{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5B91-IBZ80-C1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5B91-IBZ80-C1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5B91-IBZ80-C1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5B91-IBZ80-C1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5B91-IBZ80-C1T, 32-Bit Single-Core MCU, 80MHz, 256KB Flash, 96K x 8 RAM, 72 I/O, CANbus, USB OTG, 108-LFBGA, -40°C~85°C.","salesMarkdown":"The Texas Instruments LM3S5B91-IBZ80-C1T is a Stellaris ARM Cortex-M3S 5000 series 32-bit microcontroller running at 80 MHz. The 96 KB RAM handles multiple frame buffers and a real-time OS heap. The 16-channel 10-bit ADC covers analog sensing for current monitoring or potentiometer feedback. ## 108-ball BGA — reflow only, no hand-soldering This is not a hand-solderable part — it needs a solder-paste stencil and reflow oven. The 1.08 V to 1.32 V core supply requires a dedicated low-voltage rail, separate from the I/O bank. The brown-out detect and POR help the core ride through supply dips without corrupting Flash. Texas Instruments no longer manufactures the LM3S5B91-IBZ80-C1T.","metaTitle":"LM3S5B91-IBZ80-C1T Stellaris ARM Cortex-M3 MCU, 80MHz","metaDescription":"Texas Instruments LM3S5B91-IBZ80-C1T Stellaris ARM Cortex-M3 MCU, 80MHz, 256KB Flash, 96KB RAM, 72 I/O, CAN/USB OTG, -40 to 85°C.","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":"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 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5B91","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)":"1.08V ~ 1.32V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3e88c5185290e27121af79c38923d69f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5B91-IBZ80-C1T/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S5B91-IBZ80-C1T?","answer":"No official replacement has been recorded for the LM3S5B91-IBZ80-C1T. The Stellaris family was transitioned to the Tiva C series by Texas Instruments, but pin-compatibility is not confirmed. For existing designs, the only sourcing option is the independent surplus market."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5B91-IBZ80-C1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5B91-IBZ80-C1T 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}}