{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY62128BLL-55ZRI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY62128BLL-55ZRI","canonicalUrl":"https://icboms.com/infineon/CY62128BLL-55ZRI","factsUrl":"https://icboms.com/api/mcp/products/CY62128BLL-55ZRI","rawCanonicalId":null},"summary":{"shortDescription":"Infineon MoBL® CY62128BLL-55ZRI, 1 Mbit asynchronous SRAM, 128K x 8 organization, 55 ns access time, 4.5 V to 5.5 V supply, -40°C to 85°C industrial temperature, 32-TFSOP surface-mount package.","salesMarkdown":"## 55 ns asynchronous SRAM for 5 V bus designs The Infineon CY62128BLL-55ZRI is a 1 Mbit asynchronous SRAM from the MoBL® series, organized as 128K x 8 bits. This part is housed in a 32-RTSOP surface-mount package and uses a parallel interface. ## 55 ns access time — bus timing margin The 55 ns access time sets the read-cycle window for the bus. For a typical 5 V MCU running at 12 MHz (83 ns cycle), this SRAM leaves about 28 ns of margin after address setup and hold — enough for a clean read without wait states. Faster peers in the same 1 Mbit class (CY7C109D-10ZXIT, CY7C1018DV33-10VXI) offer 10 ns access, but they run from a 3.0 V or 4.5 V rail and cost more per bit. If your bus runs above 16 MHz or you need back-to-back reads at full speed, the 10 ns parts are the right fit; for a 5 V legacy bus at moderate clock rates, the 55 ns part saves BOM cost and avoids a voltage-level translation. If your design has migrated to 3.3 V, the CY7C1018DV33-10VXI (1 Mbit, 10 ns, 3.0 V) is a pin-compatible alternative worth evaluating. ## Package and footprint The 32-RTSOP package (0.724\" body width, 18.40 mm) is a compact footprint for a 1 Mbit SRAM. The fine-pitch leads require careful solder-paste stencil design.","metaTitle":"CY62128BLL-55ZRI Infineon MoBL SRAM, 1 Mbit, 55 ns, 32-TFSOP","metaDescription":"Infineon CY62128BLL-55ZRI MoBL asynchronous SRAM, 1 Mbit (128K x 8), 55 ns access time, 4.5V–5.5V supply, -40°C to 85°C, 32-TFSOP.","metaKeywords":null},"attributes":{"series":"MoBL®","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"MoBL®","Package":"Bulk","Technology":"SRAM - Asynchronous","Access Time":"55 ns","Memory Size":"1Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"32-TFSOP (0.724\\\", 18.40mm Width)","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Memory Organization":"128K x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-RTSOP","Write Cycle Time - Word, Page":"55ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.2","stockQuantity":0,"priceTiers":[{"qty":94,"price":"$3.20000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/dc1c4143e0cfdafe42dc18fcc124b6de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between CY62128BLL-55ZRI and CY62128BLL-55ZI?","answer":"The suffix 'R' in 'ZRI' typically indicates a different packaging option — the 'ZRI' variant is supplied in Bulk (tray or tube) while the 'ZI' variant may be Tape & Reel. Both share the same 32-TFSOP package, 55 ns access time, and 4.5 V–5.5 V supply. Confirm the exact reel/tube quantity with your distributor before ordering."},{"question":"Does CY62128BLL-55ZRI require a 5V supply?","answer":"It is not designed for 3.3 V operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY62128BLL-55ZRI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY62128BLL-55ZRI 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}}