DESCRIPTION
PT6554 is a high performance Liquid Crystal Display (LCD) Driver IC utilizing CMOS Technology specially designed with Key Input Function. It can drive up to a maximum of 164 segments and control up to 4 general purpose output ports. It includes a Key Scan Circuit that can support up to 30 key inputs and provides On-Chip Voltage Detection Type Reset Circuit which prevents incorrect display. Display Data can be directly displayed without using any decoder.

FEATURES
•CMOS Technology
• Up to 164 Segment Drivers (4 Com x 41 Seg)
• Up to 4 General Purpose Output Ports
• Key Input Function
• 1/4 Duty-1/2 Bias and 1/4 Duty-1/3 Bias Drive Techniques
• Sleep Mode & All Segment OFF Function
• On-Chip Voltage Detection Type Reset Circuit
• RC Oscillation Circuit
• Available in 64 pins, QFP or LQFP Package

APPLICATION
• Electronic Equipment with LCD Display