Spark Logic

ILI9481 TFT LCD controller connection guide

ILI9481 TFT LCD controller MAR3201 · 36-contact header wiring guide with power, signal assignments, and bench checks.

MAR3201 · 36-contact header

36 contacts Current package

ILI Technology ·

Fit the display to an Arduino Mega 2560

Required

With power disconnected, fit the MAR3201 as shown in the direct-insertion drawing. Align both rows with the Mega 2560 header before applying power.

  • Shield supply
  • Shield ground
  • LCD_RST
  • LCD_CS
  • LCD_RS
  • LCD_WR
  • DB8
    • DB8 (3)
    • Corresponding Mega header position
  • DB9
    • DB9 (4)
    • Corresponding Mega header position
  • DB10
    • DB10 (5)
    • Corresponding Mega header position
  • DB11
    • DB11 (6)
    • Corresponding Mega header position
  • DB12
    • DB12 (7)
    • Corresponding Mega header position
  • DB13
    • DB13 (8)
    • Corresponding Mega header position
  • DB14
    • DB14 (9)
    • Corresponding Mega header position
  • DB15
  • DB7
    • DB7 (11)
    • Corresponding Mega header position
  • DB6
    • DB6 (12)
    • Corresponding Mega header position
  • DB5
    • DB5 (13)
    • Corresponding Mega header position
  • DB4
    • DB4 (14)
    • Corresponding Mega header position
  • DB3
    • DB3 (15)
    • Corresponding Mega header position
  • DB2
    • DB2 (16)
    • Corresponding Mega header position
  • DB1
    • DB1 (17)
    • Corresponding Mega header position
  • DB0
    • DB0 (18)
    • Corresponding Mega header position

Bench checks

  • Leave the SD slot empty and use the manufacturer’s MAR3201 example with the display type set to ILI9481.
  • Run the color-fill example. If pixels appear in wrong colors, verify the 16-bit bus alignment and the selected pixel format.

LCDWiki MAR3201 user manual and 36-contact interface definition. ILI Technology ILI9481 v0.35, MCU interface and data/command transfers.

MAR3201 · 36-contact header wiring map

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

Use the module interface table and Mega 2560 mating drawing to find contact 1. Contacts alternate between the two rows.
Selected pin details

8 · DB13

Bidirectional · Data

Display data bus bit 13.

LCDWiki MAR3201 user manual and 36-contact interface definition.

Electrical limits · Pin in the reference

Models and documents

This map covers the 36-contact header of the MAR3201 Arduino Mega 2560 shield. Use the manufacturer’s connector numbering and direct-insertion drawing.

MAR3201
3.2-inch display shield for Arduino Mega 2560.