{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"24CW640T-I/SN","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"24CW640T-I-SN","canonicalUrl":"https://icboms.com/microchip/24CW640T-I-SN","factsUrl":"https://icboms.com/api/mcp/products/24CW640T-I%2FSN","rawCanonicalId":null},"summary":{"shortDescription":"Microchip 24CW series, 24CW640T-I/SN, 64Kbit I²C EEPROM, 1 MHz clock, 450 ns access, 1.6V to 5.5V supply, 8K x 8 organization, -40°C to 85°C, 8-SOIC.","salesMarkdown":"It operates from a single 1.6V to 5.5V supply, making it suitable for both low-voltage battery-powered designs and legacy 5V buses. The 1 MHz clock frequency supports fast-mode plus I²C, and the 450 ns access time keeps read latency low for calibration or configuration data. ## Supply voltage and bus compatibility It is compatible with 5V I²C buses as long as the pull-up resistors reference the EEPROM's VCC — a common integration point for mixed-voltage systems. ## Write cycle time and endurance The 24CW series is rated for 1 million write cycles and 200-year data retention per Microchip's standard EEPROM qualification — sufficient for frequent calibration updates or serial-number storage over a decade-long product life.","metaTitle":"Microchip 24CW640T-I/SN 64Kbit I²C EEPROM, 1 MHz, 8-SOIC","metaDescription":"Microchip 24CW640T-I/SN 64Kbit I²C EEPROM with 1 MHz clock, 1.6V to 5.5V supply, 450 ns access, 8-SOIC. Active lifecycle.","metaKeywords":null},"attributes":{"series":"24CW","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Series":"24CW","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)","Clock Frequency":"1 MHz","lifecycle_stage":"eol_hot","Memory Interface":"I²C","Voltage - Supply":"1.6V ~ 5.5V","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":"$0.46","priceTiers":[{"qty":1,"price":"$0.46000","currency":"USD"},{"qty":25,"price":"$0.43520","currency":"USD"},{"qty":3300,"price":"$0.43500","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/24CW640T-I%2FSN/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 24CW640T-I/SN?","answer":"The AT24CS64-MAHM-T is a 64 Kbit I²C EEPROM with similar density and a 1 MHz interface, but its supply range starts at 1.7V and access time is 550 ns versus 450 ns. The 24CW640T-I/SN's 1.6V minimum gives an edge for single-cell battery designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/24CW640T-I-SN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/24CW640T-I-SN when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}