ILI9486 TFT LCD controller pinout

The ILI9486 drives a 320 × 480 panel. The MAR3501 shield uses an 8-bit 8080-style display bus through onboard level conversion.

MAR3501 Arduino shield contacts

20 contacts Current package

ILI Technology ·

MAR3501 Arduino shield contacts pinout

MAR3501 Arduino shield contacts

The numbers identify contacts in the manual’s interface table. Use the printed signal names and shield alignment drawing to locate the contacts on the four headers.

Selected pin details

18 · SD_DI

Input · Inputs

Host-to-SD-card SPI data.

LCDWiki MAR3501 User Manual CR2018-MI2455 Rev. 1.0, pp. 2–4 and direct insertion instructions.

Electrical limits · Link to this pin

All 20 pins

Pin	Signal	Direction	Function
1	5V Supply input	Supply input	5 V module input from the Arduino header.
2	3V3 Supply input	Supply input	3.3 V supply contact. The product pinout allows this contact to remain disconnected when 5 V powers the board.
3	GND Supply return	Supply return	Connect to host ground.
4	LCD_D0 Bidirectional	Bidirectional	Display parallel data bit 0.
5	LCD_D1 Bidirectional	Bidirectional	Display parallel data bit 1.
6	LCD_D2 Bidirectional	Bidirectional	Display parallel data bit 2.
7	LCD_D3 Bidirectional	Bidirectional	Display parallel data bit 3.
8	LCD_D4 Bidirectional	Bidirectional	Display parallel data bit 4.
9	LCD_D5 Bidirectional	Bidirectional	Display parallel data bit 5.
10	LCD_D6 Bidirectional	Bidirectional	Display parallel data bit 6.
11	LCD_D7 Bidirectional	Bidirectional	Display parallel data bit 7.
12	LCD_RST Input	Input	Active-low display reset.
13	LCD_CS Input	Input	Active-low display chip select.
14	LCD_RS Input	Input	Low for command, high for data and parameters.
15	LCD_WR Input	Input	Display write strobe.
16	LCD_RD Input	Input	Display read strobe.
17	SD_SS Input	Input	Active-low SD card select.
18	SD_DI Input	Input	Host-to-SD-card SPI data.
19	SD_DO Output	Output	SD-card-to-host SPI data.
20	SD_SCK Input	Input	SD card SPI clock.

Signal assignments

8080-style 8-bit display bus

The eight data contacts carry successive command and pixel bytes. The separate SD card interface is SPI.

SD card SPI

The SD socket has its own SPI signals, separate from the display bus.

Electrical limits

Parameter	Limit	Conditions and source
Module supply5 V on Arduino UNO	5 V on Arduino UNO	The documented shield includes level conversion. Bare controller supply limits are different. LCDWiki MAR3501 User Manual CR2018-MI2455 Rev. 1.0, pp. 2–4 and direct insertion instructions.
Panel pixels320 × 480	320 × 480	Use the module-specific initialization and orientation settings. LCDWiki MAR3501 User Manual CR2018-MI2455 Rev. 1.0, pp. 2–4 and direct insertion instructions.
Display data bus8 bits	8 bits	The module’s RGB565 test mode transfers two bytes for every pixel. LCDWiki MAR3501 User Manual CR2018-MI2455 Rev. 1.0, pp. 2–4 and direct insertion instructions.

Models and documents

The map covers the ILI9486-equipped MAR3501 documented in the module manual. The current product listing also names ST7796, so match the controller to the board revision. The map uses the numbers from the module manual, which span several headers.

MAR3501 (ILI9486): 3.5-inch Arduino UNO format module.

LCDWiki MAR3501 manufacturer documentation· LCDWiki MAR3501 User Manual CR2018-MI2455 Rev. 1.0, pp. 2–4 and direct insertion instructions.
ILI9486 controller datasheet· ILI Technology ILI9486 controller document linked in the module product documentation.