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MRB3951 4.0 Inch Parallel-Port Display Module

Name: MRB3951 4.0 Inch Parallel-Port Display Module
Brand: Shenzhen Wu He Tian Cheng Technology Co., Ltd.

4.0-inch color screen, support 16BIT RGB 65K color display, display rich colors. 320x480 resolution for clear display. Supports 8-bit and 16-bit parallel bus transmission with fast transfer speed. Supports ALIENTEK STM32 Mini, Elite, WarShip, Explorer, and Apollo development boards TFTLCD for direct plug-in use. Support for touch function. Support SD card function expansion. Provides a rich sample program for STM32 and C51 platforms. Military-grade process standards, long-term stable work. Provide underlying driver technical support.

Products

Parameters of 4.0 Inch Parallel-Port Display Module

Size (inch)	Resolution	Model	View	Interface	Product Size (mm)	Active Area (mm)	Audio	Touch panel	Power	OP(℃)
4	320*480	MRB3951	TN	parallel	61.98108.8010	83.52*55.68	NC	NC / RTP	5V/3.3V	-20~60°C

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)

Hardware Description of 4.0 Inch Parallel-Port Display Module

10 raspberry pi touch screen

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

Product Size of 4.0 Inch Parallel-Port Display Module

10 1 inch raspberry pi screen

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