PT6552 Datasheet | PTC

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 munication 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: 886-66296288‧Fax: 886-29174598‧ http://.princeton..tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan APPLICATION...