Description

The MB90092 is a display controller used for displaying text and graphics on a TV screen. It integrates display memory (VRAM), a font memory interface, and a video signal generator, minimizing the need for additional external components. The MB90092 supports two screens, namely the main screen and the sub-screen, which can be displayed independently or overlaid on top of each other. The main screen has a resolution of 24 characters by 12 lines, while the sub-screen can be configured as either 24 characters by 12 lines or up to 32 characters by 16 lines. The device supports both normal characters (24 by 32 dots) and graphic characters (8 × 32-dot) that can be displayed in eight different colors. The MB90092 can utilize up to 16384 types of characters, including normal and graphic characters, and can control up to 16M bits of external font memory. The device also features various video signal outputs and inputs for composite video signals, Y/C-separated video signals, and RGB digital output.

Specifications and features

• Display controller for text and graphics on a TV screen
• Integrated display memory (VRAM) and font memory interface
• Main screen resolution: 24 characters by 12 lines
• Sub-screen resolution: 24 characters by 12 lines or 32 characters by 16 lines
• Support for normal characters (24 by 32 dots) and graphic characters (8 × 32 dots) in eight different colors
• Up to 16384 types of characters supported, including normal and graphic characters
• Control of up to 16M bits of external font memory
• Video signal outputs: composite video signal, Y/C-separated video signal, RGB digital output
• Video signal inputs for superimpose display over composite video signals and Y/C-separated video signals

Application Scenarios

The MB90092 is commonly used in various applications where text and graphics need to be displayed on a TV screen. Some possible application scenarios include:

• TV show production and broadcast
• Video game consoles and interactive entertainment systems
• Interactive kiosks and digital signage displays
• Industrial control systems with graphical user interfaces
• Information display in public spaces such as airports and shopping malls

Comparison

• Integrated display memory and font memory interface reduce the need for external components
• Supports both normal and graphic characters in various color options
• Flexible screen configurations allow for versatile display options
• Can utilize up to 16384 types of characters, providing ample customization possibilities
• Video signal inputs and outputs offer compatibility with different video systems

• Requires external font memory for optimal performance
• May not support advanced video signal formats
• Limited screen resolution compared to some high-end display controllers
• Not suitable for applications requiring high-speed graphics rendering