PT6552 Datasheet, PDF (1/22 Pages) Princeton Technology Corp – 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.
APPLICATIONS
• 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
PT6552
½ Duty LCD Driver with On-Chip Key
Input Function
FEATURES
• Up to 4 general purpose output ports
• Up to 90 segments outputs
• Up to 30 key inputs (Key scan is only performed
when a key is pressed)
• ½ duty - ½ bias (up to 90 segments)
• Serial data control sleep mode and the all
segments off function
• Serial data controlled segment output
port/general-purpose output port usage
• Serial data I/O supports CCB format
communication with the system controller
• High generality since display data is displayed
directly without decoder intervention
• Reset pin that can establish the initial state
• Available in 64 pin QFP and 64 pin LQFP package
Tel: [phone]‧Fax: [phone]‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan