AR1010-ISLASHML datasheet(8/70 Pages) MICROCHIP

부품명	AR1010-I/ML

상세설명	Resistive Touch Screen Controller

PDF	70 Pages

Scroll/Zoom	100%

제조업체	MICROCHIP [Microchip Technology]

홈페이지	http://www.microchip.com

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AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER

DS41393B-page 8

Preliminary

 2009-2012 Microchip Technology Inc.

2.3

4-Wire Sensor

A 4-wire resistive touch sensor consists of a stable and

flex layer, electrically separated by spacer dots. The

layers are assembled perpendicular to each other. The

touch position is determined by first applying a voltage

gradient across the flex layer and using the stable layer

to measure the flex layer’s touch position voltage. The

second step is applying a voltage gradient across the

stable layer and using the flex layer to measure the

stable layer’s touch position voltage.

The measured voltage at any position across a driven

axis is predictable. A touch moving in the direction of

the driven axis will yield a linearly changing voltage. A

touch moving perpendicular to the driven axis will yield

a relatively unchanging voltage (See Figure 2-1).

FIGURE 2-1:

4-WIRE DECODING

AR1010-I/ML 데이터시트(PDF) 8 Page - Microchip Technology