Copyright  ANPEC Electronics Corp.

Rev. A.8 - Apr., 2002

APT7843

www.anpec.com.tw

1

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.

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.

Applications

Features

calibration

+Vcc

1

14

15

16

8

7

6

5

4

3

2

11

12

13

9

10

IN3

GND

Y-

X-

Y+

X+

DOUT

BUSY

DIN

DCLK

IN4

+Vcc

CS

PENIRQ

Pin Assignment

Order Information

APT7843

Temp. Range

Package Code

Package Code

N : SSOP

O : TSSOP

Temp. Range

I : - 40 to 85 C

°