APT7846 Datasheet, PDF (1/15 Pages) Anpec Electronics Coropration – Touch Screen Controller

APT7846
Features
• 16 Pin SSOP or TSSOP
• Operates With Four Wire Touch Screen
• 8-Bit or 12-Bit A/D Converter
• Ratiometric Conversion Eliminates Screen
 Calibration
• 1 Auxiliary Analog Input
• Full Power Down Control
• Internal Bandgap Reference
• Serial Interface To Microprocessor
Applications
• PDAs
• Hand held computer
• Touch-screen mobile phone
• Protable electronic dictionary
• Smart IA
Touch Screen Controller
Description
The APT7846 is enhance function of APT7843 added
battery and temperature monitor function and offer
of a bandgap reference voltage for system user. The
APT7846 Touch Screen Controller IC provides all the
screen driver , 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 1 auxiliary input to A/D con-
verter , allowing for the measurement of other input
signal.
Pin Assignment
+Vcc 1
X+ 2
Y+ 3
X- 4
Y- 5
GND 6
V*)6 7
IN 8
16 DCLK
15 CS
14 DIN
13 BUSY
12 DOUT
11 PENIRQ
10 +Vcc
9 V4-.
Ordering Information
APT7846
Handling Code
Temp. Range
Package Code
Package Code
N : SSOP
Temp. Range
I : - 40 to 85°C
Handling Code
TU : Tube
O : TSSOP
TR : Tape & Reel
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  ANPEC Electronics Corp.
1
Rev. A.6 - Dec., 2001
www.anpec.com.tw