{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HD4074408S01","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"HD4074408S01","canonicalUrl":"https://icboms.com/renesas/HD4074408S01","factsUrl":"https://icboms.com/api/mcp/products/HD4074408S01","rawCanonicalId":null},"summary":{"shortDescription":"Renesas HD4074408S01, 4-bit OTPROM microcontroller, 9 MHz, Bulk package, Active lifecycle.","salesMarkdown":"## 4-bit OTPROM MCU at 9 MHz — what it is and where it fits The Renesas HD4074408S01 is a 4-bit microcontroller with one-time-programmable (OTPROM) memory, clocked at 9 MHz. This is a legacy architecture from the 4-bit MCU era, designed for cost-sensitive, fixed-function embedded control where the program is burned once and never updated. Typical applications include appliance controllers, remote controls, simple timer/logic sequencers, and low-end automotive body modules that do not require field firmware upgrades. ## OTP memory: no field updates possible Because the program memory is OTPROM, the firmware is locked at the factory or programming house. There is no in-system reprogramming, no firmware updates, and no field patching. This makes the HD4074408S01 a fit only for designs where the code is finalised before production and the product lifecycle matches the programmed firmware. Any bug or feature change means scrapping the programmed devices and burning new ones. ## Active lifecycle — still in production The HD4074408S01 carries an Active product status. For BOM planning, this means no imminent obsolescence risk. ## Bulk packaging — plan for tube or tray handling For automated pick-and-place lines, this may require a tube feeder or tray handler. Verify with your assembly house that the Bulk format is compatible with your line setup.","metaTitle":"Renesas HD4074408S01 4-bit OTPROM MCU, 9 MHz, Active","metaDescription":"Renesas HD4074408S01 4-bit OTPROM microcontroller, 9 MHz clock. Active lifecycle, Bulk packaging.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.52","stockQuantity":0,"priceTiers":[{"qty":19,"price":"$16.52000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/81b288a000c10baf43c2725c1ec2f1d6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can I replace HD4074408S01 with a modern MCU?","answer":"A direct pin-compatible replacement is not listed. Modern 32-bit MCUs such as the Renesas R5F56609HGFP#30 (RX600 series, 120 MHz, 32-bit, Flash) offer vastly more performance and memory but require a board redesign and firmware port. The HD4074408S01 is a 4-bit OTPROM part; any replacement will involve a new PCB layout and software rewrite."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/HD4074408S01","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/HD4074408S01 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}