{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5K31-IQC80-C5T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5K31-IQC80-C5T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5K31-IQC80-C5T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IQC80-C5T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5K31-IQC80-C5T, 32-bit MCU, 80MHz, 128KB Flash, 24KB RAM, CAN/USB/I2C/SPI/UART, 100-LQFP, -40°C to 85°C.","salesMarkdown":"The LM3S5K31-IQC80-C5T is a Texas Instruments Stellaris ARM Cortex-M3 MCU running at 80 MHz with 128 KB of Flash program memory and 24 KB of RAM. ## Obsolete — sourcing through surplus channels This part is marked obsolete by the manufacturer. If you are freezing a BOM for a new design, look for a current-production Cortex-M3 or Cortex-M4 from TI's Tiva or Stellaris successor families; for a legacy repair or a production run that cannot requalify, we can quote the LM3S5K31-IQC80-C5T against your volume and delivery window. ## Connectivity and peripheral set The MCU integrates CAN, USB, UART, SPI, I2C, IrDA, LIN, and Microwire interfaces. The 16-channel 10-bit ADC samples for motor current sensing or analog input scanning. ## Supply voltage and power considerations Core and I/O run from a single 1.08 V to 1.32 V supply.","metaTitle":"LM3S5K31-IQC80-C5T Stellaris ARM Cortex-M3 MCU, 80MHz, 128KB Flash","metaDescription":"LM3S5K31-IQC80-C5T is an obsolete Stellaris ARM Cortex-M3 MCU with 80MHz core, 128KB Flash, 24KB RAM, CAN/USB, industrial temp -40°C to 85°C. Sourced to order against RFQ.","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-C5T/alternatives.json"},"ai":{"faq":[{"question":"What is LM3S5K31-IQC80-C5T's listed speed?","answer":"The core runs at 80 MHz, which is the maximum clock frequency for this Cortex-M3 device. That speed supports moderate control loops and protocol stacks without external PLL configuration."},{"question":"What is the operating temperature range for LM3S5K31-IQC80-C5T?","answer":"It is rated for -40°C to 85°C ambient, which covers industrial and outdoor telecom enclosures. Not qualified for automotive under-hood or extended-temperature downhole applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5K31-IQC80-C5T","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-C5T 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}}