{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021B-15VC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021B-15VC","canonicalUrl":"https://icboms.com/infineon/CY7C1021B-15VC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021B-15VC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1021B-15VC, 1Mbit (64K x 16) Asynchronous SRAM, 15 ns Access Time, 4.5V ~ 5.5V Supply, Parallel Interface, 44-SOJ (0.400\", 10.16mm Width) Surface Mount, 0°C ~ 70°C Operating Temperature.","salesMarkdown":"## 15 ns access time — timing closure for a 66 MHz bus That 15 ns figure is the address-to-data valid delay; if your controller's memory interface has a 10 ns setup window, you've got 5 ns of PCB trace and clock jitter margin to work with. The 15 ns write cycle time matches the read cycle, so back-to-back transactions at 66 MHz are single-cycle — no dead bus turnaround. If your BOM has already migrated to 3.3 V or lower, this SRAM needs a separate 5 V rail or a level translator on the address/data bus. The 44-SOJ package is a JEDEC-standard footprint shared with other 5 V asynchronous SRAMs of the same density, so a board layout swap to a different 64K x 16 5 V part is usually a drop-in — but not to a 3.3 V variant without a re-spin. ## Obsolete — plan your BOM around surplus sourcing Infineon (formerly Cypress) has ended production; there is no factory lead time, no last-time-buy window remaining. Any stock in the channel is new-old-stock or surplus inventory. That rules out outdoor telecom cabinets, automotive under-hood, or any unheated industrial enclosure.","metaTitle":"CY7C1021B-15VC Infineon 1Mbit Async SRAM, 15 ns, 44-SOJ","metaDescription":"CY7C1021B-15VC Infineon 1Mbit (64Kx16) asynchronous SRAM, 15 ns access time, 4.5V-5.5V, 44-SOJ, 0°C-70°C.","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":"Tube","Technology":"SRAM - Asynchronous","Access Time":"15 ns","Memory Size":"1Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"44-BSOJ (0.400\\\", 10.16mm Width)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C1021","Memory Organization":"64K x 16","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"44-SOJ","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/82c7b961e3b5b1ab441dd2f6a6002ed8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1021B-15VC obsolete?","answer":"Yes, the CY7C1021B-15VC is listed as Obsolete by Infineon. No factory orders are accepted. Any available units are new-old-stock or surplus inventory sourced through the independent channel."},{"question":"What is the replacement for CY7C1021B-15VC?","answer":"Infineon has not published an official successor order code for the CY7C1021B-15VC. Qualification testing on your board is required before committing the BOM."},{"question":"What is the difference between CY7C1021B-15VC and CY7C1021B-15VI?","answer":"All other specifications — 1 Mbit density, 64K x 16 organization, 15 ns access time, 4.5V-5.5V supply — are identical between the two."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021B-15VC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021B-15VC 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}}