GENERAL DESCRIPTION
The NJU6657 is a bitmap LCD driver to display graphics or characters.
It contains 23,936 bits display data RAM, microprocessor interface circuits, instruction decoder, 88-common and 272-segment drivers.

FEATURES
● Direct Correspondence between Display Data RAM and LCD Pixel
● Display Data RAM – 23,936 bits
● 225 LCD Drivers – 88-common and 272-segment
● Direct Microprocessor Interface for both of 68 and 80 type MPU
● Serial Interface (SDA, SCL, A0, CSB)
● Programmable Bias selection : 1/5,1/7,1/8,1/9,1/10 bias
● Useful Instruction Set
    Display On/Off Cont, Initial Display Line Set, Page Address Set, Column Address Set, Status Read, Display Data Read/Write, ADC Select, Common Direction Register Set, Inverse Display, Entire Display On/Off, Partial Select, n-line Inverse Drive Register Set, Dummy Period Set, Read Modify Write, End, Internal Oscillation Circuit ON/OFF, Oscillation Frequency Set, Bias Select, Power Control set, EVR Register Set, Voltage Booster Circuits Multiple Select, Voltage Booster Circuits Clock Select, Temperture Sensor ON/OFF, Soft Reset, Power Save.
● Power Supply Circuits for LCD Incorporated
    Voltage Booster Circuits (12-time Maximum), Voltage Adjust Circuits, Voltage Follower x 4
● High Precision Voltage Regulator Incorporated (VREF=+3%, Ta=25OC )
● Precision Electrical Variable Resistance (400-step)
● VLCD Temperature Coefficient :-0.00 to –0.15%/OC
● Low Power Consumption 130uA(Typ.).
● Operating Voltage (All the voltages are based on VSS=0V.)
    - Logic Operating Voltage : VDD=2.7V to 5.5V
    - Voltage Booster Operating Voltage : VEE=VDD to 5.5V
    - LCD Driving Voltage : VLCD= 4.8 to 28.8V(External Voltage: 36.0V)
● Rectangle outlook for COG
● Package Outline : Bump-chip
● C-MOS Technology (Substrate : P)