MC2674 Datasheet | Motorola Semiconductor

MOTOROLA ~SEMICONDUCTOR~~~~~~~~~~~~~ TECHNICAL DATA Advance Information Advanced Video Display Controller (AVDC) The MC2674 advanced video display controller (AVDC) is a programmable device designed for use in CRT terminals and display systems that employ raster-scan techniques. The AVDC generates the vertical and horizontal timing signals necessary for the display of interlaced or non-interlaced data on a CRT monitor. It provides consecutive addressing to a user specified display buffer memory domain and controls the CPU-display buffer interface for various buffer configuration modes. A variety of operating modes, display formats, and timing profiles can be implemented by programming the control registers in the AVDC. A minimum CRT terminal system configuration consists of an AVDC, a keyboard controller, an asynchronous munications interface adapter, character ROM, and an attributes controller. Other necessary parts of the system are a single-chip microputer such as the MC6809, display buffer RAM, and a small amount of TIL for miscellaneous address decoding, interface, and control. System plexity can be enhanced by upgrading the microprocessor and expanding via the system address and data buses. - 4 MHz Character Rate - 1 to 256 Characters Per Row - 1 to 16 Raster Lines Per Character Row - Bit Mapped Graphics Mode - Programmable Horizontal and Vertical Sync Generators - Interlaced or Non-Interlaced Operation - Up to 64K RAM Address for Multiple-Page Operation - Readable, Writeable, and Incrementable Cursor - Programmable Cursor Size and Blink - AC Line Lock - Automatic Wraparound of RAM - Automatic Split Screen - Automatic Bidirectional Soft Scrolling - Programmable Scan Line Increment - Row Table Addressing Mode - Double Height Tops and Bottoms - Double Width Control Output - Selectable Buffer Interface Modes - Dynamic RAM Refresh - pletely TTL patible - Single +5-Volt Power Supply - Power-On Reset Circuit - Applications Include: CRT...