{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5D51-IQC80-A1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5D51-IQC80-A1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5D51-IQC80-A1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5D51-IQC80-A1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5D51-IQC80-A1T, 32-bit MCU, 80 MHz, 512 KB Flash, 96 KB RAM, USB OTG, CAN, 67 I/O, 100-LQFP, -40 to 85 °C.","salesMarkdown":"The LM3S5D51-IQC80-A1T is a 32-bit ARM Cortex-M3 microcontroller running at 80 MHz, with 512 KB Flash and 96 KB RAM. ## Connectivity and I/O — USB OTG, CAN, and serial options USB OTG support means the chip can act as either a USB host or device — useful for direct connection to thumb drives, keyboards, or sensors without a separate host controller. The 67 general-purpose I/O pins in a 100-LQFP package give enough flexibility for parallel buses, keypads, and display interfaces without resorting to a larger footprint. ## Lifecycle reality — EOL status and sourcing The LM3S5D51-IQC80-A1T is end-of-life (EOL hot). TI has discontinued the part; no new factory orders are accepted. Sourcing is through the independent market; we quote to order against an RFQ. ## Key ratings at a glance Core: ARM Cortex-M3, 32-bit, single-core at 80 MHz. Temperature: -40°C to 85°C. Package: 100-LQFP (14x14 mm), surface mount. Peripherals include brown-out detect, DMA, I2S, POR, PWM, WDT, and a 16-channel 12-bit ADC. Internal oscillator — no external crystal required for basic operation.","metaTitle":"LM3S5D51-IQC80-A1T Stellaris ARM Cortex-M3 MCU, 80 MHz, 512 KB Flash","metaDescription":"LM3S5D51-IQC80-A1T is a 32-bit ARM Cortex-M3 MCU from TI's Stellaris 5000 series. 80 MHz, 512 KB Flash, 96 KB RAM, USB OTG, CAN, industrial temp. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"80MHz","Series":"Stellaris® ARM® Cortex®-M3S 5000","RAM Size":"96K x 8","Core Size":"32-Bit Single-Core","Packaging":"Tape & Reel (TR)","EEPROM Size":"-","Part Status":"Obsolete","Peripherals":"Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT","Connectivity":"CANbus, I2C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"67","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Data Converters":"A/D 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5D51","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":"https://cdn.icboms.com/b4556d9271d6de305f767bc6b01861cb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5D51-IQC80-A1T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S5D51-IQC80-A1T obsolete?","answer":"Yes, this part is end-of-life (EOL hot). TI has discontinued it, and new factory orders are no longer accepted. Sourcing is through the independent market; we can quote it to order against an RFQ."},{"question":"What is the replacement for LM3S5D51-IQC80-A1T?","answer":"There is no official TI successor listed for this exact order code. A pin-compatible drop-in from the same Stellaris family is not confirmed; a design review is needed to identify a suitable alternative. Contact us with your requirements for cross-reference support."},{"question":"Does LM3S5D51-IQC80-A1T support USB OTG?","answer":"Yes, the connectivity set includes USB OTG, allowing the MCU to act as either a USB host or device."},{"question":"What is LM3S5D51-IQC80-A1T's listed speed?","answer":"The core runs at 80 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5D51-IQC80-A1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5D51-IQC80-A1T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}