Active 4-bit OTPROM MCU for legacy BOM support
The Renesas HD4074339S is a 4-bit microcontroller with on-chip OTPROM program memory, still listed as Active in production status. For a BOM that already carries this part, the lifecycle status means no immediate last-time-buy pressure — the part remains orderable through distribution channels. This is a 4-bit architecture MCU, a class used in cost-sensitive embedded control applications where 8-bit or 32-bit overhead is unnecessary — think appliance keypads, remote controls, or simple sensor interfaces that execute a fixed firmware routine.
Sourcing posture and procurement note
The part ships in Bulk packaging, which is the standard tube or tray format for through-hole or large-SMT MCUs — no tape-and-reel fee, but the per-unit handling cost at the contract manufacturer may differ from reel-fed parts.