Manufacturer: NEC Description: UPD7220AD is a 40-pin DIP (dual in-line package) integrated circuit (IC) manufactured by NEC. It is a video display controller (VDC) designed for use in personal computers. Features: Supports a variety of display resolutions, including 640x200, 640x400, and 640x480. Supports both monochrome and color displays. Supports both text and graphics modes. On-chip RAM for storing display data. On-chip ROM for storing character fonts. On-chip timing generator for generating display timing signals. On-chip CRT controller for generating display signals. On-chip DMA controller for transferring display data from main memory to on-chip RAM. On-chip interrupt controller for generating interrupts. On-chip I/O ports for interfacing with other devices. Application: The UPD7220AD is used in personal computers for displaying text and graphics on the screen. It is also used in industrial and medical equipment, such as medical imaging systems, for displaying images on the screen.(For reference only)
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