{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021BN-15ZXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021BN-15ZXCT","canonicalUrl":"https://icboms.com/infineon/CY7C1021BN-15ZXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021BN-15ZXCT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C1021BN-15ZXCT asynchronous parallel SRAM, 1Mbit (64K x 16), 15 ns access time, 4.5V-5.5V supply, 0°C to 70°C, 44-TSOP II, Tape & Reel.","salesMarkdown":"## 44-TSOP II footprint and 5V supply rail The CY7C1021BN-15ZXCT: The tape-and-reel format suits high-volume pick-and-place; typical MSL for TSOP is level 3, so a bake before reflow is needed if the seal time has been exceeded. Do not connect to a 3.3 V memory bus without a level translator; the inputs are not 5 V tolerant at 3.3 V Vdd. ## 15 ns access time and 64K x 16 organization Rated for 15 ns access time — this is the time from address valid to data valid on the bus. For a 16-bit MCU or MPU running at 40 MHz (25 ns cycle), the 15 ns access leaves 10 ns for address setup, hold, and board trace delay. The write cycle time is also 15 ns, so the bus controller must meet the write pulse width and data setup/hold windows within that window. The 64K x 16 organization matches a 16-bit data bus natively — no byte-lane steering needed for a 16-bit word, but 8-bit accesses require UB/LB control on the upper and lower byte enables. Asynchronous parallel SRAM means no clock, no refresh — the data is valid as long as power is applied and chip enable is asserted. The interface is simple glue logic (address, data, CE, OE, WE), but the 44-pin TSOP consumes more board area and routing layers than a serial SRAM or a synchronous SRAM with a reduced pin count. For new designs, consider a 3.3 V synchronous SRAM or a serial SRAM in a smaller package to save board space and power. The tape-and-reel format is the standard reel for this part; tray or tube quantities may also be available from surplus inventory.","metaTitle":"CY7C1021BN-15ZXCT 1Mbit Async SRAM, 15 ns, 44-TSOP II","metaDescription":"Infineon CY7C1021BN-15ZXCT 1Mbit (64K x 16) asynchronous parallel SRAM, 15 ns access time, 4.5-5.5V, 0-70°C, 44-TSOP II.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"title":"CY7C1021BN-15ZXCT","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)","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/b005a36e8e3c18743572ba4643b8046f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Who supplies CY7C1021BN-15ZXCT and how is it quoted for volume purchases?","answer":"The CY7C1021BN-15ZXCT is supplied through independent distribution and surplus channels. No stock-holding claim is made here; each lot is sourced per the buyer's quantity and delivery requirements."},{"question":"What is the closest pin-compatible alternative to CY7C1021BN-15ZXCT?","answer":"The base product number CY7C1021 includes other speed grades (e.g., -12, -20) and package variants (e.g., 44-SOJ), but these are not drop-in replacements without verifying the package footprint and timing. A board spin may be required for a different package or a 3.3 V synchronous SRAM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021BN-15ZXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021BN-15ZXCT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T01:54:39.756Z","lastPublished":"2026-07-21T01:54:39.756Z","indexable":true}}