Overview

The LC74789, LC74789M, and LC74789JM are on-

screen display controller CMOS ICs that display

characters and patterns on the TV screen under

microprocessor control. These ICs 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: 256 (254 characters, one spacing

character, and one transparent spacing character)

• 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: 8 colors (internal synchronization

• Line background color

— Can be set for 3 lines

— Line background color: 8 colors (internal

• External control input: 8-bit serial input format

• On-chip sync separator circuit

• Video outputs: NTSC, PAL, PAL-N, PAL-M, NTSC

4.43, and PAL60 format composite video outputs

• Package

— 24-pin plastic DIP-24S (300 mil)

— 24-pin plastic MFP-24 (375 mil)

— 24-pin plastic MFP-24S (300 mil)

Package Dimensions

unit: mm

3067-DIP24S

unit: mm

3045B-MFP24

unit: mm

3112-MFP24S

CMOS IC

30698HA (OT) No. 5732-1/23

SANYO: DIP24S

[LC74789]

SANYO: MFP24

[LC74789M]

SANYO: MFP24S

[LC74789JM]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

On-Screen Display Controller

LC74789, 74789M, 74789JM

Ordering number : EN5732A