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screen controller. XPT2046 Datasheet

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screen controller. XPT2046 Datasheet






XPT2046 controller. Datasheet pdf. Equivalent




XPT2046 controller. Datasheet pdf. Equivalent





Part

XPT2046

Description

4-wire resistive touch screen controller



Feature


XPT2046 Touch Screen Controller XPT204 6 Data Sheet 2007.5 Copyright©2007, S HENZHEN XPTEK TECHNOLOGY CO.,LTD http: //www.xptek.com.cn 1/30 Free Datashee t http://www.datasheet4u.com/ XPT2046 Touch Screen Controller CONTENTS GENE RAL DESCRIPTION ....................... ....................................... ....................................... ........3 FEATURES..
Manufacture

XPTEK

Datasheet
Download XPT2046 Datasheet



XPT2046; ........................................ ....................................... ....................................... ..................3 APPLICATIONS....... ....................................... ....................................... ....................................... ....3 BLOCK DIAGRAM ................... ....................................... ...................



........................................ ......4 ABSOLUTE MAXIMUM RATINGS ...... ....................................... ....................................... ..........4 ELECTRICAL CHARACTERISTICS ....................................... ....................................... .............5 PIN CONFIGURATION ...... ....................................... ...................



........................................ ............8 PIN LAYOUT .............. ....................................... ....................................... ....................................... ...8 PIN DESCRIPTION................... ....................................... ....................................... ..............................9 TYPICAL CHARACTERISTICS ..

Part

XPT2046

Description

4-wire resistive touch screen controller



Feature


XPT2046 Touch Screen Controller XPT204 6 Data Sheet 2007.5 Copyright©2007, S HENZHEN XPTEK TECHNOLOGY CO.,LTD http: //www.xptek.com.cn 1/30 Free Datashee t http://www.datasheet4u.com/ XPT2046 Touch Screen Controller CONTENTS GENE RAL DESCRIPTION ....................... ....................................... ....................................... ........3 FEATURES..
Manufacture

XPTEK

Datasheet
Download XPT2046 Datasheet




XPT2046 Touch Screen Controller
XPT2046 Data Sheet
2007.5
Copyright©2007, SHENZHEN XPTEK TECHNOLOGY CO.,LTD http://www.xptek.com.cn
1/30
Free Datasheet http://www.datasheet4u.com/




XPT2046 Touch Screen Controller
CONTENTS
GENERAL DESCRIPTION .............................................................................................................3
FEATURES......................................................................................................................................... 3
APPLICATIONS................................................................................................................................ 3
BLOCK DIAGRAM ..........................................................................................................................4
ABSOLUTE MAXIMUM RATINGS ..............................................................................................4
ELECTRICAL CHARACTERISTICS ...........................................................................................5
PIN CONFIGURATION ...................................................................................................................8
PIN LAYOUT ......................................................................................................................................8
PIN DESCRIPTION...............................................................................................................................9
TYPICAL CHARACTERISTICS ..................................................................................................10
THEORY OF OPRATION..............................................................................................................13
BASIC OPERATION OF THE XPT2046...............................................................................................13
ANALOG INPUT................................................................................................................................14
INTERNAL REFERENCE.....................................................................................................................15
REFERENCE INPUT ...........................................................................................................................16
SIMPLIFIED DIAGRAM OF SINGLE-ENDED REFERENCE ....................................................................16
SIMPLIFIED DIAGRAM OF DIFFERENTIAL REFERENCE......................................................................17
TOUCH SCREEN SETTLING ...............................................................................................................17
TEMPERATURE MEASUREMENT .......................................................................................................18
BATTERY MEASUREMENT ...............................................................................................................19
PRESSURE MEASUREMEN ................................................................................................................20
DIGITAL INTERFACE...................................................................................................................21
PENIRQ OUTPUT ..........................................................................................................................24
PER-CONVERSION .......................................................................................................................26
16 CLOCKS-PER-CONVERSION.........................................................................................................26
DIGITAL TIMING ..............................................................................................................................26
15 CLOCKS-PER-CONVERSION.........................................................................................................28
DATA FORMAT ................................................................................................................................28
8-BIT CONVERSION .........................................................................................................................29
POWER DISSIPATION ..................................................................................................................29
DEMO ...............................................................................................................................................30
Copyright©2007, SHENZHEN XPTEK TECHNOLOGY CO.,LTD http://www.xptek.com.cn
2/30
Free Datasheet http://www.datasheet4u.com/




XPT2046 Touch Screen Controller
General Description
The XPT2046 is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR type
A/D converter.
The XPT2046 operates down to 2.2V supply voltage and supports digital I/O interface voltage from 1.5V to VCC
in order to connect low voltage uP.
The XPT2046 can detect the pressed screen location by performing two A/D conversions. In addition to location,
the XPT2046 also measures touch screen pressure.On-chip VREF can be utilized for analog auxiliary input,
temperature measurement and battery monitoring withthe ability to measure voltage from 0V to 5V.
The XPT2046 also has an on-chip temperature sensor
The XPT2046 is available in 16pin QFN thin package(0.75mm in height) and has the operating temperature range
of -40°C to +85°C
Features
12 bit SAR type A/D converter with S/H circuit
Low voltage operation (VCC = 2.2V 3.6V)
Low voltage digital I/F (1.5V VCC)
4-wire I/F
Sampling frequency: 125 kHz (max)
On-Chip voltage reference (2.5V)
Pen pressure measurement
On-chip thermo sensor
Direct battery masurement
Low power consumption (260μA)
Package 16pin QFN
Applications
Personal digital assistants
Portable instruments
Point -of-sale terminals
Pagers
Touch screen monitors
Cellular phones
Copyright©2007, SHENZHEN XPTEK TECHNOLOGY CO.,LTD http://www.xptek.com.cn
3/30
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