Princeton Technology Corp.
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886-2-29162151
Fax
錛?86-2-29174598
URL:
http://www.princeton.com.tw
Preliminary
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 pre 1.0
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January 10, 2002
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