Spark Logic

ILI9486 TFT LCD controller connection guide

ILI9486 TFT LCD controller MAR3501 Arduino shield contacts wiring guide with power, signal assignments, and bench checks.

MAR3501 Arduino shield contacts

20 contacts Current package

ILI Technology ·

Fit the shield to an Arduino UNO

Required

With power disconnected, align the shield with all UNO headers and fit it without offsetting any connector. Select the MAR3501 ILI9486 example and leave the SD socket empty for the display-only test.

Bench checks

  • Check that the shield is flush and the board starts normally after reconnecting power.
  • Upload the manufacturer’s MAR3501 color test. If reset and backlight work but no colors appear, confirm the fitted controller and compare the 8-bit bus assignments with the shield example.

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

MAR3501 Arduino shield contacts wiring map

Highlighted contacts are used in the required step or selected circuit. Select a contact to inspect it.

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

20 · SD_SCK

Input · Clock inputs / oscillator

SD card SPI clock.

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

Electrical limits · Pin in the reference

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.