{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C2565KV18-400BZI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C2565KV18-400BZI","canonicalUrl":"https://icboms.com/infineon/CY7C2565KV18-400BZI","factsUrl":"https://icboms.com/api/mcp/products/CY7C2565KV18-400BZI","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C2565KV18-400BZI, SRAM - Synchronous QDR II+, 72Mbit, 2M x 36, 400 MHz, 1.7V-1.9V, -40°C to 85°C, 165-FBGA.","salesMarkdown":"It clocks at 400 MHz, delivering back-to-back read and write transactions on separate buses without dead cycles — the defining feature of the QDR family. It comes in a 165-ball FBGA (13x15 mm) package, surface-mount only. This density and speed target networking gear — switches, routers, and base stations — where large lookup tables, packet buffers, or statistics counters need deterministic, high-throughput access. ## Obsolete — last-time-buy has passed The manufacturer has marked the CY7C2565KV18-400BZI as Obsolete. Any available stock is surplus or broker-channel material, and date-code provenance matters — verify the parts are genuine and within the original factory shelf life. ## 400 MHz clock — timing closure and bus margin At 400 MHz, the bus cycle time is 2.5 ns. The QDR II+ architecture uses separate read and write data ports, each clocked on both edges, so the effective data rate is 800 Mbps per pin. That puts tight demands on the PCB layout — controlled impedance, matched trace lengths, and clean supply decoupling within 1.7V to 1.9V. ## Industrial temperature grade — outdoor and enclosure environments The 1.7V to 1.9V core supply aligns with 1.8V-class FPGA I/O banks, which is the typical host interface for QDR SRAM in a networking design.","metaTitle":"CY7C2565KV18-400BZI Infineon SRAM, 72Mbit QDR II+, 400 MHz","metaDescription":"CY7C2565KV18-400BZI Infineon 72Mbit QDR II+ synchronous SRAM, 2M x 36, 400 MHz clock, 1.7V-1.9V supply, -40°C to 85°C, 165-FBGA.","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, QDR II+","Memory Size":"72Mbit","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":"CY7C2565","Memory Organization":"2M x 36","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"165-FBGA (13x15)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7591cfa4e2ba1302ee83d458939764e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for CY7C2565KV18-400BZI?","answer":"Infineon has not published a direct pin-compatible replacement for this QDR II+ part. For new designs, consider the later QDR IV or DDR SRAM families, which offer higher density and speed but require a different footprint and controller interface. For BOM-line fill, source the original part through surplus channels."},{"question":"Is CY7C2565KV18-400BZI compatible with a 1.8V supply?","answer":"Yes. The supply voltage range is 1.7V to 1.9V, which covers the nominal 1.8V rail used in most FPGA and ASIC designs. The core and I/O share the same supply, so no separate VDDQ is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C2565KV18-400BZI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C2565KV18-400BZI 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}}