NJU6424 Series

10-Character 3-Line DOT Matrix LCD Controller Driver

The NJU6424 is a Dot Matrix LCD controller driver for 10-character 3-line with icon display in single chip. It contains voltage tripler，bleeder resistance，bias control circuit，CR oscillator，microprocessor interface circuits，instruction decoder controller，character generator ROM/RAM，high voltage operation common and segment drivers. The voltage tripler and bleeder resistance generates about triple voltage (8V) and bias voltage for LCD driving waveform internally from single power supply (3V). Consequently，high-contrast display can be performed though the simple power supply circuits. The vias control circuits can change the output current of Voltage follower，therefore COM/SEG driveability can be increased. The CR oscillator incorporates C and R，therefore no external components for oscillation are required. The microprocessor interface circuits which operate by 1MHz，can be connected directly to 4/8 bit microprocessor. The character generator consists of 9,600 bits ROM and 64 bytes RAM. The 26-common (24 for character，2 for icon) and 50-segment drivers are operated up to 13.5V，and the icon common driver display up to 100 icons.