DESCRIPTION
PT6547 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 300 segments and control up to 8 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. PT6547 also supports 1/3 to 1/4 duty-1/2 bias and 1/3 to 1/4 duty-1/3 bias drive techniques. Pin assignments and application circuit are optimized for easy PCB Layout and cost saving advantages.

FEATURES
• CMOS Technology
• 1/3 duty and 1/4 duty Drive Techniques
• 1/2 bias and 1/3 bias Drive Techniques
• Up to 228 segments using 1/3 duty and up to 300 segments using 1/4 duty
• Up to 8 General Purpose Output Ports
• Key input function for up to 30 keys [6(O) x 5(I)]
• Serial interface for Clock, Data Input, Data Output, Strobe pins
• Sleep Mode & All segment OFF function
• On-Chip voltage detection type Reset circuit
• Power Supply: 4.5V ~ 6.0V
• /RES pin provided forcibly initializing the internal circuit
• RC Oscillation Circuit
• Available in 100 pins, LQFP Package

APPLICATION
• Electronic Equipment with LCD Display