{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5791-IBZ80-C5","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5791-IBZ80-C5","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5791-IBZ80-C5","factsUrl":"https://icboms.com/api/mcp/products/LM3S5791-IBZ80-C5","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series, LM3S5791-IBZ80-C5, 32-bit single-core MCU, 80 MHz, 128 KB FLASH, 64 KB SRAM, 72 I/O, CAN/USB OTG/EBI/SPI/UART, 108-BGA (10x10 mm), 1.08–1.32 V, -40 to 85°C.","salesMarkdown":"Any future procurement runs through independent distribution — verified stock, date-code rotation, and traceability handled per order. ## 108-ball BGA — layout and rework notes Housed in a 108-ball LFBGA with a 10x10 mm body and 0.8 mm pitch. No exposed thermal pad — all heat dissipates through the BGA balls into the inner-layer copper pours. Supply range is 1.08 V to 1.32 V core, so a dedicated 1.2 V rail is needed — not a 3.3 V single-supply part. The 1.2 V rail must be clean and local to the BGA; a small LDO from the 3.3 V system rail works if the 80 MHz core current (around 50–80 mA typical) is within the LDO's rating. On-chip data converters: 16-channel 10-bit ADC, enough for analog sensor acquisition in a motor-drive or power-monitoring role. Peripherals include PWM, QEI (for quadrature encoder inputs), I²S audio, and a watchdog timer.","metaTitle":"LM3S5791-IBZ80-C5 Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"Texas Instruments LM3S5791-IBZ80-C5 32-bit Cortex-M3 MCU, 80 MHz, 128 KB Flash, 64 KB SRAM, 72 I/O, CAN/USB OTG/EBI. Industrial temp -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":"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-C5/alternatives.json"},"ai":{"faq":[{"question":"What is the direct replacement for LM3S5791-IBZ80-C5?","answer":"Texas Instruments has not published an official direct replacement for this part. Within the same Stellaris family, the LM3S5791-IBZ80-C4 shares the same 80 MHz core and 108-BGA package but may differ in Flash or SRAM density — verify the memory sizing against your firmware image before cross-referencing. For new designs, consider migrating to a current-production TI Cortex-M4 or TM4C series part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5791-IBZ80-C5","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-C5 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}}