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
• 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
• Cellular Phone
• Data Bank, Organizer
• Electronic Dictionary/Translator
• P.D.A.
• P.O.S.
• Information Appliance
• Caller ID
• Pager
• Electronic Equipment with LCD Display