LC74735YW: On-Screen Display Controller
The LC74735YW is an on-screen display CMOS IC that displays characters and patterns on a TV screen. For QVGA display, the LC74735YW supports the use of both a 12 x 18 dot character font and a 12 x 18 dot graphics font with 16 colors with a total of 512 characters and glyphs. For WVGA display, the LC74735YW supports the use of both a 24 x 32 dot character font and a 12 x 16 dot graphics font with 16 colors with a total of 512 characters and glyphs. The LC74735YW can also implement extremely varied displays by the use of an external ROM. The LC74735YW supports both QVGA (480 x 234) and WVGA (800 x 480).
Features- Screen structureMain :QVGA mode: 40 characters x13 lines (up to 520 characters) on a QVGA panelWVGA mode: 33 characters x15 lines (up to 495 characters) on a WVGA panelWallpaper display screen: Permanent repetition of a 2x2 (horizontal x vertical) character pattern
- Character structureQVGA mode :12 dots (horizontal) x18 dots (vertical) : Character display12 dots (horizontal) x18 dots (vertical) : Graphic glyph displayWVGA mode:24 dots (horizontal) x32 dots (vertical) : Character display12 dots (horizontal) x16 dots (vertical) : Graphic glyph display (1 pixel : 2x2 dots)Character display clock:About 9 MHzQVGA with an LC oscillator 33.2 MHz (maximum: 40 MHz)WVGA with an external clock signal input
- Number of characters: 512 (internal)
- Character sizes: Four horizontal sizes (1x, 2x, 3x, and 4x)Four vertical sizes (1x, 2x, 3x, and 4x)
- Display start positions : 512 positions in the horizontal direction and 256 positions in the vertical direction.QVGA mode WVGA mode Setting units : Horizontal : 1 dot 2 dots (In screen units)Vertical: 1 dot 2 dots (In screen units)
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Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| LC74735YWS-8A43-H | Obsolete | Pb-free
Halide free | SPQFP-80 / SQFP-80 | 131AL | 4 | Tray Foam | 60 | |
| LC74735YWS-8A43-SH-H | Active | Pb-free
Halide free | SPQFP-80 / SQFP-80 | 131AL | 4 | Tray JEDEC | 595 | $6.6306 |
Specifications
| Product | Character Format | Number of Characters Supported (Internal) | Number of Colors | Control Input | Supply Voltage Min (V) | Supply Voltage Max (V) | Operating Drain Current Max (A) |
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| LC74735YWS-8A43-SH-H | 12 x 18
24 x 32 | 512 | 16/512 | Serial 8-bit | 3 | 3.6 | 0.1 |
