3.5 inch SPI TFT Module

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Electronic Passives Component Capacitor

Internal Reference: DL-048

The 3.5-inch TFT LCD with SPI Interface is an exceptional display for your ambitious projects. This screen also features an SD card slot, which conveniently stores the images you wish to showcase.

3.5-inch TFT LCD with SPI Interface Specifications:

    • Display Color: RGB 65K colour
    • Screen Size: 3.5(inch)
    • Type: TFT
    • Driver IC: ILI9488
    • Resolution: 480*320 (Pixel)
    • Module Interface: 4-wire SPI interface
    • Active Area (AA area): 48.96x73.44(mm)
    • Module PCB Size: 56.34x98(mm)
    • Operating Temperature: -20℃~60℃
    • Storage Temperature: -30℃~70℃
    • VCC power voltage: 3.3V~5V
    • Logic IO port voltage: 3.3V(TTL)
    • Power Consumption: TBD
    • Rough Weight: 45 (g)


Note*

When we directly connected the SPI display module without the on-board level conversion module to the Arduino, we found that it could not run at all. This is because the SPI module's pin can only input a 3.3V high level, while the Arduino output has a high level of 5V. To run successfully, there are two Method: short circuit method and external level conversion module method. The short-circuit method has the advantages of simple operation, short wiring, and no need for external devices. The disadvantage is that the module generates a large amount of heat during operation. Will affect the life of the module. The external level conversion module method is a normal operation, and the advantage is that the module generates less heat and runs stably during operation, and the disadvantage is that the operation is slightly complicated. (An external level shifting module is required) to increase the cost (additional level conversion module is required). In summary, it is recommended to use the external level shifting module method.

Step 1: Short-Circuit Method
The short-circuit method is to short the J1 component position (shown below) with solder on the back of the module. After shorting, the runtime module VCC The pin must be connected to a 5V power supply (not connected to 3.3V).

Step 2: External Level Conversion Module Method
The so-called external level conversion module method is to connect the Arduino and the display module through an external level conversion module, so that The 5V high level of the Arduino output is converted to 3.3V by the level conversion module and then input to the display module. As shown below:

3.5inch SPI Module ILI9488 3.png

User Manual

The ILI9488 TFT lib. look at link: GitHub link

 

Pinout:

3.5"

 

Number

Pin Label

Description

1

VCC

5V/3.3V power input

2

GND

Ground

3

CS

LCD chip select signal, low level enable

4

RESET

LCD reset signal, low level reset

5

DC/RS

LCD register / data selection signal,

high level: register, low level: data

6

SDI(MOSI)

SPI bus write data signal

7

SCK

SPI bus clock signal

8

LED

Backlight control, high level lighting,

if not controlled, connect 3.3V always bright

9

SDO(MISO)

SPI bus read data signal, if you do not need to the read function, you can not connect it

(The following is the touch screen signal line wiring, if you do not need to touch function or the module itself does not have touch function, you can not connect them)

10

T_CLK

Touch SPI bus clock signal

11

T_CS

Touch screen chip select signal, low level enable

12

T_DIN

Touch SPI bus input

13

T_DO

Touch SPI bus output

14

T_IRQ

Touch screen interrupt signal, low level when touch is detected