PT6552
�½ Duty LCD Driver with On-Chip Key
Input Function
DESCRIPTION
The PT6552 is �½ duty dynamic LCD display driver. In
addition to being able to directly Drive LCD panels with
up to 90 segments, it can also control up to 4 general
purpose output ports. This product also includes a key
scan circuit that allows it to accept input from keypads
with up to 30 keys. This allows the end product front
panel wiring to be simplified.
FEATURES
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Up to 4 general purpose output ports
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Up to 90 segments outputs
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Up to 30 key inputs (Key scan is only performed
when a key is pressed)
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�½ duty - �½ bias (up to 90 segments)
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Serial data control sleep mode and the all
segments off function
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Serial data controlled segment output
port/general-purpose output port usage
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Serial data I/O supports CCB format
communication with the system controller
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High generality since display data is displayed
directly without decoder intervention
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Reset pin that can establish the initial state
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Available in 64 pin QFP and 64 pin LQFP package
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
BLOCK DIAGRAM
Tel: 886-66296288
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Fax: 886-29174598
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http://www.princeton.com.tw
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2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PTC [ PRINCETON TECHNOLOGY CORP ]
