{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"24CW640T-I/MUY","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"24CW640T-I-MUY","canonicalUrl":"https://icboms.com/microchip/24CW640T-I-MUY","factsUrl":"https://icboms.com/api/mcp/products/24CW640T-I%2FMUY","rawCanonicalId":null},"summary":{"shortDescription":"Microchip 24CW640T-I/MUY, 64Kbit I²C serial EEPROM, 1 MHz clock, 450 ns access, 1.6 V to 5.5 V supply, 8K x 8 organization, 8-UDFN (2x3 mm) exposed pad, -40°C to 85°C.","salesMarkdown":"## 64 Kbit serial EEPROM for multi-voltage I²C buses The Microchip 24CW640T-I/MUY is a 64 Kbit serial EEPROM organized as 8K x 8 bits, accessed over an I²C interface running at up to 1 MHz. The 450 ns access time is the read-cycle latency from the last address clock-in to the first data bit out — tight enough for most MCU polling loops, but budget a wait state if the host I²C peripheral expects immediate data. Write-cycle time per page is 5 ms, typical for this density class. ## Active lifecycle — no end-of-life pressure Microchip lists the 24CW640T-I/MUY as an Active product. The series is 24CW, and the suffix -I/MUY indicates the industrial temperature grade and the 8-UDFN package variant. ROHS3 compliance is confirmed. ## Package and footprint — 8-UDFN with exposed pad The 8-UDFN (2x3 mm) package has an exposed pad on the bottom. For the PCB layout, the pad should be connected to ground (or left floating if the datasheet recommends it) and stitched with vias to the inner ground plane for heat dissipation during page-write cycles. The part is surface-mount only. No special bake is required beyond standard MSL handling — verify the MSL level on the reel label before reflow.","metaTitle":"Microchip 24CW640T-I/MUY 64Kbit I²C EEPROM, 1 MHz, 8-UDFN","metaDescription":"64Kbit serial EEPROM, I²C interface at 1 MHz, 450 ns access, 1.6 V to 5.5 V supply, industrial temp -40°C to 85°C, 8-UDFN (2x3 mm) package.","metaKeywords":null},"attributes":{"series":"24CW","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Interface & Transceivers"],"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-UFDFN Exposed Pad","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-UDFN (2x3)","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.38","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.38000","currency":"USD"},{"qty":3300,"price":"$1.32000","currency":"USD"}]},"links":{"datasheetUrl":"https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/24CW16X-24CW32X-24CW64X-24CW128X-Data-Sheet-20005772B.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/24CW640T-I-MUY","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-MUY 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}}