{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C199C-12VXI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C199C-12VXI","canonicalUrl":"https://icboms.com/infineon/CY7C199C-12VXI","factsUrl":"https://icboms.com/api/mcp/products/CY7C199C-12VXI","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C199C-12VXI, 256Kbit (32K x 8) asynchronous SRAM, 12 ns access time, 4.5V–5.5V supply, -40°C to 85°C, 28-SOJ surface-mount package, Tube.","salesMarkdown":"## 12 ns access time — keeping the bus fed The CY7C199C-12VXI is a 256Kbit asynchronous SRAM organized as 32K x 8, built by Infineon (formerly Cypress). Its 12 ns access time means the CPU can read or write a byte every 12 ns without inserting wait states — critical for high-throughput cache or buffer memory in 5V DSP and microcontroller systems. The parallel interface is straightforward: address in, data out, chip-select and write-enable strobes. ## 5V supply — legacy bus compatibility Supply range is 4.5V to 5.5V, confirming this is a 5V part. That matters when the rest of the board runs on a 5V rail — no level translation needed on the address and data lines. If your design has moved to 3.3V or lower, this part won't work without a separate 5V supply and bus translators. The 28-SOJ package (300-mil body, 7.62 mm width) is a surface-mount footprint common on legacy industrial boards. Infineon lists the CY7C199C-12VXI as Obsolete. No last-time-buy window remains; new production has ended. No official pin-compatible successor is recorded, so any replacement requires a footprint or timing review.","metaTitle":"CY7C199C-12VXI Infineon 256Kbit SRAM, 12 ns, 5V, SOJ-28","metaDescription":"Infineon CY7C199C-12VXI 256Kbit asynchronous SRAM, 12 ns access time, 4.5V–5.5V supply, -40°C to 85°C, SOJ-28.","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":"Tube","Technology":"SRAM - Asynchronous","Access Time":"12 ns","Memory Size":"256Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"28-BSOJ (0.300\\\", 7.62mm Width)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C199","Memory Organization":"32K x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"28-SOJ","Write Cycle Time - Word, Page":"12ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/aea969ef93c389c22f1244d5fae0f19f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What voltage does CY7C199C-12VXI require?","answer":"Not compatible with 3.3V-only buses without level translation."},{"question":"What is a drop-in replacement for CY7C199C-12VXI?","answer":"No official pin-compatible successor is recorded in the lifecycle data. Any replacement will need a footprint and timing review against the 28-SOJ package and 12 ns access time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C199C-12VXI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C199C-12VXI 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}}