LC74735NW

www.DataSheet.co.kr Ordering number : ENN7545 CMOS IC LC74735NW On-Screen Display Controller Overview The LC74735NW is an on-screen display CMOS IC that displays characters and patterns on a TV screen. For QVGA display, the LC74735NW supports the use of both a 12 × 18 dot character font and a 12 × 18 dot graphics font with 16 colors with a total of 512 characters and glyphs. For WVGA display, the LC74735NW supports the use of both a 24 × 32 dot character font and a 12 × 16 dot graphics font with 16 colors with a total of 512 characters and glyphs. The LC74735NW can also implement extremely varied displays by the use of an external ROM. The LC74735NW supports both QVGA (480 × 234) and WVGA (800 × 480). Features Screen structure — Main: QVGA mode: 40 characters × 13 lines (up to 520 characters) on a QVGA panel WVGA mode: 33 characters × 15 lines (up to 495 characters) on a WVGA panel — Wallpaper display screen: Permanent repetition of a 2 × 2 (horizontal × vertical) character pattern Character structure — QVGA mode: 12 dots (horizontal) × 18 dots (vertical): Character display 12 dots (horizontal) × 18 dots (vertical): Graphic glyph display — WVGA mode: 24 dots (horizontal) × 32 dots (vertical): Character display 12 dots (horizontal) × 16 dots (vertical): Graphic glyph display (1 pixel: 2 × 2 dots) — Character display clock: About 9 MHz — QVGA with an LC oscillator 33.2 MHz (maximum: 40 MHz) WVGA with an external clock signal input *: The ROM image is known...