Princeton Technology Corp.
LCD Driver IC with Key Input Function
DESCRIPTION
Tel : 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
PT6553
PT6553 is an LCD Driver IC providing key scan circuitry which can accept up to a maximum of 30 keys,
thereby, reducing printed circuit board wiring. It can drive up to 126 segments and is capable of control-
ling up to 4 general purpose output ports. The reset circuit provides on-chip voltage detection making it
possible to prevent incorrect displays. Pin assignments and application circuit are optimized for easy PCB
layout and cost saving advantages.
FEATURES
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Up to 126 Segments Outputs
Up to 4 General Purpose Output Ports
Key Input Function (up to 30 Keys)
1/3 Duty - 1/2 Bias and 1/3 Duty - 1/3 Bias Drive Techniques
Sleep Mode and all Segments OFF Function
Direct Display of Display Data without using a Decoder
On-Chip Voltage-Detection Type Reset Circuit
RC Oscillation Circuit
APPLICATIONS
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Cellular Phone
Data Bank, Organizer
Electronic Dictionary/Translator
P.D.A.
P.O.S.
Information Appliance
Caller ID
Pager
Electronic Equipment with LCD Display
PT6553 v 1.0
1
Updated November 2000
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