LC7471中文資料三洋數(shù)據(jù)手冊PDF規(guī)格書

Overview

The LC7471 is a video display controller for superimposing text and low-level graphics onto an NTSC-format television receiver. The LC7471 incorporates a 64 character internal character generator ROM, a 24-character × 64-line display ROM and a 176-character display RAM. Up to 288, 12 × 18-pixel characters can be displayed under microprocessor control on a 24-character by 12-line display.

The LC7471 features selectable pixel width and pixel height, and 64 vertical and 64 horizontal display start positions. It also features a flashing enable bit for each character position.

The LC7471 operates from a 5 V supply and is available in 22-pin shrink DIPs.

Features

? Complete text and graphics video overlay circuitry.

? 64-character internal character generator ROM.

? 24-character × 64-line display ROM.

? 176-character display RAM.

? 288-character display capability.

? 12 × 18-pixel characters.

? Four pixel widths.

? Four pixel heights.

? Selectable background color.

? Approximately 0.5 or 1 s period character flashing option.

? 25, 50 or 75 flashing duty cycle.

? Internal or external synchronization.

? Serial data control.

? 5 V supply.

? 22-pin shrink DIP.