{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5K31-IBZ80-C1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5K31-IBZ80-C1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5K31-IBZ80-C1","factsUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IBZ80-C1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris LM3S5K31-IBZ80-C1, ARM Cortex-M3S 5000 series 32-bit MCU, 80 MHz, 128 KB Flash, 24 KB RAM, 67 I/O, USB/CAN/LIN/SPI/SSI, 16x10b ADC, 1.08V–1.32V core, -40°C to 85°C, 108-BGA.","salesMarkdown":"The Texas Instruments LM3S5K31-IBZ80-C1 is listed as obsolete. This Stellaris-series MCU runs an ARM Cortex-M3 core at 80 MHz, backed by 128 KB of Flash and 24 KB of SRAM. The 24 KB RAM handles typical data buffers and stack frames; if your application needs a large frame buffer or multiple DMA descriptors, budget the RAM allocation early. ## Peripheral set — USB, CAN, and industrial connectivity The LM3S5K31-IBZ80-C1 includes USB, CANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, and a 16-channel 10-bit ADC. ## 108-BGA package — layout considerations The 108-BGA (10x10 mm) package requires a multilayer PCB. Core supply is 1.08 V to 1.32 V.","metaTitle":"TI LM3S5K31-IBZ80-C1 ARM Cortex-M3 MCU, 80 MHz, 128 KB Flash","metaDescription":"Texas Instruments Stellaris LM3S5K31-IBZ80-C1: 32-bit ARM Cortex-M3 MCU at 80 MHz with 128 KB Flash, 24 KB RAM, USB/CAN/LIN, 67 I/O, 16-ch 10-bit ADC, -40°C to","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":"24K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"67","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":"LM3S5K31","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/ced2e58921dfaf5da21dc5dff9cf3a05.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IBZ80-C1/alternatives.json"},"ai":{"faq":[{"question":"What is the direct replacement for LM3S5K31-IBZ80-C1?","answer":"No official successor is listed on the record. For a pin-compatible alternative, evaluate other Stellaris LM3S5K31 variants (e.g., the -IBZ80-C1T, which differs only in packaging/tray quantity). For a current-production design, consider migrating to a newer TI Cortex-M4 or TM4C series device with similar peripheral sets."},{"question":"Does LM3S5K31-IBZ80-C1 support USB and CAN simultaneously?","answer":"Yes. The connectivity list includes both USB and CANbus, and the 67 GPIOs plus internal peripheral multiplexing allow concurrent operation of USB and CAN in the same application."},{"question":"What is the price for LM3S5K31-IBZ80-C1 in tray quantities?","answer":"Pricing is market-driven for this obsolete part and varies with available surplus stock. Submit an RFQ for a current quote in your target tray quantity."},{"question":"Can LM3S5K31-IBZ80-C1 be used as a replacement for LM3S5K31-IBZ80-C1T?","answer":"The -C1 and -C1T suffixes typically indicate different packaging or shipping options (tray vs. tape-and-reel). The die and firmware are identical, so the -C1 can replace the -C1T in a design that accepts tray-supplied parts, provided the board footprint and BGA ball-out match."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5K31-IBZ80-C1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5K31-IBZ80-C1 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}}