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)
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
On-Screen Display ControllerENA2330/D (412kB)0Jul, 2013
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SPQFP80 12x12 / SQFP80131AL (66.0kB)A
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LC74735YWS-8A43-HObsoletePb-free Halide freeSPQFP-80 / SQFP-80131AL4Tray Foam60
LC74735YWS-8A43-SH-HActivePb-free Halide freeSPQFP-80 / SQFP-80131AL4Tray JEDEC595$6.6306
Specifications
ProductCharacter FormatNumber of Characters Supported (Internal)Number of ColorsControl InputSupply Voltage Min (V)Supply Voltage Max (V)Operating Drain Current Max (A)
LC74735YWS-8A43-SH-H12 x 18 24 x 3251216/512Serial 8-bit33.60.1
On-Screen Display Controller (412kB) LC74735YW
SPQFP80 12x12 / SQFP80 LC75886PW