
Overview
The LC74785 and LC74785M are on-chip EDS CMOS
LSIs for on-screen display, a function that displays
characters and patterns on a TV screen under
microprocessor control. These LSIs support 12
× 18 dot
characters and can display 12 lines by 24 characters of
text.
Features
 Display format: 24 characters by 12 rows (Up to 288
characters)
 Character format: 12 (horizontal)
× 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: About 1.0
second and about 0.5 second
 Blanking: Over the whole font (12
× 18 dots)
 Background color
— Background coloring: 8 colors (internal synchronization
mode): 4fsc
— Background coloring: 6 colors (internal synchronization
mode): 2fsc
 Line background color
— Can be set for 3 lines
— Line background coloring: 8 colors (internal synchro-
nization mode): 4fsc
— Line background coloring: 6 colors (internal synchro-
nization mode): 2fsc
 External control input: 8-bit serial input format
 On-chip sync separator circuit
 EDS support
 Video output
— NTSC-format composite output
 Package
24-pin plastic DIP (300 mil)
24-pin plastic SOP (375 mil)
Package Dimensions
unit: mm
3067-DIP24S
unit: mm
3045B-MFP24
CMOS LSI
Ordering number : EN5520A
63097HA (OT) No. 5520-1/24
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
On-Screen Display Controller LSI
LC74785, LC74785M
SANYO: DIP24S
[LC74785]
SANYO: MFP24
[LC74785M]