NEC D650C

is a vintage 4-bit single-chip microcontroller primarily used as a CPU or controller in late 1970s and early 1980s electronics, such as the Roland TB-303 and TR-808 synthesizers.

Technical Details

The NEC D650C features:

• Architecture: 4-bit single-chip controller-oriented microcomputer.
• Package Type: Typically found in a DIP-40 or DIP-42 package.
• Programming: It is mask-programmable, meaning the software code was permanently loaded at the factory during manufacturing and cannot be reprogrammed by the user.