Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
LCD Driver IC
PT6554
DESCRIPTION
PT6554 is a high performance Liquid Crystal Display (LCD) Driver IC utilizing CMOS Technology
specially designed with Key Input Function. It can drive up to a maximum of 164 segments and control
up to 4 general purpose output ports. It includes a Key Scan Circuit that can support up to 30 key inputs
and provides On-Chip Voltage Detection Type Reset Circuit which prevents incorrect display. Display
Data can be directly displayed without using any decoder. PT6554 also supports both 1/4 duty-1/2 bias
and 1/4 duty-1/3 bias drive techniques. Pin assignments and application circuit are optimized for easy
PCB Layout and cost saving advantages.
FEATURES
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CMOS Technology
Up to 164 Segment Drivers (4 Com x 41 Seg)
Up to 4 General Purpose Output Ports
Key Input Function
1/4 Duty-1/2 Bias and 1/4 Duty-1/3 Bias Drive Techniques
Sleep Mode & All Segment OFF Function
On-Chip Voltage Detection Type Reset Circuit
RC Oscillation Circuit
Available in 64 pins, QFP or LQFP Package
APPLICATION
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Electronic Equipment with LCD Display
PT6554 v1.1
-1-
April, 2004
PTC [ PRINCETON TECHNOLOGY CORP ]
