Touch Screen 2.2" TFT LCD - 240x320 resolution

Product Details

This is a 2.2 inch, 320 x 240 touch screen TFT LCD module. You can connect this screen to the SPI pins of your microcontroller hardware.

This module is fully assembled with 20 x 2 rows header pins included.

Technical details:

Screen size: 2.2 inch (diagonal)
Display resolution: 320 x 240 dots (graphic)
Touch screen type: Resistive
Power supply voltage: 3.3V
LCD controller: μPD161704A (supports SPI)
LCD interface: SPI (serial)
Touch screen controller: XPT2046
Touch secren interface: SPI
Board Dimension: 59 x 48 mm

Pin Out:

PIN NO.	SYMBOL	DESCRIPTION	FUNCTION
1	GND	Ground	Ground
2	GND	Ground	Ground
3	3.3V	3.3V power supply	Connects to 3.3V power supply
4	3.3V	3.3V power supply	Connects to 3.3V power supply
5	PWM	Backlight brightness adjustment	Control the backlight brightness via PWM
6	PWM	Backlight brightness adjustment	Control the backlight brightness via PWM
8	NC	Not connected	Not connected
10	NC
12	NC
14	NC
16	NC
18	NC
20	NC
22	NC
24	NC
26	NC
28	NC
30	NC
7	NC
9	NC
11	NC
13	NC
15	NC
17	NC
19	T_IRQ	Touch screen interrupt	Low level while the touch screen detects pressing
21	T_BUSY	Touch screen chip busy
23	T_CS	Touch screen chip select	Active low
25	T_DCLK	Touch screen SPI clock	Connects to SPI SCK
27	T_DIN	Touch screen data input	Connects to SPI MOSI
29	T_DOUT	Touch screen data output	Connects to SPI MISO
31	RESET	Reset the controller chip	Active low
32	RESET	Reset the controller chip	Active low
33	SCI	Screen SPI data input (in Serial Mode)	Connects to SPI MOSI
35	SCL	Screen SPI clock (in Serial Mode)	Connects to SPI SCK
34	NC	Not connected	Not connected
36	NC	Not connected	Not connected
37	CS	LCD chip select (in Serial Mode)	Active low
38	CS	LCD chip select (in Serial Mode)	Active low
39	RS	Instruction/Data register selection	RS = 1 : Data Register RS = 0 : Instruction Register
40	RS	Instruction/Data register selection	RS = 1 : Data Register RS = 0 : Instruction Register

You can connect this touch screen module easily with Raspberry Pi using the DVK511 expansion board. The expansion board has touch screen (LCD22) circuit ready with built-in potentiometer to adjust the contrast of the touch screen.