■ GENERAL DESCRIPTION
The NJU3421A is a VFD (Vacuum Fluorescent Display) Controller Driver with key scan function.
It contains display data RAM, address counter, command register, high voltage drivers, and serial interface circuit.
The display data, the command data and the key scanning data can be transmitted with the serial interface circuit, and VFD driving voltage can operate up to 45V. The NJU3421A is useful for car audio, VCR and other VFD application items.