MB88303 / 9724 M76

The Fujitsu MB88303 is an NMOS Television Display Controller typically found in older TV and CRT systems. The "9724 M76" marking on your specific chip indicates a manufacturing date (likely the 24th week of 1997) and a lot/batch code. 

Technical Details

The MB88303 is designed as a video signal processor and display controller with the following specifications: 

• Function: NMOS Television Display Controller.
• Package: 22-pin Plastic Dual In-line Package (DIP).
• Display Capability: Includes a character generator ROM ( 448 x 8-bit) and display data RAM ( 180 x 7-bit).
• Visual Enhancements: Features automatic inter-dot filling for smoother text and black-level background output for better clarity.
• Power & Logic: Operates on a single +5V power supply and includes an on-chip clock generator for external RC networks.
• Operating Temp: Wide range from -30C to  +70C.