{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S9B81-IBZ80-C3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S9B81-IBZ80-C3","canonicalUrl":"https://icboms.com/texas-instruments/LM3S9B81-IBZ80-C3","factsUrl":"https://icboms.com/api/mcp/products/LM3S9B81-IBZ80-C3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 9000 series 32-bit MCU, LM3S9B81-IBZ80-C3, 80 MHz core, 256 KB Flash, 96 KB RAM, 65 I/O, Ethernet/CAN/USB OTG, 108-BGA.","salesMarkdown":"## 80 MHz Cortex-M3 — what the speed buys you 80 MHz on a Cortex-M3 core handles a real-time control loop plus a TCP/IP stack and CANopen without saturating the core. The 96 KB RAM gives enough headroom for two Ethernet frame buffers and a modest RTOS heap.","metaTitle":"LM3S9B81-IBZ80-C3 Stellaris Cortex-M3 MCU, 80 MHz, 256 KB Flash","metaDescription":"LM3S9B81-IBZ80-C3 Stellaris ARM Cortex-M3 MCU, 80 MHz, 256 KB Flash, 96 KB RAM, Ethernet/CAN/USB. Obsolete — 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 9000","Package":"Tray","RAM Size":"96K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, Ethernet, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"65","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"A/D 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S9B81","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"108-BGA (10x10)","Voltage - Supply (Vcc/Vdd)":"1.235V ~ 1.365V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/44db7f5ad4ad2e4c19bcb9cdbd64a6f0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S9B81-IBZ80-C3/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S9B81-IBZ80-C3?","answer":"Within the Stellaris 9000 series, a sibling with the same 108-BGA footprint and similar peripheral set (e.g., LM3S9B92) may be pin-compatible, but TI has not published a direct cross-reference. The Tiva TM4C series is not pin-compatible. Verify against your PCB layout before committing."},{"question":"What is LM3S9B81-IBZ80-C3's listed speed?","answer":"The core runs at 80 MHz."},{"question":"What series is LM3S9B81-IBZ80-C3 from?","answer":"It belongs to the Stellaris ARM Cortex-M3S 9000 series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S9B81-IBZ80-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/LM3S9B81-IBZ80-C3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}