{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"M24C64-FMB6TG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"M24C64-FMB6TG","canonicalUrl":"https://icboms.com/stmicroelectronics/M24C64-FMB6TG","factsUrl":"https://icboms.com/api/mcp/products/M24C64-FMB6TG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics M24C64-FMB6TG, 64Kbit I²C EEPROM, 1 MHz clock, 450 ns access, 8K x 8 organization, 1.7V-5.5V supply, -40°C to 85°C, 8-UFDFPN (2x3) package, Tape & Reel.","salesMarkdown":"## 64Kbit I²C EEPROM in a 2x3 mm package The STMicroelectronics M24C64-FMB6TG is a 64Kbit serial EEPROM with an I²C interface, organized as 8K x 8 bits. It supports a 1 MHz clock frequency and a 450 ns access time, with a write cycle time of 5 ms per word or page. The wide supply range from 1.7V to 5.5V lets it bridge 1.8V and 3.3V or 5V logic domains without a level shifter. ## Obsolete — plan the replacement now STMicroelectronics lists the M24C64-FMB6TG as Obsolete. That means no further production runs; the only channel is surplus or broker inventory. If you're qualifying a new build, look at the current-generation M24C64-W or M24C64-R series parts from ST — they share the same 64Kbit I²C EEPROM core and are available in similar UFDFPN packages. For an existing BOM, verify the exact footprint and supply voltage before swapping; the newer parts maintain the 1.7V to 5.5V range and 1 MHz clock. ## 1.7V to 5.5V supply — one part for mixed-voltage rails The supply range covers 1.8V, 2.5V, 3.3V, and 5V rails without an external regulator. That simplifies BOM consolidation when the same EEPROM is used across boards with different logic families. ## Surface-mount footprint and handling MSL level is not stated in this listing, but typical for this package class is MSL 1 or 3 — if the reel's moisture barrier bag is compromised, a bake before reflow is prudent.","metaTitle":"STMicroelectronics M24C64-FMB6TG 64Kbit I²C EEPROM, 1 MHz","metaDescription":"STMicroelectronics M24C64-FMB6TG 64Kbit (8K x 8) I²C EEPROM, 1 MHz clock, 450 ns access, 1.7V-5.5V supply, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tape & Reel (TR)","Technology":"EEPROM","Access Time":"450 ns","Memory Size":"64Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"8-UFDFN Exposed Pad","Product Status":"Obsolete","Clock Frequency":"1 MHz","lifecycle_stage":"eol_hot","Memory Interface":"I²C","Voltage - Supply":"1.7V ~ 5.5V","Base Product Number":"M24C64","Memory Organization":"8K x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-UFDFPN (2x3)","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/591d2bfeb0cf0071b7c2780820acd1bf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is M24C64-FMB6TG obsolete?","answer":"Yes, STMicroelectronics has marked the M24C64-FMB6TG as Obsolete. No new production is planned; the part is available only through surplus or independent distribution channels."},{"question":"What is the replacement for M24C64-FMB6TG?","answer":"ST's current M24C64-W or M24C64-R series parts are the functional successors. They retain the 64Kbit I²C EEPROM core, 1 MHz clock, and 1.7V to 5.5V supply range. Check the package variant (UFDFPN) and pinout compatibility with your layout before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/M24C64-FMB6TG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/M24C64-FMB6TG when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T11:52:58.468Z","lastPublished":"2026-07-16T11:52:58.468Z","indexable":true}}