{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BR93G66FVM-3GTTR","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BR93G66FVM-3GTTR","canonicalUrl":"https://icboms.com/rohm/BR93G66FVM-3GTTR","factsUrl":"https://icboms.com/api/mcp/products/BR93G66FVM-3GTTR","rawCanonicalId":null},"summary":{"shortDescription":"ROHM BR93G66FVM-3GTTR, EEPROM, 4Kbit (256 x 16), Microwire, 3 MHz, 1.7V~5.5V, -40°C~85°C, 8-MSOP.","salesMarkdown":"## Avoid the wrong density — 4Kbit is for calibration data, not firmware The BR93G66FVM-3GTTR is a 4Kbit serial EEPROM from ROHM, organized as 256 x 16 bits, communicating over a Microwire interface at up to 3 MHz. This density tier is sized for storing calibration constants, serial numbers, or configuration parameters — not for firmware images or large data logs. ## Temperature grade — industrial range, not extended hot-spot It does not reach the 105°C or 125°C that some automotive-grade AEC-Q100 parts (like the BR93A46RFVT-WME2 or BR93H86RF-WCE2) carry, so for underhood or hot-plenum use, step up to those qualified parts. ## Write cycle time — 5 ms word/page, plan your firmware loop The write cycle time is 5 ms for both word and page operations. In a firmware routine that stores a parameter, budget a 5 ms polling wait or an interrupt timer — a tight loop that reads the status register too early will see a busy flag and waste cycles. ROHS3 compliant and marked active in production. For a production BOM that needs a non-volatile configuration memory, this part is a low-risk selection today.","metaTitle":"BR93G66FVM-3GTTR EEPROM, 4Kbit Microwire, 3 MHz, 8-MSOP","metaDescription":"ROHM BR93G66FVM-3GTTR 4Kbit EEPROM, Microwire interface at 3 MHz, 1.7-5.5V, -40°C to 85°C, 8-MSOP. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"EEPROM","Memory Size":"4Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"8-VSSOP, 8-MSOP (0.110\\\", 2.80mm Width)","Clock Frequency":"3 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Microwire","Voltage - Supply":"1.7V ~ 5.5V","Memory Organization":"256 x 16","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-MSOP","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.51","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.51000","currency":"USD"},{"qty":10,"price":"$0.50400","currency":"USD"},{"qty":25,"price":"$0.46760","currency":"USD"},{"qty":50,"price":"$0.46500","currency":"USD"},{"qty":100,"price":"$0.41290","currency":"USD"},{"qty":250,"price":"$0.40768","currency":"USD"},{"qty":500,"price":"$0.40150","currency":"USD"},{"qty":1000,"price":"$0.39078","currency":"USD"},{"qty":3000,"price":"$0.37069","currency":"USD"},{"qty":6000,"price":"$0.35129","currency":"USD"},{"qty":15000,"price":"$0.34513","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/bbdb0ae482318cddb4d19cfba10c19a6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will BR93G66FVM-3GTTR drop into a panel that was specified around BR93G46FVM-3AGTTR without rewiring?","answer":"Yes. Both parts share the same 8-MSOP footprint, supply voltage range, and Microwire interface. The only difference is density: 4 Kbit vs 1 Kbit. The firmware must be updated to address the larger memory array, but the PCB layout does not change."},{"question":"What compliance documentation does this part carry?","answer":"The part is ROHS3 compliant. No UL or IEC certification is listed in the available documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BR93G66FVM-3GTTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BR93G66FVM-3GTTR 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}}