GENERAL DESCRIPTION
NJU6543 is a 1/2 or 1/3,1/4 duty segment type LCD driver. It incorporates 4 common driver circuits and 128 segment driver circuits. NJU6543 can drive maximum 256 segments in 1/2 duty ratio and maximum 384 segments in 1/3 duty ratio and maximum 512 segments in 1/4 duty ratio.
In addition, the NJU6543s useful functions meet a wide range of applications.

FEATURES
● LCD driving circuit :Max. 128outputs (4 outputs as for general purpose ports)
● Programmable Duty Ratio
    1/2 Duty Ratio :Driving max. 256 segments
    1/3 Duty Ratio :Driving max. 384 segments
    1/4 Duty Ratio :Driving max. 512 segments
● Programmable Bias Ratio :1/2, 1/3 bias ratio
● Electrical Variable Resistance :8-steps
● Serial Data Transfer :Shift clock max. 2MHz
● Built-in Oscillator :CR oscillation with external resistor and capacitance, or external oscillation signal input
● Operating Voltage :3.0V / 5.0V
● C-MOS Technology :P-Sub
● Package Outline :LQFP144 20mm*20mm t=1.7mm(max) Pin-pitch=0.5mm