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LC74725M - On-Screen Display Controller LSI

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General Description

Ground connection (digital system ground) Connections for the external crystal and capacitors used to form a crystal oscillator for internal synchronizing signal generation.

Alternatively, these pins can be used for external clock input (2fsc or 4fsc).

Switches between external clock input mode and crystal oscil

Overview

Ordering number : EN5213A CMOS LSI LC74725, 74725M On-Screen Display Controller LSI Overview The LC74725 and LC74725M are built-in EDS on-screen display controller CMOS LSI products that display characters and patterns on a TV screen under microprocessor control.

The characters displayed have an 8 × 8 dot format, and a dot interpolation function is provided.

These LSIs can display ten lines of 24 characters each.

Key Features

  • Display format: 24 characters by 10 lines (up to 240 characters).
  • Character format: 8 (horizontal) × 8 (vertical) dots (interpolation function provided).
  • Character sizes: Two horizontal and two vertical sizes.
  • Characters in font: 64 characters.
  • Initial display positions: 64 horizontal positions and 64 vertical positions.
  • Blinking: Specifiable on a per-character basis.
  • Blinking types: Two periods, 1.0 second and 0.5 second.

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