4.0-inch Capacitive Touch SPI LCD Display Module ST7796 Driver - 320x480, Arduino Compatible (ER-DLS31040B)

Description

This 4.0-inch SPI module, equipped with ST7796U driver chip, brings you a delicate display with 320x480 resolution and 16.7M colors, clear images, rich colors, and sharp text. Capacitive touch technology makes interactive operations smooth and natural. The onboard level conversion circuit is compatible with 5V and 3.3V MCUs, and can easily adapt to various microcontrollers. The 4-wire SPI serial bus design saves I/O pin resources, simplifies hardware design, and improves system integration. The input interface provides two options: 2.54 pin headers and FPC extension interfaces, which meet the connection requirements in different scenarios and are flexible and changeable.

It comes with a micro TF card slot for easy expansion of storage space, whether it is storing a large number of pictures, videos, or complex program codes, it can easily cope with it. Whether it is a beginner or an experienced developer, you can quickly get started and easily start the project development journey.

We not only provide underlying driver technology support, but also provide a wealth of example learning programs, covering a variety of mainstream development platforms such as ESP32, STM32, Arduino UNO, etc. Whether you are engaged in intelligent hardware development or industrial automation applications, this module can provide you with a stable, efficient and convenient display solution, and is an ideal choice for your project development.

Customized requests can be discussed(based on MOQ), you can contact us at service@elecrow.com

Feature

• 4.0-inch color screen, 320x480 resolution, 65K colors, rich display colors
• Capacitive touch, sensitive response
• Onboard level conversion circuit, compatible with 5V and 3.3V MCU
• 4-wire SPI serial bus, saving I/O pins
• Module input supports 2.54 pin header interface and FPC extension interface
• On board micro TF card slot, can expand more storage space
• Provide underlying driver technology support, easy to get started
• Provide rich example learning programs (ESP32/STM32/Arduino UNO)

Application Scenario

Hardware Overview

Pin Function Description

Number	Pin Label	Description
1	VCC	Power positive(It is recommended to connect to 5V. When connected to 3.3V, the backlight brightness will be slightly dim)
2	GND	Power ground
3	LCD_CS	LCD selection control signal, Low level active
4	LCD_RST	LCD reset control signal, Low level reset
5	LCD_RS	LCD command / data selection control signal High level: data, low level: command
6	SDI(MOSI)	SPI bus write data signal(SD card and LCD screen used together)
7	SCK	SPI bus clock signal(SD card and LCD screen used together)
8	LED	LCD backlight control signal (If you need control, please connect the pins. If you don't need control, you can skip it)
9	SDO(MISO)	SPI bus read data signal (SD card and LCD screen used together)
10	CTP_SCL	Capacitive touch screen IIC bus clock signal (modules without touch screens do not need to be connected)
11	CTP_RST	Capacitor touch screen reset control signal, low-level reset (modules without touch screens do not need to be connected)
12	CTP_SDA	Capacitive touch screen IIC bus data signal (modules without touch screens do not need to be connected)
13	CTP_INT	Capacitor touch screen IIC bus touch interrupt signal, when generating touch, input low level to the main control (modules without touch screens do not need to be connected)
14	SD_CS	SD card selection control signal, low level active (without SD card function, can be disconnected)

 

Spec	2.8 inch	3.5 inch	4.0 inch
Panel Type	IPS	IPS	TN
Touch Screen Type	Capacitive Touch
Resolution	240*320	320*480	320*480
Active Area	43.2x57.6(mm)	48.96x73.44(mm)	55.68x83.52(mm)
Number of Colors	262K	16.7M	16.7M
Display Driver IC	ILI9341V	ST7796U	ST7796U
Touch Driver IC	FT6336G
Communication Interface	4-wire SPI interface
Brightness(TYP)	280(cd/m2)	300(cd/m2)
Backlight Type	White LED*4	White LED*6	White LED*8
Working Voltage	5V
Backlight Current	80mA	95mA	103mA
Power	0.4W	0.5W
Module Size	50x86(mm)	55.5x98x14.28(mm)	60.88x108x14.8(mm)
Operating Temperature	-30℃~80℃	-20~70(℃)
Storage Temperature	-30℃~80℃	-30~80(℃)

Package List

• 1x 4.0 inch SPI Display
• 1x 30cm 14Pin FPC Cable

Wiki & External Links

• Wiki
• User Manual
• Specification
• ST7796 Datasheet