ILI9225 TFT LCD controller pinout

The ILI9225 integrates a 176 × 220 display memory and a TFT controller. The MAR2201 module exposes a write-oriented serial display interface.

MAR2201 · 11-contact header

11 contacts Current package

ILI Technology ·

MAR2201 · 11-contact header

Follow the numbered contact or silkscreen on the exact module. The display and solder sides mirror each other.

Input · Inputs

Active-low display selection.

LCDWiki MAR2201 interface definition and 2.2-inch SPI board schematic.

Pin	Signal	Direction	Function
1	VCC Supply input	Supply input	Module supply. The manufacturer lists 3.3 V and 5 V operation.
2	GND Supply return	Supply return	Connect to host ground.
3	GND Supply return	Supply return	Connect to host ground.
4	NC None	None	Reserved contact. Leave open.
5	NC None	None	Reserved contact. Leave open.
6	LED Input	Input	High enables the backlight. The vendor specifies a 3.3 V high level for continuous operation.
7	CLK Input	Input	Display serial clock.
8	SDI Input	Input	Serial data from the host.
9	RS Input	Input	Register index/data selection. Use the MAR2201 initialization library to drive this line.
10	RST Input	Input	Active-low hardware reset.
11	CS Input	Input	Active-low display selection.

The host sends the clock and display data. The separate D/C line distinguishes command or register index from data.

Parameter	Limit	Conditions and source
Module supply3.3 V or 5 V	3.3 V or 5 V	Verify the supply setting on the module before connecting it. LCDWiki MAR2201 interface definition and 2.2-inch SPI board schematic.
Panel pixels176 × 220	176 × 220	Portrait address coordinates. LCDWiki MAR2201 interface definition and 2.2-inch SPI board schematic.
Pixel formatRGB565	RGB565	The module example uses 16-bit RGB values for its color test. LCDWiki MAR2201 interface definition and 2.2-inch SPI board schematic.

The pin map covers the 2.2-inch MAR2201 module header. The linked Ilitek datasheet describes the controller die and its alternative interfaces.

LCDWiki MAR2201 manufacturer documentation· LCDWiki MAR2201 interface definition and 2.2-inch SPI board schematic.
ILI9225 controller datasheet· ILI Technology ILI9225 controller datasheet, interface and display RAM sections. Manufacturer PDF hosted by Display Future.