{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5K31-IQC80-C3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5K31-IQC80-C3","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5K31-IQC80-C3","factsUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IQC80-C3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series MCU, LM3S5K31-IQC80-C3, 32-bit single-core at 80MHz, 128KB Flash, 24K x 8 RAM, 67 I/O, 100-LQFP, -40°C~85°C.","salesMarkdown":"At 80 MHz the core can handle a PID loop update at several kilohertz while still servicing a CAN message queue and a USB bulk transfer. This part is listed as obsolete. ## Pinout question — not in the evidence The pin assignment for the 100-LQFP package is not carried in the sourcing record. Verify the pinout against the official TI datasheet before committing a board layout — the 100-pin LQFP footprint is standard, but signal-to-pin mapping varies across the Stellaris family.","metaTitle":"LM3S5K31-IQC80-C3 Stellaris ARM Cortex-M3 MCU, 80MHz","metaDescription":"LM3S5K31-IQC80-C3 Stellaris ARM Cortex-M3 MCU, 80MHz core, 128KB Flash, 24K 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":"80MHz","Series":"Stellaris® ARM® Cortex®-M3S 5000","Package":"Tray","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-C3/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S5K31-IQC80-C3 obsolete?","answer":"Yes, the LM3S5K31-IQC80-C3 is listed as obsolete. TI no longer manufactures it, and standard distribution does not carry it."},{"question":"What is the replacement for LM3S5K31-IQC80-C3?","answer":"The evidence does not list an official TI-specified replacement for this exact order code. A pin-compatible Stellaris family member with similar memory and peripheral set may exist, but any substitution requires a design review and validation. We can help source the original part through surplus channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5K31-IQC80-C3","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-C3 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}}