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APT7843

Touch Screen Controller

Description

The APT7843 Touch Screen Controller IC provides all

the screen drive , A/D converter and control circuits

to easily interface to 4 wire resistive touch screen.

The IC continually monitors the screen waiting for a

touch. When the screen touched , the IC performs

A/D converter to determine the location of touch.

Also , this device has 2 auxiliary input to A/D con-

verter , allowing for the measurement of other inputs

such as battery voltage.

Features

鈥?/div>

16 pin SSOP or TSSOP

Operates with four wire touch screen

8-bit or 12 bit A/D converter

Ratiometric Conversion eliminates screen

calibration

2 auxiliary analog inputs

4 wire serial interface

Full power down control

Applications

鈥?/div>

PDAs

Handheld computer

Touch-screen kiosks

Pin Assignment

+Vcc

X+

Y+

X-

Y-

GND

IN3

IN4

1

2

3

4

5

6

7

8

16

15

14

13

12

DCLK

CS

DIN

BUSY

DOUT

11 PENIRQ

10

9

+Vcc

V

REF

Order Information

APT7843

Temp. Range

Package Code

N : SSOP

Temp. Range

I : - 40 to 85

擄

C

O : TSSOP

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Copyright

錚?/div>

ANPEC Electronics Corp.

Rev. A.8 - Apr., 2002

1

www.anpec.com.tw

型號(hào)

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描述

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APT7843

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APT7843NI Datasheet

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