Overview

Character and pattern display control IC for TV screen. A character dot configuration is 12 × 18. The IC has 64 internal character ROMs and displays up to 288 characters (24 characters × 12 lines) on a TV screen. It can be controlled by a microcontroller.

Function and Applications

? Screen Display Mode: 24 characters × 12 lines

? Number of display characters: 288 characters (max.)

? Display control ROM (line ROM):

64 lines (line control: 24-character line)

? Display RAM:

176 characters (used for specifying variable characters)

? Character configuration:

12 (horizontal) × 18 (vertical) dots

? Number of character types: 64 types

? Character size:

Horizontal direction: 4, Vertical direction: 4

? Display start position:

Horizontal direction: 64, Vertical direction: 64

? Blinking mode: Character blinking

? Display ON/OFF mode:

ON/OFF cycle; 1.0 second and 0.5 second. Duty cycle;

25, 50 and 75

? Blanking mode: Entire font area (12 × 18 dots)

? Background colors: 4 (at internal SYNC. operation mode)

? External control input: Serial data input

? Synchronous signal: Selectable: Internal and External

? Internal SYNC. separation circuit available.

? Video output: NTSC-format composite output

? Superimpose function:

Superimposes character output on composite video

output