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LC74798 Datasheet, PDF (1/32 Pages) Sanyo Semicon Device – On-Screen Display Controller IC | |||
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Ordering number : EN5833
CMOS IC
LC74798, 74798M
On-Screen Display Controller IC
Overview
The LC74798 and LC74798M are on-screen display
controller CMOS ICs that display characters and patterns
on the TV screen under microprocessor control. These ICs
include a built-in PDC/VPS/UDT interface circuit.
Features
⢠Display format: 24 characters by 12 rows (Up to 288
characters)
⢠Character format: 12 (horizontal) à 18 (vertical) dots
⢠Character sizes: Three sizes each in the horizontal and
vertical directions
⢠Characters in font: 128
⢠Initial display positions: 64 horizontal positions and
64 vertical positions
⢠Blinking: Specifiable in character units
⢠Blinking types: Two periods supported: 1.0 second and
0.5 second
⢠Blanking: Over the whole font (12 à 18 dots)
⢠Background color
â 8 colors (internal synchronization mode): 4fSC
â 6 colors (internal synchronization mode): 2fSC
â Blue background only: NTSC
⢠Line background color
â Three lines can be set up.
â 8 line background colors (in internal synchronization
mode): 4fSC
â 6 line background colors (in internal synchronization
mode): 2fSC
⢠External control input: 8-bit serial input format
⢠On-chip sync separator and AFC circuits
⢠On-chip PDC/VPS/UDT interface circuit
⢠Video outputs: PAL and NTSC format composite video
outputs
⢠Package: DIP30SD (400 mil)
MFP30S (375 mil)
Package Dimensions
unit: mm
3193-DIP30SD
[LC74798]
unit: mm
3216-MFP30S
[LC74798M]
SANYO: DIP30SD
SANYO: MFP30S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51898RM (OT) No. 5833-1/32
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