{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5791-IBZ80-C3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5791-IBZ80-C3","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5791-IBZ80-C3","factsUrl":"https://icboms.com/api/mcp/products/LM3S5791-IBZ80-C3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series MCU, LM3S5791-IBZ80-C3, 32-Bit Single-Core, 80MHz, 128KB Flash, 64K x 8 RAM, 108-LFBGA.","salesMarkdown":"The LM3S5791-IBZ80-C3: The inclusion of I²S and QEI means this part was aimed at motor-control or audio-streaming endpoints where a dedicated serial audio interface and quadrature encoder input save external logic. On-chip analog is a 16-channel 10-bit A/D converter, adequate for reading potentiometers, current-sense resistors, or temperature sensors in a control loop. The internal oscillator eliminates an external crystal for non-critical timing, though the USB OTG peripheral will require a precision clock source for full-speed operation. ## 108-ball BGA — board integration notes The 108-LFBGA package measures 10x10 mm with a 0.80 mm ball pitch. This is a fine-pitch BGA that demands a four-layer PCB minimum for fan-out — the inner rows route through vias-in-pad or dog-bone traces. The supplier device package (108-BGA) is the same footprint; confirm the solder-ball alloy and reflow profile against the moisture sensitivity level on the reel label before stenciling. ## Obsolete — sourcing reality and lifecycle Texas Instruments has marked the LM3S5791-IBZ80-C3 as obsolete. For a BOM that already carries this MCU, the remaining stock in the channel is the only drop-in path without a board spin.","metaTitle":"LM3S5791-IBZ80-C3 ARM Cortex-M3 MCU, 80MHz, 128KB Flash","metaDescription":"Texas Instruments LM3S5791-IBZ80-C3 Stellaris ARM Cortex-M3 MCU, 80MHz, 128KB Flash, 64KB RAM, 108-BGA. Obsolete — sourced to order.","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, 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":"LM3S5791","Program Memory Size":"128KB (128K 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/603e2ee396c884705197257f18e9e4d3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5791-IBZ80-C3/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5791-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/LM3S5791-IBZ80-C3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:54:31.046Z","lastPublished":"2026-07-21T02:54:31.046Z","indexable":true}}