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LC74794 Datasheet

  • LC74794

  • On-Screen Display Controller LSI

  • 30頁

  • SANYO

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Ordering number : EN*5557
CMOS LSI
LC74794, 74794M
On-Screen Display Controller LSI
Preliminary
Overview
The LC74794 and LC74794M are CMOS LSIs for on-
screen display, a function that displays characters and
patterns on a TV screen under microprocessor control.
They feature a built-in PDC/VPS/UDT interface circuit.
These LSIs support 12
脳
18 dot characters and can display
12 lines by 24 characters of text.
Package Dimensions
unit: mm
3196-DIP30SD
[LC74794]
Features
鈥?Display format: 24 characters by 12 rows (Up to 288
characters)
鈥?Character format: 12 (horizontal)
脳
18 (vertical) dots
鈥?Character sizes: Three sizes each in the horizontal and
vertical directions
鈥?Characters in font: 128
鈥?Initial display positions: 64 horizontal positions and 64
vertical positions
鈥?Blinking: Specifiable in character units
鈥?Blinking types: Two periods supported: 1.0 second and
0.5 second
鈥?Blanking: Over the whole font (12
脳
18 dots)
鈥?Background color
鈥?Background coloring: 8 colors (internal synchronization
mode): 4fsc
鈥?Background coloring: 6 colors (internal synchronization
mode): 2fsc
鈥?Blue background only: NTSC
鈥?Line background color
鈥?Can be set for 3 lines
鈥?Line background coloring: 8 colors (internal synchro-
nization mode): 4fsc
鈥?Line background coloring: 6 colors (internal synchro-
nization mode): 2fsc
鈥?External control input: 8-bit serial input format
鈥?On-chip sync separator and AFC circuits
鈥?PDC/VPS/UDT interface circuit
鈥?Composite video output in the PAL or NTSC format
SANYO: DIP30SD
unit: mm
3216A-MFP30S
[LC74794M]
SANYO: MFP30S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
22897HA (OT)/No. 5557-1/30

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