{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1538-IBZ50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1538-IBZ50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1538-IBZ50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1538-IBZ50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris LM3S1538-IBZ50-A2T, ARM Cortex-M3 32-bit MCU, 50 MHz, 96 KB Flash, 64 KB RAM, 43 I/O, I²C/SPI/UART/USART, 8x10-bit ADC, -40 to 85°C, 108-BGA.","salesMarkdown":"That means TI has flagged it for eventual end-of-life, though it has not yet been formally discontinued. For existing production, you can still source it through independent channels, but any new BOM should plan for a migration. If you are supporting a legacy board, the NRND flag means you should secure your remaining volume requirements sooner rather than later — the last-time-buy window may already be closing. The 50 MHz ARM Cortex-M3 core delivers a balanced compute-to-power ratio for control applications. It is not a high-throughput DSP engine, but it handles real-time control loops, sensor fusion, and communication protocol stacks without breaking a sweat. The 64 KB SRAM leaves room for moderate data buffering — enough for a UART-to-Ethernet bridge or a motor-control state machine, but not for video or large audio buffers. ## Industrial temperature and supply voltage Rated from -40°C to 85°C, this MCU operates on a supply voltage of 2.25 V to 2.75 V. ## Sourcing posture Because the LM3S1538-IBZ50-A2T is NRND, it is not flowing through standard authorized-distributor channels in volume. We source it through our independent supply network — verified date-code lots, inspected for authenticity. For BOM planning, treat this as a last-time-buy candidate and lock in your lifetime buy quantity early.","metaTitle":"LM3S1538-IBZ50-A2T Texas Instruments Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"TI LM3S1538-IBZ50-A2T 32-bit ARM Cortex-M3 MCU, 50MHz, 96KB Flash, 64KB RAM, industrial temp. NRND — sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 1000","Package":"Tape & Reel (TR)","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"43","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Not For New Designs","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1538","Program Memory Size":"96KB (96K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"108-BGA (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.5141","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1538-IBZ50-A2T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S1538-IBZ50-A2T obsolete or not recommended for new designs?","answer":"Yes, the LM3S1538-IBZ50-A2T is NRND — Not Recommended for New Designs. It has not been formally discontinued but TI advises against using it in new projects."},{"question":"What is the direct replacement for LM3S1538-IBZ50-A2T?","answer":"No official direct replacement is listed in the available documentation. For new designs, consider migrating to a current TI Cortex-M4 or M33 family part with similar peripheral set, though a pin-compatible drop-in is not confirmed."},{"question":"What is LM3S1538-IBZ50-A2T's listed speed?","answer":"The core runs at 50 MHz, based on a 32-bit ARM Cortex-M3 architecture."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1538-IBZ50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1538-IBZ50-A2T 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}}