{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5K31-IQC80-C0T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5K31-IQC80-C0T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5K31-IQC80-C0T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IQC80-C0T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5K31-IQC80-C0T, 32-bit Single-Core MCU, 80MHz, 128KB Flash, 24K x 8 RAM, CAN, USB, I²C, SPI, UART, 67 I/O, 100-LQFP, -40°C~85°C.","salesMarkdown":"## 80 MHz Cortex-M3 — processing headroom for control loops The 80 MHz core speed places this MCU in the mid-range of Cortex-M3 parts. The 24 KB SRAM is the tighter resource; if your application buffers large Ethernet or USB packets, budget carefully or move to a RAM-heavier sibling in the Stellaris family. Sourcing now runs through the independent market — broker, surplus, and new-old-stock inventory. Any stock you find will carry date codes from the original production run, so lot traceability and physical authentication become the priority. The laser-etched marking and package font should match TI's factory standard for the date code week; any re-marked or sanded units are a counterfeit red flag. ## Package and mounting — rework considerations No special stencil or reflow profile beyond the usual J-STD-020 MSL precautions. If you are pulling parts from surplus tape-and-reel, check the moisture-sensitive-bag seal date — an opened reel past the floor-life window needs a bake before reflow to avoid popcorning.","metaTitle":"LM3S5K31-IQC80-C0T Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"Texas Instruments LM3S5K31-IQC80-C0T 32-bit ARM Cortex-M3 MCU, 80 MHz, 128 KB Flash, 24 KB RAM, CAN/USB, -40°C to 85°C, 100-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"80MHz","Series":"Stellaris® ARM® Cortex®-M3S 5000","Package":"Tape & Reel (TR)","RAM Size":"24K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"67","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5K31","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.08V ~ 1.32V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ced2e58921dfaf5da21dc5dff9cf3a05.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IQC80-C0T/alternatives.json"},"ai":{"faq":[{"question":"What is the direct replacement for LM3S5K31-IQC80-C0T?","answer":"The Stellaris family has been superseded by TI's Tiva C and later ARM Cortex-M4F series, but pin-compatibility is not guaranteed. A design migration would require reviewing the target MCU's peripheral set, memory map, and package against the LM3S5K31's specific requirements — particularly the 80 MHz core, CAN+USB connectivity, and 100-LQFP footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5K31-IQC80-C0T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5K31-IQC80-C0T 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}}