{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"M24C64-WMN6T","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"M24C64-WMN6T","canonicalUrl":"https://icboms.com/stmicroelectronics/M24C64-WMN6T","factsUrl":"https://icboms.com/api/mcp/products/M24C64-WMN6T","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics M24C64-WMN6T, 64Kbit I2C EEPROM, 8-SOIC, 2.5–5.5 V, -40°C to 85°C, 450 ns access time, 1 MHz clock.","salesMarkdown":"The STMicroelectronics M24C64-WMN6T is a 64 Kbit serial EEPROM with an I2C interface, organized as 8 K x 8 bits. The part is packaged in an 8-pin SOIC (3.90 mm body width) for surface-mount assembly. STMicroelectronics no longer manufactures this specific variant in production volumes. There is no LTB window to chase — the discontinuation has already taken effect. At 2.5 V the I2C bus timing still meets the 1 MHz clock spec, though the 450 ns access time is measured at the full supply — expect slightly longer read cycles at the low end. Storage temperature exceeds this range, but the device is not rated for continuous operation beyond 85°C ambient. ## I2C bus timing and write-cycle budget The 1 MHz I2C clock is the fast-mode plus rate, giving a theoretical 125 KB/s read throughput. The 450 ns access time is the random-read latency from the address byte to the first data byte — this matters for time-critical polling loops. Write-cycle time is 5 ms per page or word, so a full 64 Kbit rewrite takes roughly 320 ms if you page-write 16 bytes at a time. Budget that into your firmware state machine; the device does not acknowledge its own slave address during the internal write cycle.","metaTitle":"STMicroelectronics M24C64-WMN6T 64Kbit I2C EEPROM, 450 ns","metaDescription":"STMicroelectronics M24C64-WMN6T 64Kbit I2C EEPROM in SOIC-8, 2.5–5.5V, -40°C to 85°C, 450 ns access, 1 MHz clock.","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) Cut Tape (CT)","Technology":"EEPROM","Access Time":"450 ns","Memory Size":"64Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Obsolete","Clock Frequency":"1 MHz","lifecycle_stage":"eol_hot","Memory Interface":"I²C","Voltage - Supply":"2.5V ~ 5.5V","Base Product Number":"M24C64","Memory Organization":"8K x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f80a2f163f84bd6e64a778a5e4f1c6d9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/M24C64-WMN6T/alternatives.json"},"ai":{"faq":[{"question":"What is the direct replacement for M24C64-WMN6T?","answer":"STMicroelectronics does not list a single direct replacement order code for the M24C64-WMN6T. The base product number M24C64 covers multiple active ordering codes in the same 8-pin SOIC package with identical die and I2C interface. Check the M24C64 family for a pin-compatible active variant; the memory organization, supply range, and temperature grade are consistent across the family."},{"question":"Can M24C64-WMN6T operate at 2.5V?","answer":"It will operate at 2.5 V, though the I2C bus timing and access time may shift slightly from the nominal values measured at higher supply voltages."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/M24C64-WMN6T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/M24C64-WMN6T 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}}