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LC74731W Datasheet, PDF (1/39 Pages) Sanyo Semicon Device – On-Screen Display Controller
LC74731W
LC74732W
CMOS LSI
On-Screen Display Controller
www.onsemi.com
Overview
The LC74731W and LC74732W are on-screen display CMOS ICs that
display characters and patterns on a TV screen under the control of a
microcontroller. These ICs display 16  16-dot characters and up to 12 lines
of text with 24 characters per line.
Features
SPQFP64 10x10 / SQFP64
 Text structure : 12 lines 24 characters (Up to 288 characters)
 Character format : 16 16 dots
Character display clock frequency : about 9 MHz
 Character sizes : Four sizes each in the horizontal and vertical directions with the size set in line units.
 Number of characters supported :
LC74731W : 256 (internal)
LC74732W : 512 (internal)
Up to 8192 using an external ROM (for Japanese)
[Reference] JIS X0298 (1990) : 6877 characters
JIS level 1 kanji : 2965 characters
JIS level 2 kanji : 3388 characters
Special characters : 524 characters
 Display start positions : 128 positions each in the horizontal and vertical directions
 Blinking, reverse video, reversed blinking, and character outlining : May be specified in individual character units.
 Blinking types : Two types with periods of about 1.0 and about 0.5 seconds.
 Blanking : The whole font area (16 16 dots) can be blanked in line units
(Four types : no blanking, character size blanking, character plus outlining size blanking, and whole area up to
adjacent character blanking)
 Line spacing control : Zero to seven scan lines, in line units
 Character color : Eight colors in character units (in internal synchronization mode) : 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and white)
 Character background color : Eight colors (in internal synchronization mode) : 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and transparent)
 Screen background color : Eight colors (in internal synchronization mode) : 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and white)
 External control inputs : Serial interface with an 8-bit data size.
 Built-in sync separator circuit
 Video outputs : NTSC, PAL, PALM, PALN, NTSC 4.43, and PAL 60 composite video signal outputs
 Supports Y/C input
ORDERING INFORMATION
See detailed ordering and shipping information on page 39 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
March 2015 - Rev. 1
Publication Order Number :
LC74731W_32W/D