{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5G31-IBZ80-A1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5G31-IBZ80-A1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5G31-IBZ80-A1","factsUrl":"https://icboms.com/api/mcp/products/LM3S5G31-IBZ80-A1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series 32-bit MCU, LM3S5G31-IBZ80-A1, 80 MHz, 384 KB Flash, 64K x 8 RAM, 67 I/O, 108-BGA, -40 to 85°C.","salesMarkdown":"The 80 MHz Cortex-M3 core, combined with the DMA controller and a 12-bit ADC with 16 channels, handles real-time control loops and data acquisition without stalling the CPU on every conversion. If your firmware footprint or throughput needs exceed this, you are looking at a higher-density Stellaris or a Cortex-M4 part. ## Industrial temperature and connectivity","metaTitle":"LM3S5G31-IBZ80-A1 Stellaris ARM Cortex-M3 MCU, 80 MHz, 384 KB Flash","metaDescription":"Obsolete LM3S5G31-IBZ80-A1 32-bit ARM Cortex-M3 MCU from TI's Stellaris series. 80 MHz, 384 KB Flash, 64K x 8 RAM, 67 I/O, -40 to 85°C. Sourced to order against RFQ through indepen","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","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 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5G31","Program Memory Size":"384KB (384K 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/LM3S5G31-IBZ80-A1/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S5G31-IBZ80-A1 obsolete?","answer":"Yes, the LM3S5G31-IBZ80-A1 is obsolete. The manufacturer has discontinued this Stellaris MCU with no last-time-buy window remaining. Supply is limited to surplus available via RFQ confirmation through independent distributors."},{"question":"What is the replacement for LM3S5G31-IBZ80-A1?","answer":"There is no pin-compatible drop-in replacement from TI. The Stellaris series has been superseded by the Tiva C series, but those MCUs use different packages and peripheral sets. A board redesign targeting a Tiva TM4C or a comparable Cortex-M4 part is the recommended path."},{"question":"What are the key specifications of LM3S5G31-IBZ80-A1?","answer":"This is a 32-bit ARM Cortex-M3 MCU running at 80 MHz, with 384 KB Flash, 64K x 8 RAM, 67 I/O, a 16-channel 12-bit ADC, and interfaces including CAN, I²C, SPI, UART, and LIN. It operates from 3V to 3.6V and is rated for -40°C to 85°C. The package is a 108-BGA (10x10 mm)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5G31-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/LM3S5G31-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}}