LC74789 PDF Datasheet


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Description

This is On-Screen Display Controller. Ordering number : EN5732A CMOS IC LC74789, 74789M, 74789JM On-Screen Display Controller Overview The LC74789, LC74789M, and LC74789JM are onscreen display controller CMOS ICs that display characters and patterns on the TV screen under microprocessor control. These ICs support 12 × 18 dot characters and can display 12 lines by 24 characters of text. Package Dimensions unit: mm 3067-DIP24S [LC74789] Features Display format: 24 characters by 12 rows (Up to 288 characters) Character format: 12 (horizontal) × 18 (vertical) dots Character sizes: Three sizes each in the horizontal and vertical directions Characters in font: 256 (254 characters, one spacing character, and one transparent spacing character) Initial display positions: 64 horizontal positions and 64 vertical positions Blinking: Specifiable in character units Blinking types: Two periods supported: About 1.0 second and about 0.5 second Blanking: Over the whole font (12 × 18 dots) Background color: 8 colors (i.