{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C199-12VC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C199-12VC","canonicalUrl":"https://icboms.com/infineon/CY7C199-12VC","factsUrl":"https://icboms.com/api/mcp/products/CY7C199-12VC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C199-12VC asynchronous SRAM, 256Kbit (32K x 8), 12 ns access time, 4.5V-5.5V supply, 0°C-70°C, 28-SOJ package, Tube.","salesMarkdown":"## 256Kbit asynchronous SRAM, 12 ns access — what the timing means for the bus The CY7C199-12VC is a 256Kbit asynchronous SRAM organized as 32K x 8 bits, with a 12 ns access time across the full 4.5V–5.5V supply range. That 12 ns window sets the maximum read-cycle rate the host controller must respect — a 66 MHz bus with a 15 ns cycle budget has margin; an 80 MHz bus does not. The part uses a parallel interface with no clock — address changes propagate through the sense amps, and the data appears on the I/O pins within 12 ns of the address valid edge. Write cycle time is also 12 ns for word and page modes, so the read and write timing are symmetric. ## Obsolete — sourcing through surplus channels For a BOM that already uses this exact footprint (28-SOJ, 0.300-inch body width, 7.62 mm) and the 5V-only supply rail, the only drop-in path is the same order code or a verified second-source equivalent from the same base product family. ## 5V-only supply — not 3.3V tolerant It is not a 3.3V device — applying 3.3V to Vcc will not guarantee correct read or write operation. The commercial temperature grade (0°C to 70°C) limits deployment to indoor, temperature-controlled environments. No industrial or automotive temperature range is specified.","metaTitle":"CY7C199-12VC Infineon 256Kbit SRAM, 12ns, 28-SOJ, Obsolete","metaDescription":"Infineon CY7C199-12VC 256Kbit asynchronous SRAM, 32K x 8, 12ns access, 4.5V-5.5V, 0°C-70°C, 28-SOJ. Discontinued — 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":"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":"0°C~70°C(TA)","Supplier Device Package":"28-SOJ","Write Cycle Time - Word, Page":"12ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/db4c3dbfc281eb6c685e985fa829ece5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What replaces the CY7C199-12VC?","answer":"Infineon has not published an official successor for the CY7C199-12VC. Sourcing is through surplus and broker inventory — confirm the BOM position count and the 28-SOJ footprint before committing."},{"question":"Is the CY7C199-12VC a 5V or 3.3V SRAM?","answer":"It is a 5V-only device, with a supply range of 4.5V to 5.5V. It is not rated for 3.3V operation."},{"question":"Can I use the CY7C199-12VC as a replacement for the CY7C199-15VC?","answer":"Yes — the CY7C199-12VC has a faster 12 ns access time compared to the 15 ns of the CY7C199-15VC, so it is a drop-in speed upgrade. The package, pinout, supply voltage, and memory organization are identical across the speed grades in the CY7C199 family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C199-12VC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C199-12VC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T10:55:38.777Z","lastPublished":"2026-07-20T10:55:38.777Z","indexable":true}}