{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1270V18-400BZXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1270V18-400BZXC","canonicalUrl":"https://icboms.com/infineon/CY7C1270V18-400BZXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1270V18-400BZXC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1270V18-400BZXC, Synchronous DDR II SRAM, 36Mbit (1M x 36), 400 MHz clock, 1.7V–1.9V supply, 165-ball FBGA (15x17 mm), commercial temperature 0°C to 70°C, Tray.","salesMarkdown":"## 400 MHz DDR II SRAM — what the 1M x 36 width buys the design The 36-bit word width is a key differentiator: it matches a 36-bit bus (common with parity or ECC schemes) using a single device, avoiding the layout complexity and added capacitive load of pairing two 18-bit parts. Operating from a 1.7V to 1.9V supply, this part is a native 1.8V device, not a legacy 3.3V or 2.5V SRAM. That means the board needs a dedicated 1.8V rail for the SRAM core and I/O — no dropping in on an existing 2.5V plane. ## Obsolete — sourcing reality and the replacement question Cypress (now Infineon) no longer manufactures this part. Sourcing is limited to surplus and broker channels — independent distribution that holds remaining inventory from last-time-buy lots or overruns. Any stock available today is date-coded from the final production window, so verify date-code freshness and authenticity before committing a BOM line. The closest functional alternatives are other 1M x 36 DDR II SRAMs in a 165-FBGA package from the same generation — but ball-map compatibility is not guaranteed. A cross-reference search against the original Cypress portfolio is the first step; a full PCB layout review is the second. ## 165-ball FBGA footprint — what to check before ordering This part is supplied in a 165-ball FBGA (15x17 mm) package, mounted on the board as a surface-mount BGA. The 1.0 mm ball pitch requires careful PCB layout: via-in-pad or microvia fan-out is typical for the inner rows. Decoupling should follow the manufacturer's recommendation for 1.8V DDR-II SRAM — a 0.1 µF capacitor per supply pin pair, placed as close to the balls as the breakout allows. The commercial temperature rating means the part is not specified below 0°C or above 70°C ambient; if the system sees cold starts below freezing, this SRAM is outside its guaranteed operating range.","metaTitle":"Cypress CY7C1270V18-400BZXC 36Mbit DDR II SRAM, 400 MHz","metaDescription":"Cypress CY7C1270V18-400BZXC 36Mbit (1M x 36) Synchronous DDR II SRAM, 400 MHz clock, 1.8V supply, 165-FBGA. Obsolete.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tray","Technology":"SRAM - Synchronous, DDR II","Memory Size":"36Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"165-LBGA","Product Status":"Obsolete","Clock Frequency":"400 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"1.7V ~ 1.9V","Base Product Number":"CY7C1270","Memory Organization":"1M x 36","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"165-FBGA (15x17)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$51.6400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7016544070d3ffa3450211dd72b6e240.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C1270V18-400BZXC/alternatives.json"},"ai":{"faq":[{"question":"Is CY7C1270V18-400BZXC compatible with 1.8V systems?","answer":"Yes. The supply voltage range is 1.7V to 1.9V, making it a native 1.8V device. It is not compatible with 2.5V or 3.3V I/O without level translation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1270V18-400BZXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1270V18-400BZXC 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}}