XPT2046 4-Wire Touch Screen Controller (TSSOP-16)

12-bit, 125 kHz controller IC for 4-wire resistive touch panels with SPI-compatible serial interface, 2.2–5.25 V supply support, pressure measurement, auxiliary ADC input, battery monitor, and temperature sensor. TSSOP-16 package.

Logical pinout · physical placement not verified

VCC
Analog supply input
Type · Power
XP
X+ touch-panel input
Type · Analog
YP
Y+ touch-panel input
Type · Analog
XN
X- touch-panel input
Type · Analog
YN
Y- touch-panel input
Type · Analog
GND
Ground
Type · Ground
VBAT
Battery monitor input
Type · Power
AUX
Auxiliary ADC input
Type · Analog
VREF
Reference voltage input/output
Type · Analog
IOVDD
Digital I/O supply input
Type · Power
PENIRQ
Pen-contact interrupt output
Type · GPIO
DOUT
Serial data output
Type · SPI
BUSY
Conversion busy output
Type · GPIO
DIN
Serial data input
Type · SPI
CS
Active-low chip select
Type · SPI
DCLK
Serial/conversion clock input
Type · SPI

Pin	Type	Function
VCC	Power	Analog supply input
XP	Analog	X+ touch-panel input
YP	Analog	Y+ touch-panel input
XN	Analog	X- touch-panel input
YN	Analog	Y- touch-panel input
GND	Ground	Ground
VBAT	Power	Battery monitor input
AUX	Analog	Auxiliary ADC input
VREF	Analog	Reference voltage input/output
IOVDD	Power	Digital I/O supply input
PENIRQ	GPIO	Pen-contact interrupt output
DOUT	SPI	Serial data output
BUSY	GPIO	Conversion busy output
DIN	SPI	Serial data input
CS	SPI	Active-low chip select
DCLK	SPI	Serial/conversion clock input

Logical pinout · physical placement not verified

Pin details

16 connections

VCC
Analog supply input
Power
XP
X+ touch-panel input
Analog
YP
Y+ touch-panel input
Analog
XN
X- touch-panel input
Analog
YN
Y- touch-panel input
Analog
GND
Ground
Ground
VBAT
Battery monitor input
Power
AUX
Auxiliary ADC input
Analog
VREF
Reference voltage input/output
Analog
IOVDD
Digital I/O supply input
Power
PENIRQ
Pen-contact interrupt output
GPIO
DOUT
Serial data output
SPI
BUSY
Conversion busy output
GPIO
DIN
Serial data input
SPI
CS
Active-low chip select
SPI
DCLK
Serial/conversion clock input
SPI

Start wiring

I2C · SPI · Single data line · 3.3 – 5 V · Breakout

Confirm the data interface matches your host board.

Module pins: VCC, IOVDD, GND, XP, YP, XN, YN, VBAT. Schematik maps them to your board in the app.

Touch

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Pinout