PTC PT6552
The PT6552 is ½ duty dynamic LCD display driver. 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.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.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 initia...