AKAI MB88505H VPSDCD3

AKAI MB88505H VPSDCD3 is a 4-bit CMOS microcomputer. It is primarily used as a microcontroller in vintage audio and video equipment. This specific chip (part number MB88505H-663L) is a 42-pin DIP (Dual In-line Package) component. 

Key Specifications & Identification

• Manufacturer: Likely manufactured by Fujitsu (indicated by the "MB" prefix common to Fujitsu's 4-bit microcontroller series) and custom-programmed for AKAI.
• Architecture: 4-bit CMOS.
• Package Type: 42-pin DIP.
• Markings:
• AKAI: Brand name.
• VPSDCD3: Internal Akai part or project designation.
• MB88505H: Base model number for the microcontroller.
• 663L: Specific ROM mask/firmware version.
• 8815: Date code, indicating it was manufactured in the 15th week of 1988.