NJU6682

NJU6679 PRELIMINARY 128-common x 132-segment BIT MAP LCD DRIVER GENERAL DESCRIPTION The NJU6679 is a bit map LCD driver to display graphics or characters. It contains 25,344 bits display data RAM, microprocessor interface circuits, instruction decoder, 132-segment and 128-common drivers. The bit image display data is transferred to the display data RAM by serial or 8-bit parallel interface. The NJU6679 displays 128 x 132 dots graphics or 8-character 8-line by 16 x 16 dots character. It oscillates by built-in OSC circuit without any external components. Furthermore, the NJU6679 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 combination with both of programmable 6-time voltage booster circuit and 201step electrical variable resistor. As result, it reduces the operating current. The operating voltage from 2.4V to 3.6V 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 - 25,344 bits (1.5 times over than display size) 236 LCD Drivers - 128-common 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...