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Publication Order Number :

LC74731W_32W/D

www.onsemi.com

© Semiconductor Components Industries, LLC, 2015

March 2015 - Rev. 1

ORDERING INFORMATION

See detailed ordering and shipping information on page 39 of this data sheet.

LC74731W

LC74732W

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

 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

CMOS LSI

On-Screen Display Controller

SPQFP64 10x10 / SQFP64