS	Touch screen IC chip select control pin(Low level enable)
34	CLK	Touch screen SPI bus clock control pin

This module is compatible with the ALIENTEK STM32 development board. The specific usage is as follows:

Download the STM32 test program from the Program Download column
For a description of the relevant test procedures, please refer to the test program documentation in the package

Find the TFTLCD Slot on the development board, connect the module pins and Slot(For example, the module CS pin corresponds to the slot CS pin),

and then plug them directly into the Slot

Compile and download the program you need to test to the STM32 development board（ Don't know how to compile and download?）

After the program is finished, observe the running status of the program. If it can be displayed normally, the program runs successfully.