NEC D553C

NEC D553C is a vintage 4-bit microprocessor typically found in a 42-pin DIP (Dual In-line Package). While "315" is often a specific mask ROM code or batch identifier for these microcontrollers, the base D553C series was widely used in consumer electronics, such as VCRs and television tuning systems, during the 1980s.

Technical Details

• Type: 4-bit Microcomputer/Microcontroller.
• Package: 42-pin Dual In-line Package (DIP).
• Key Features: It typically includes built-in RAM and ROM. Notably, it is known for having high-voltage outputs (approx. +/- 45V) specifically designed to drive Vacuum Fluorescent Displays (VFD).
• Markings: The "8436P5" is a date/batch code, likely indicating it was manufactured in the 36th week of 1984.