{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5D91-IBZ80-A1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5D91-IBZ80-A1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5D91-IBZ80-A1","factsUrl":"https://icboms.com/api/mcp/products/LM3S5D91-IBZ80-A1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series MCU, LM3S5D91-IBZ80-A1, 32-bit single-core, 80MHz, 512KB Flash, 96KB SRAM, USB OTG/CAN/Ethernet, 72 I/O, 108-LFBGA (10x10), 3V to 3.6V, -40°C to 85°C, Tray.","salesMarkdown":"The Texas Instruments LM3S5D91-IBZ80-A1 is a 32-bit ARM Cortex-M3 MCU from the Stellaris 5000 series, clocked at 80 MHz with 512 KB of Flash and 96 KB of SRAM. It integrates USB OTG, CAN, and Ethernet connectivity alongside 72 general-purpose I/O lines, making it suited for industrial control nodes, motor drives, and building-automation gateways that need a single-chip networking stack. The 80 MHz Cortex-M3 core delivers enough throughput to run a real-time control loop (e.g., a field-oriented motor controller) alongside a lightweight TCP/IP stack and CANopen master. With 96 KB SRAM, the data buffer budget is adequate for a few hundred process variables but not for large frame buffers or extensive logging — plan your heap and stack allocation early. ## Connectivity and peripherals — what fits The 16-channel 12-bit ADC handles analog feedback for current sensing or temperature monitoring. The 108-LFBGA package demands careful PCB layout for solder-joint reliability under thermal cycling.","metaTitle":"Texas Instruments LM3S5D91-IBZ80-A1 ARM Cortex-M3 MCU, 80MHz","metaDescription":"TI Stellaris LM3S5D91-IBZ80-A1 ARM Cortex-M3 MCU, 80MHz, 512KB Flash, 96KB SRAM, USB OTG/CAN/Ethernet, 72 I/O, 108-BGA, -40°C to 85°C. 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 5000","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, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"72","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"A/D 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5D91","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"108-BGA (10x10)","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/LM3S5D91-IBZ80-A1/alternatives.json"},"ai":{"faq":[{"question":"What is LM3S5D91-IBZ80-A1's listed speed?","answer":"The core runs at 80 MHz, which is the maximum clock for this ARM Cortex-M3 device."},{"question":"Where can I buy LM3S5D91-IBZ80-A1?","answer":"This obsolete part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5D91-IBZ80-A1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5D91-IBZ80-A1 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}}