{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S8970-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S8970-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S8970-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S8970-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 8000 series LM3S8970-IBZ50-A2, 32-bit ARM Cortex-M3 MCU, 50 MHz, 256 KB Flash, 64 KB RAM, Ethernet + CAN + I²C + SPI + UART, -40°C to 85°C, 108-LFBGA (10x10 mm), Tray.","salesMarkdown":"Production has ended; there is no current factory lead time or LTB window to enter. Sourcing now runs through independent distribution — we quote against an RFQ, confirm availability at quote time, and ship from verified surplus or new-old-stock inventory. For a BOM line that must stay on this footprint, the independent channel is the only option. ## 50 MHz Cortex-M3 with Ethernet and CAN — what it buys you The ARM Cortex-M3 core runs at 50 MHz, a comfortable mid-range speed for industrial control, building automation, and gateway applications that need to run a lightweight TCP/IP stack and a CANopen node without breaking a sweat. That Ethernet+CAN combination is rare in the 50 MHz Cortex-M3 class — most peers offer one or the other, not both on-chip. The 46 GPIOs give enough headroom for a parallel LCD interface or a bank of opto-isolated inputs while keeping serial peripherals active. The internal oscillator reduces external BOM count, but for Ethernet timing accuracy an external crystal is still recommended. ## 108-BGA (10x10 mm) — layout notes The 108-ball LFBGA on a 10x10 mm body with 0.8 mm pitch is a four-layer minimum footprint — two signal layers plus a solid ground plane and a power plane for the 2.5 V rail. The BGA's center balls carry VDD and VSS; a via-in-pad or at least a dogbone breakout is needed for the inner rows. No exposed thermal pad on this package; heat dissipation is through the solder balls and the PCB copper.","metaTitle":"LM3S8970-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"Obsolete Stellaris ARM Cortex-M3 MCU from TI. 50 MHz core, 256 KB Flash, 64 KB RAM, Ethernet+CAN+serial. Industrial temp -40°C 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":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 8000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"46","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S8970","Program Memory Size":"256KB (256K 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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6fea3fcd4184acd17fff2b0978d1a133.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the LM3S8970-IBZ50-A2?","answer":"Submit an RFQ — we quote against your quantity and confirm availability and current pricing at quote time. No stock figures or price can be published here; the supply posture is confirmed per inquiry."},{"question":"Is the LM3S8970-IBZ50-A2 obsolete?","answer":"Yes, the LM3S8970-IBZ50-A2 carries an Obsolete product status. TI no longer manufactures it, and there is no active LTB window. All sourcing is from verified surplus or new-old-stock inventory through independent distributors."},{"question":"What is the replacement for the LM3S8970-IBZ50-A2?","answer":"TI's Tiva-C or later Cortex-M4F series are functional successors but require a board redesign due to different package, supply voltage, and peripheral mapping. There is no pin-compatible drop-in replacement."},{"question":"Does the LM3S8970 support Ethernet?","answer":"Yes, the LM3S8970 includes an integrated Ethernet MAC+PHY as part of its connectivity set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S8970-IBZ50-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S8970-IBZ50-A2 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}}