ILI9481 TFT LCD controller pinout · MAR3201 · 36-contact header

MAR3201 · 36-contact header pinout

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 · Link to this pin

All 36 pins

Pin	Signal	Direction	Function
1	5V Supply input	Supply input	Positive shield supply.
2	5V Supply input	Supply input	Second positive shield supply contact.
3	DB8 Bidirectional	Bidirectional	Display data bus bit 8.
4	DB9 Bidirectional	Bidirectional	Display data bus bit 9.
5	DB10 Bidirectional	Bidirectional	Display data bus bit 10.
6	DB11 Bidirectional	Bidirectional	Display data bus bit 11.
7	DB12 Bidirectional	Bidirectional	Display data bus bit 12.
8	DB13 Bidirectional	Bidirectional	Display data bus bit 13.
9	DB14 Bidirectional	Bidirectional	Display data bus bit 14.
10	DB15 Bidirectional	Bidirectional	Display data bus bit 15.
11	DB7 Bidirectional	Bidirectional	Display data bus bit 7.
12	DB6 Bidirectional	Bidirectional	Display data bus bit 6.
13	DB5 Bidirectional	Bidirectional	Display data bus bit 5.
14	DB4 Bidirectional	Bidirectional	Display data bus bit 4.
15	DB3 Bidirectional	Bidirectional	Display data bus bit 3.
16	DB2 Bidirectional	Bidirectional	Display data bus bit 2.
17	DB1 Bidirectional	Bidirectional	Display data bus bit 1.
18	DB0 Bidirectional	Bidirectional	Display data bus bit 0.
19	LCD_RS Input	Input	Display command versus data select.
20	LCD_WR Input	Input	Display write strobe.
21	LCD_CS Input	Input	Active-low display chip select.
22	LCD_RST Input	Input	Active-low display reset.
23	NC None	None	Reserved contact. Leave open.
24	NC None	None	Reserved contact. Leave open.
25	NC None	None	Reserved contact. Leave open.
26	FLASH_CS Input	Input	Chip select for the shield SPI flash interface.
27	NC None	None	Reserved contact. Leave open.
28	NC None	None	Reserved contact. Leave open.
29	NC None	None	Reserved contact. Leave open.
30	NC None	None	Reserved contact. Leave open.
31	SPI_MISO Output	Output	Storage data from the shield to the host.
32	SPI_MOSI Input	Input	Storage data from the host to the shield.
33	SPI_CLK Input	Input	Host clock for the storage bus.
34	SD_CS Input	Input	Active-low microSD chip select.
35	GND Supply return	Supply return	Connect to host ground.
36	GND Supply return	Supply return	Connect to host ground.

Signal assignments

16-bit display bus

LCD_RS distinguishes commands from display data. The shield header exposes the write strobe.

Storage SPI

Use the relevant storage chip select on the shared SPI bus.

Electrical limits

Parameter	Limit	Conditions and source
Mega 2560 supply5 V	5 V	The module includes level conversion. The connector labels two supply contacts 5V. LCDWiki MAR3201 user manual and 36-contact interface definition.
Panel pixels320 × 480	320 × 480	The module guide uses landscape orientation for its 480 × 320 examples. LCDWiki MAR3201 user manual and 36-contact interface definition.
Display bus16 bits, RGB565	16 bits, RGB565	Use the MAR3201 display-only test before testing the separate SD interface. LCDWiki MAR3201 user manual and 36-contact interface definition.

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.

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