NJU6679 Datasheet | New Japan Radio

DESCRIPTION The NJU6678 is a bit map LCD driver to display graphics or characters. It contains 21,120 bits display data RAM, microprocessor interface circuits, instruction decoder, 132-segment and 104-mon drivers. The bit image display data is transferred to the display data RAM by serial or 8-bit parallel interface. The NJU6678 displays 104 x 132 dots graphics or 8-character 6-line by 16 x 16 dots character. It oscillates by built-in OSC circuit without any external ponents. Furthermore, the NJU6678 features Partial Display Function which creates up to 2 blocks of active display area and optimizes duty cycle ratio. This function sets optimum boosted voltage by the bination with both of programmable 5-time voltage booster circuit and 201step electrical variable resistor. As result, it reduces the operating current. The operating voltage from 2.5V to 3.3V and low operating current are useful for small size battery operating items. FEATURES Direct Correspondence between Display Data RAM and LCD Pixel Display Data RAM - 21,120 bits (1.5 times over than display size) 236 LCD Drivers - 104-mon and 132-segment Direct Microprocessor Interface for both of 68 and 80 type MPU Serial Interface Partial Display Function (2 blocks of active display area and automatic duty cycle ratio selection) Easy Vertical Scroll by the variable start line address and over size display data RAM Programmable Bias selection ; 1/4,1/5,1/6,1/7,1/8,1/9,1/10,1/11 bias mon Driver Order Assignment by mask option Version NJU6678A NJU6678B C0 to C103(Pin name) 0 to 103 103 to 0 PACKAGE OUTLINE NJU6678CL Useful Instruction Set Display Data Read/Write, Display ON/OFF Cont, Inverse Display, Page Address Set, Display Start Line Set, Partial Display, Bias Select, Column Address Set, Status Read, All On/Off, Voltage Booster Circuits Multiple Select(Maximum 5-time), n-Line Inverse, Read Modify Write, Power Saving, ADC Select, etc. Power Supply Circuits for LCD; Programmable Voltage Booster Circuits(5-time...