XPT2046 Datasheet PDF – Touch Screen Controller

This is a kind of controller.

Part Number : XPT2046

Function : Touch Screen Controller

Package : QFN-16, TSSOP-16, VFBGA-16 Type

Manufacturers : Shenzhen Xptek Technology ( http://www.xptek.com.cn/  )

Image :

XPT2046 datasheet


Description :

The XPT2046 is 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR type A/D converter. The device 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.



1. 12 bit SAR type A/D converter with S/H circuit
2. Low voltage operation (VCC = 2.2V ∼ 3.6V)
3. Low voltage digital I/F (1.5V ∼ VCC)
4. 4-wire I/F
5. Sampling frequency: 125 kHz (max)
6. On-Chip voltage reference (2.5V)
7. Pen pressure measurement
8. On-chip thermo sensor
9. Direct battery masurement
10. Low power consumption (260μA)


1. Personal digital assistants
2. Portable instruments
3. Point -of-sale terminals
4. Pagers
5. Touch screen monitors
6. Cellular phones

Block Diagram

Other data sheets within the file : XPT-2046

XPT2046 Datasheet PDF Download

XPT2046 pdf

TTP223 Datasheet – Touch Pad Detector IC

Part Number : TTP223


Package : SOP 6 Pin, SO 8 Pin or SSOP 16 Pin Type

Manufactures : TT

Images :

TTP223 datasheet

Description :

The TTP223 datasheet is a touch pad detector IC which offers 1 touch key. The touching detection IC is designed for replacing traditional direct button key with diverse pad size. Low power consumption and wide operating voltage are the contact key features for DC or AC application.

2 page


1. Operating voltage 2.0V~5.5V
2. Operating current @VDD=3V, no load, SLRFTB=1
3. Sensitivity can adjust by the capacitance(0~50pF) outside
4. Have two kinds of sampling length by pad option(SLRFTB pin)
5. Stable touching detection of human body for replacing traditional direct switch key
6. Provides Fast mode and Low Power mode selection by pad option(LPMB pin)

TTP223 pinout

TTP223 pinout datasheet


1. Wide consumer products
2. Water proofed electric products
3. Button key replacement

TTP223 Datasheet