{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5C31-IQC80-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5C31-IQC80-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5C31-IQC80-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S5C31-IQC80-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5C31-IQC80-A2, 32-Bit Single-Core MCU, 80MHz, 512KB FLASH, 64K x 8 RAM, CANbus, USB, 67 I/O, 100-LQFP, -40°C~85°C.","salesMarkdown":"## Obsolete — plan your BOM line accordingly The LM3S5C31-IQC80-A2 is officially marked as obsolete. ## 80 MHz Cortex-M3 — what the speed rating means for the bus The 80 MHz core clock on this ARM Cortex-M3 is the headline performance spec. At that speed, the 512 KB Flash needs at least one wait state inserted for zero-wait access — the flash controller handles this automatically. The 64K x 8 RAM is sized for moderate data buffers and stacks; if your application uses USB or CAN with large packet queues, budget the RAM footprint early. Supply range is 3.0 V to 3.6 V — a single 3.3 V rail works, but watch the dropout on the regulator if you are running near the lower limit.","metaTitle":"LM3S5C31-IQC80-A2 Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"LM3S5C31-IQC80-A2 is an obsolete Stellaris ARM Cortex-M3 MCU with 80 MHz core, 512 KB Flash, 64K x 8 RAM, CAN/USB, 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":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, 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 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5C31","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5C31-IQC80-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S5C31-IQC80-A2?","answer":"No direct pin-compatible replacement is listed on the official record. The Stellaris family has been superseded by newer ARM Cortex-M portfolios from Texas Instruments, but migrating to a different MCU will require a board layout change and firmware port. For existing BOM lines, the independent channel is the practical source."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5C31-IQC80-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5C31-IQC80-A2 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}}