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