3.5inch LCD MODULE-Capacitive Touch

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Revision as of 09:48, 15 September 2019 by Lin (talk | contribs) (Interface Definition)
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Product Picture

3.5-CTP-main-4.jpg3.5-CTP-2pin.jpg3.5-CTP-4pin-1.jpg3.5-CTP-4pin-4.jpg

Product Description

  • 3.5-inch color screen, support 16BIT RGB 65K color display
  • 320x480 resolution for clear display
  • With capacitive touch screen for 5-point touch
  • Support 8-bit/16-bit parallel data bus mode switching (16 bits by default)
  • Military-grade process standards, long-term stable work
  • Support punctual atom full range of development board inline, provide routines
  • 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 MRB3511
Screen Size  3.5(inch)
Screen Type TFT
Driver IC ILI9488
Resolution 320*480 (Pixel)
Module Interface 8Bit or 16Bit parallel interface
Active Area  48.96x73.44 (mm)
Touch Screen Type Capacitive touch screen (maximum support for 5 touches)
Touch IC 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

3.5-CTP-21.jpg 3.5-CTP-20.jpg
Picture1. Module Pin silk screen picture Picture2. Module rear view


The module hardware supports 8-bit and 16-bit parallel port data bus mode switching (shown in red box in Picture 2), as follows:

Solder R16 with 0Ω resistor or short circuit directly, and disconnect R8: Select 16-bit parallel port data bus mode, use DB0~DB15 data pins(default)
Solder R8 with 0Ω resistor or short circuit directly, and disconnect R16: Select 8-bit parallel port data bus mode, use DB0~DB7 data pins
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 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(When using the 8-bit parallel port data bus mode, the upper 8-bit pin is not used.) 
15 DB9
16 DB10
17 DB11
18 DB12
19 DB13
20 DB14
21 DB15
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 the power supply can be connected to 5V or 3.3V)
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 NC Not defined, no need to use
30 SDA Capacitive touch screen IIC bus data pin
31 INT Capacitive touch screen interrupt detection pin (low level when a touch occurs)
32 NC Not defined, no need to use
33 CRST Capacitive touch screen IC reset control pin (low level reset)
34 SCL Capacitive touch screen IIC bus clock pin

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

Product Documentation

Reference Materials

Common Software

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