{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021B-12VXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021B-12VXCT","canonicalUrl":"https://icboms.com/infineon/CY7C1021B-12VXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021B-12VXCT","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1021B-12VXCT, asynchronous SRAM, 1Mbit (64K x 16), 12 ns access time, 4.5 V ~ 5.5 V supply, parallel interface, 44-SOJ package, 0 °C to 70 °C commercial temperature.","salesMarkdown":"The CY7C1021B-12VXCT is a 1 Mbit asynchronous SRAM organized as 64K words by 16 bits. It operates from a 4.5 V to 5.5 V supply and delivers a 12 ns access time. ## 12 ns access time — timing margin for the bus The 12 ns access time is the part's headline speed rating. ## 64K x 16 organization — why the x16 width matters The 64K x 16 organization connects directly to a 16-bit data bus without byte-lane multiplexing. The 44-SOJ package keeps the pin count manageable for a x16 memory. ## Obsolete — sourcing reality for the BOM line No factory orders are accepted. The part is available only through surplus and independent distribution channels. No official successor has been named by Cypress; any replacement must be evaluated on pin-compatibility and timing. This covers indoor equipment, office electronics, and telecom racks in climate-controlled spaces.","metaTitle":"Cypress CY7C1021B-12VXCT SRAM, 1Mbit, 12 ns, 44-SOJ","metaDescription":"Cypress CY7C1021B-12VXCT 1Mbit (64K x 16) asynchronous SRAM, 12 ns access time, 4.5-5.5V supply, 44-SOJ. Obsolete — sourced to order against RFQ.","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":"12 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":"12ns"}},"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-12VXCT obsolete?","answer":"Yes, the CY7C1021B-12VXCT is officially Obsolete per Cypress's lifecycle status. It is no longer in production and must be sourced from surplus or independent distribution."},{"question":"What is the replacement for CY7C1021B-12VXCT?","answer":"Cypress has not published an official direct replacement for the CY7C1021B-12VXCT. Any alternative must be evaluated on pin-compatibility, supply voltage (5 V), and 12 ns access time. Parts in the CY7C1021 family with a different suffix may have the same die but differ in package or temperature grade."},{"question":"What is the pinout and package of CY7C1021B?","answer":"The CY7C1021B-12VXCT comes in a 44-SOJ package (44-BSOJ, 0.400\" body width, 10.16 mm width). It is a surface-mount, J-bend package. The pinout is standard for a 64K x 16 asynchronous SRAM with separate address, data, chip enable, output enable, and write enable signals."},{"question":"What is the datasheet for CY7C1021B-12VXCT?","answer":"The datasheet for the CY7C1021B-12VXCT covers the full CY7C1021B family. It includes the 12 ns access time, 4.5 V to 5.5 V supply range, 64K x 16 organization, and 44-SOJ package mechanical drawings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021B-12VXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021B-12VXCT 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}}