{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1328G-133AXIT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1328G-133AXIT","canonicalUrl":"https://icboms.com/infineon/CY7C1328G-133AXIT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1328G-133AXIT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C1328G-133AXIT synchronous SRAM, 4.5Mbit (256K x 18), 133 MHz clock, 4 ns access, 3.15V-3.6V, -40°C to 85°C, 100-TQFP, Tape & Reel.","salesMarkdown":"The CY7C1328G-133AXIT: Sourcing now runs through independent distribution — each reel is lot-verified and the date-code laser etch is cross-checked against Infineon's own marking standards to screen out re-marked or relabeled stock. ## 133 MHz synchronous SRAM — timing and organization The CY7C1328G-133AXIT is a 4.5 Mbit synchronous SRAM organized as 256K x 18 bits. The 18-bit word width is useful for systems that need a parity or ECC check bit alongside each 16-bit data word — a common pattern in networking and telecom line cards where single-bit error detection is non-negotiable. It runs at a 133 MHz clock with a 4 ns access time, meaning the first word appears on the bus within 4 clock cycles after the address is latched — the pipelined SDR architecture keeps the data flowing at the clock rate once the pipeline is full. ## Industrial temperature and surface-mount footprint The 100-TQFP package (14x20 mm body,) is a standard fine-pitch QFP with 0.5 mm lead pitch, reflow-compatible with lead-free profiles. The memory interface is parallel — all address and data lines route to the controller in parallel, which means the PCB layout must keep trace lengths matched within a few hundred mils to avoid skew on the synchronous bus. The 100-LQFP footprint is well-documented in Infineon's application notes; the thermal pad on the underside of the TQFP variant should be soldered to a copper plane for heat sinking.","metaTitle":"Infineon CY7C1328G-133AXIT 4.5Mbit SRAM, 133 MHz, 100-TQFP","metaDescription":"Obsolete Infineon CY7C1328G-133AXIT synchronous SRAM, 256Kx18, 133 MHz, 4 ns access, -40 to 85°C, 100-TQFP. Sourced to order via independent channels.","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 - Synchronous, SDR","Access Time":"4 ns","Memory Size":"4.5Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"100-LQFP","Product Status":"Obsolete","Clock Frequency":"133 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"3.15V ~ 3.6V","Base Product Number":"CY7C1328","Memory Organization":"256K x 18","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"100-TQFP (14x20)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fae0211181bbfce32e8425332fa6280d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the memory organization and interface of the CY7C1328G-133AXIT?","answer":"It is organized as 256K x 18 bits with a parallel memory interface. The 18-bit word width supports parity or ECC alongside 16-bit data."},{"question":"What package does the CY7C1328G-133AXIT come in?","answer":"The reel format is Tape & Reel (TR)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1328G-133AXIT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1328G-133AXIT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T01:59:29.962Z","lastPublished":"2026-07-21T01:59:29.962Z","indexable":true}}