{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"M95640-DWDW4TP/K","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"M95640-DWDW4TP-K","canonicalUrl":"https://icboms.com/stmicroelectronics/M95640-DWDW4TP-K","factsUrl":"https://icboms.com/api/mcp/products/M95640-DWDW4TP%2FK","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics M95640-DWDW4TP/K automotive EEPROM, 64Kbit, SPI, 20 MHz, 2.5-5.5 V, -40°C to 145°C, 8-TSSOP, Tape & Reel.","salesMarkdown":"## 64 Kbit SPI EEPROM for under-hood temperatures The STMicroelectronics M95640-DWDW4TP/K is a 64 Kbit serial EEPROM on the SPI bus, organized as 8 K x 8 bits. A sensor module or ECU sitting near the exhaust manifold on a summer day sees 125°C ambient; this part still has 20°C of margin before the upper limit. The SPI clock rate reaches 20 MHz, giving a read throughput of 20 Mbit/s — fast enough to load calibration tables or boot code without stalling the host controller. ## Package and board-fit — 8-TSSOP, field-swappable The 1.27 mm pin pitch is hand-solderable with a fine-tip iron — no hot-air station required for a field swap if you have steady hands and a flux pen. Available in Tape & Reel (TR) for pick-and-place lines or Cut Tape (CT) for prototype and low-volume builds. The ROHS3 compliance means no exemption expiry risk on EU or global BOMs — the part is free of restricted substances per the current directive. ## Lifecycle and supply — active, no LTB pressure No stock-holding claim — quoted to order per RFQ. ## How it compares to the 1.8 V sibling If the design is 1.8 V only, the DRDW3TP/K is the drop-in. The temperature grade also differs: the DWDW4TP/K reaches 145°C, while the DRDW3TP/K is rated to 125°C. For an engine-bay ECU that sees 130°C under load, the DWDW4TP/K is the only fit.","metaTitle":"STMicroelectronics M95640-DWDW4TP/K EEPROM, 64Kbit, SPI","metaDescription":"STMicroelectronics M95640-DWDW4TP/K automotive EEPROM, 64Kbit SPI, -40°C to 145°C, 8-TSSOP. Active production, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"EEPROM","Memory Size":"64Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","Clock Frequency":"20 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI","Voltage - Supply":"2.5V ~ 5.5V","Memory Organization":"8K x 8","Operating Temperature":"-40°C ~ 145°C (TA)","Supplier Device Package":"8-TSSOP","Write Cycle Time - Word, Page":"4ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.18","priceTiers":[{"qty":1,"price":"$1.18000","currency":"USD"},{"qty":10,"price":"$1.07700","currency":"USD"},{"qty":25,"price":"$1.04800","currency":"USD"},{"qty":50,"price":"$1.04260","currency":"USD"},{"qty":100,"price":"$0.93200","currency":"USD"},{"qty":250,"price":"$0.92928","currency":"USD"},{"qty":500,"price":"$0.91524","currency":"USD"},{"qty":1000,"price":"$0.89092","currency":"USD"},{"qty":4000,"price":"$0.89093","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1a7eb616cf75e496568facd5fb93f8aa.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/M95640-DWDW4TP%2FK/alternatives.json"},"ai":{"faq":[{"question":"Will M95640-DWDW4TP/K drop into a board designed for M95640-DRDW3TP/K?","answer":"The package is the same 8-TSSOP footprint, so the mechanical fit is identical. If the board is 1.8 V only, the DRDW3TP/K is the correct part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/M95640-DWDW4TP-K","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/M95640-DWDW4TP-K when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}