{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021B-15ZXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021B-15ZXCT","canonicalUrl":"https://icboms.com/infineon/CY7C1021B-15ZXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021B-15ZXCT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1021B-15ZXCT, asynchronous SRAM, 1Mbit (64K x 16), 15 ns access time, parallel interface, 4.5V-5.5V supply, 0°C-70°C, 44-TSOP II, Tape & Reel.","salesMarkdown":"No official successor is listed; the CY7C1021B-15ZXI variant shares the same base part number but differs in temperature grade (industrial vs. commercial), so verify pin-compatibility and timing before substituting. ## 64K x 16 organization and 15 ns timing The 64K x 16 organization provides a 16-bit wide data bus, which suits processors and controllers that access memory in 16-bit words. The asynchronous interface eliminates the need for a clock, simplifying board layout and timing closure — a key advantage when back-fitting a memory into an existing design without re-spinning the controller logic. ## Commercial temperature grade and package If your application sees extended temperatures or requires industrial qualification, the CY7C1021B-15ZXI (industrial temperature range) is the variant to cross-reference.","metaTitle":"CY7C1021B-15ZXCT Infineon SRAM, 1Mbit 15 ns 44-TSOP II","metaDescription":"Infineon CY7C1021B-15ZXCT asynchronous SRAM, 1Mbit (64K x 16), 15 ns access time, 4.5V-5.5V, 44-TSOP II.","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":"Tape & Reel (TR)","Technology":"SRAM - Asynchronous","Access Time":"15 ns","Memory Size":"1Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"44-TSOP (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-TSOP II","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0fb2bf1fb1bf1eaa7b1a14798a1f21cb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1021B-15ZXCT obsolete and what is a replacement?","answer":"Yes, the CY7C1021B-15ZXCT is obsolete per Infineon's lifecycle status. No direct official replacement is listed. For a drop-in alternative, search for other 64K x 16 asynchronous SRAMs in 44-TSOP II with 15 ns access time and 4.5V-5.5V supply."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021B-15ZXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021B-15ZXCT 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}}