Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
LCD Driver IC with Key Input Function
PT6553
DESCRIPTION
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
controlling 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 V1.7
-1-
November, 2007
PTC [ PRINCETON TECHNOLOGY CORP ]
