3.5inch 16BIT RTP&CTP MODULE ST7796 SKU:MRB3512

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Product Picture

Product Description

• 3.5-inch color screen, support 16BIT RGB 65K color display,display rich colors
• 320x480 resolution for clear display
• IPS screen with full view
• Support switching between resistance touch screen and capacitive touch screen
• Support 16-bit parallel data bus mode switching
• Military-grade process standards, long-term stable work
• Support punctual atom full range of development board inline
• Provide STM32/C51 source code, WIKI data online update
• Provide underlying driver technical support

Product Parameters

Name	Parameter
Display Color	16BIT RGB 65K color
SKU	MRB3512
Screen Size	3.5(inch)
Screen Type	IPS TFT
Driver IC	ST7796
Resolution	480*320 (Pixel)
Module Interface	16Bit parallel interface
Active Area	48.96x73.44 (mm)
Touch Screen Type	Capacitive touch screen (maximum support for 5 touches) and Resistance touch screen
Touch IC	Resistance touch screen: XPT2046 Capacitive touch screen: GT911
Module PCB Size	56.41x97.60 (mm)
Operating Temperature	-10℃~60℃
Storage Temperature	-20℃~70℃
Operating Voltage	3.3V/5V
Power Consumption	TBD
Rough Weight	57g

Interface Definition

Picture1. Module Front picture	Picture2. Module rear picture

1. The hardware of the module supports switching between resistance touch screen and

capacitive touch screen (as shown in the dotted line box in Picture 2 above), as follows:

Use resistance touch screen: solder the components in the dotted line box of RTOUCH,

and do not need to weld the components in the dotted line box of CTOUCH;

Use capacitive touch screen: solder the components in the dotted line box of CTOUCH,

and do not need to weld the components in the dotted line box of RTOUCH;

2. The hardware of this module only supports 16 bit mode

Number	Module Pin	Pin 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	D0	LCD data bus 16-bit pin
7	D1
8	D2
9	D3
10	D4
11	D5
12	D6
13	D7
14	D8
15	D9
16	D10
17	D11
18	D12
19	D13
20	D14
21	D15
22	GND	Module power ground pin
23	BL	LCD backlight control pin(High level light)
24	VDD	Module power positive pin (module has integrated voltage regulator IC, so it can be connected to 5V or 3.3V on STM32 and 5V on C51)
25	VDD
26	GND	Module power ground pin
27	GND
28	NC	LCD backlight power positive pin (default shared onboard backlight power supply, this pin can not be connected)
29	MI	Resistance touch screen SPI bus read signal
30	MO	Resistance touch screen SPI bus write signal or capacitance touch screen IIC bus data signal
31	PEN	Capacitive or resistive touch screen interrupt detection pin (low level when touch occurs)
32	NC	Not defined, no need to use
33	TCS	Resistance touch screen chip selection control signal or capacitive touch screen reset signal (low level reset)
34	TCK	Resistance touch screen SPI bus or capacitive touch screen IIC bus clock signal

How to use on STM32 development board

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

• Step 1: Download the test program

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

• Step 2: Connect the STM32 development board

1. 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

• Step 3: Compile and download the program to the development board

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

• Step 4: Observe the running of the program

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

Program Download

• 3.5inch 16bit Parallel-Port RTP&CTP Module package

As follows：

Product Documentation

• 3.5inch 16bit Parallel-Port RTP&CTP Module User Manual
• 3.5inch QD-TFT3525 LCD Specification
• 3.5inch Capacitive Touch structure engineering drawing
• 3.5inch 16bit Parallel-Port RTP&CTP Module Size picture
• 3.5inch 16bit Parallel-Port RTP&CTP Module Schematic
• 3.5inch QD-TFT3525 LCD Schematic and PCB Package Library
• 3.5 inch ST7796 screen initialization
• Driver IC ST7796 Data sheet

Reference Materials

• C51 Keil and stc-isp software use illustration
• STM32 keil software use illustration
• PCtoLCD2002 software use illustration
• Image2Lcd software use illustration
• Chinese and English display modulo settings

Common Software

• PCtoLCD2002
• Image2Lcd

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