{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S308-IQN25","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S308-IQN25","canonicalUrl":"https://icboms.com/texas-instruments/LM3S308-IQN25","factsUrl":"https://icboms.com/api/mcp/products/LM3S308-IQN25","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 300 series LM3S308-IQN25, 32-bit MCU, 25 MHz, 16 KB Flash, 4K x 8 RAM, 28 I/O, I²C/SPI/UART, A/D 8x10b, -40°C to 85°C, 48-LQFP.","salesMarkdown":"The LM3S308-IQN25: Sourcing now runs through independent distribution and surplus inventory, which is the channel this listing serves. It was designed for cost-sensitive control applications where the Cortex-M3 architecture gave a step up in code density and interrupt latency over 8- or 16-bit parts of the era. The 25 MHz ARM Cortex-M3 core delivers enough throughput for UART/SPI/I²C protocol handling, PWM generation, and 10-bit ADC sampling across eight channels. The 4K x 8 SRAM is tight — enough for a modest RTOS tick and a few buffers, but not for frame buffers or large data logs. The 16 KB Flash limits firmware to compact control loops; anything needing a TCP/IP stack or USB stack will overflow. ## Sourcing a discontinued MCU — what to expect Because the LM3S308-IQN25 is obsolete, availability is limited to what exists in surplus and broker inventories. This listing sources the part through independent distribution channels — each order is quoted against confirmed inventory at the time of the RFQ. There is no factory lead time to reference; the supply is what the market holds. For a production BOM that cannot requalify a new MCU, the procurement strategy is to secure a lifetime buy quantity from available surplus lots.","metaTitle":"LM3S308-IQN25 Stellaris ARM Cortex-M3 MCU, 25 MHz","metaDescription":"LM3S308-IQN25 is an obsolete Stellaris ARM Cortex-M3 MCU with 25 MHz core, 16 KB Flash, 4K x 8 RAM, industrial temp -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"25MHz","Series":"Stellaris® ARM® Cortex®-M3S 300","Package":"Tray","RAM Size":"4K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"28","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Product Status":"Obsolete","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S308","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/90a978bd331b0d8880daa32faecfc169.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S308-IQN25 obsolete?","answer":"Yes, the LM3S308-IQN25 is officially obsolete. Texas Instruments no longer manufactures this part, and the last-time-buy window has closed. All sourcing is through surplus and independent distribution channels."},{"question":"What is the exact replacement or equivalent for LM3S308-IQN25?","answer":"TI has not published a direct pin-compatible replacement for the LM3S308-IQN25. The Stellaris family includes other Cortex-M3 devices in the 48-LQFP package, but their memory and peripheral configurations differ. A full BOM-level requalification is needed to substitute any alternative."},{"question":"Where can I buy LM3S308-IQN25 from a reliable distributor?","answer":"This listing sources the LM3S308-IQN25 through independent distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S308-IQN25","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S308-IQN25 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}}