Ordering number : ENN*6526

63000RM (OT) No. 6526-1/38

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

Package Dimensions

Preliminary

LC74731W,74732W

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

On-Screen Display Controller

CMOS IC

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

1.25

0.5

1.25

0.18

12.0

116

17

32

33

48

49

64

10.0

0.5

0.5

0.15

SANYO: SQFP64

[LC74731W,74732W]