{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S25FL256LAGMFB000","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"S25FL256LAGMFB000","canonicalUrl":"https://icboms.com/infineon/S25FL256LAGMFB000","factsUrl":"https://icboms.com/api/mcp/products/S25FL256LAGMFB000","rawCanonicalId":null},"summary":{"shortDescription":"Infineon S25FL256LAGMFB000, Automotive AEC-Q100 FL-L series, 256 Mbit NOR Flash, 133 MHz SPI Quad I/O / QPI, 2.7-3.6 V, 32M x 8, -40 to 105 °C, 16-SOIC (7.50 mm), tray.","salesMarkdown":"## 256 Mbit NOR flash for automotive code storage The S25FL256LAGMFB000 is a 256 Mbit NOR flash from Infineon's FL-L series, organized as 32M × 8 bits and accessed over an SPI Quad I/O or QPI interface at up to 133 MHz. This density suits code-shadowing for a single-core MCU boot image or a moderate-size data-logging buffer in an automotive ECU. AEC-Q100 Grade 1 qualification means the device is characterized and guaranteed over the -40 to +105 °C ambient temperature range — the full under-hood and cabin thermal envelope for passenger vehicles and light trucks. The 2.7-3.6 V supply rail matches the common 3.3 V automotive power domain without an external regulator. ## What the 133 MHz Quad I/O bus means for throughput The SPI Quad I/O interface at 133 MHz delivers a theoretical peak read throughput of 532 Mbit/s (four data lines × 133 MHz). In practice, the sustained rate depends on the command overhead and the initial access latency, but this clock speed puts the device in the high-performance tier for NOR flash — fast enough to support execute-in-place (XIP) for a real-time boot sequence without copying the image to RAM first. The QPI (Quad Peripheral Interface) mode reduces the command byte to a single serial cycle, cutting protocol overhead on short random reads. For a firmware-over-the-air (FOTA) update routine that reads many small sectors, QPI can improve effective throughput by 15-25 % compared to standard Quad I/O command sequences. This NOR flash is suitable for both new design-ins and production replenishment without a looming obsolescence risk.","metaTitle":"Infineon S25FL256LAGMFB000 NOR Flash, 256 Mbit, 133 MHz","metaDescription":"Infineon S25FL256LAGMFB000 256 Mbit NOR Flash, 133 MHz SPI Quad I/O, 2.7-3.6 V, AEC-Q100 automotive qualified, -40 to 105 °C, 16-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"title":"S25FL256LAGMFB000","Series":"Automotive, AEC-Q100, FL-L","Package":"Tray","Technology":"FLASH - NOR","Memory Size":"256Mbit","Memory Type":"Non-Volatile","Memory Format":"FLASH","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","Clock Frequency":"133 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI - Quad I/O, QPI","Voltage - Supply":"2.7V ~ 3.6V","Base Product Number":"S25FL256","Memory Organization":"32M x 8","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"16-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.5288","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Does the 133 MHz clock rating support a 120 MHz ECU host with Quad I/O?","answer":"133 MHz maximum clock gives 13 MHz of headroom over a 120 MHz host — 10.8% margin, which is adequate for Quad I/O read cycles. Whether the host flash controller's hold-time and setup-time budget at 120 MHz requires firmware adjustment is a characterization item specific to your MCU, not a spec gap in the device itself."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/S25FL256LAGMFB000","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/S25FL256LAGMFB000 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}