{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6965-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6965-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6965-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S6965-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 6000 series LM3S6965-IBZ50-A2, 32-bit single-core MCU, 50MHz, 256KB Flash, 64KB RAM, Ethernet MAC, 2.25-2.75V supply, 42 I/O, 108-LFBGA (10x10), -40°C to 85°C, Tray.","salesMarkdown":"## Stellaris LM3S6965 — what this Cortex-M3 brings to a connected control design The LM3S6965-IBZ50-A2: Connectivity options cover Ethernet, I²C, IrDA, Microwire, QEI, SPI, SSI, and UART/USART, plus a 4-channel 10-bit ADC. Any remaining stock is held by independent distributors and surplus brokers. If the design is still in development, migrating to a current-production Cortex-M3 or Cortex-M4 with Ethernet MAC and similar memory sizing is worth evaluating for long-term supply. ## Package and layout — 108-BGA (10x10 mm) The 0.8 mm ball pitch is manageable with standard SMT assembly, but the board must be designed with via-in-pad or microvia escape routing for the inner balls. ## Firmware bring-up note The LM3S6965 boots from internal Flash with BOOT0 strapped low; the JTAG/SWD debug port stays alive even with the watchdog armed. The 50 MHz PLL requires the Flash wait state bumped to 1 before raising the core clock above the default, or the first branch instruction will hard-fault. The internal oscillator is available, but for Ethernet operation an external 25 MHz crystal is typically needed to clock the MAC.","metaTitle":"Texas Instruments LM3S6965-IBZ50-A2 ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments Stellaris LM3S6965-IBZ50-A2 ARM Cortex-M3 MCU, 50MHz, 256KB Flash, 64KB RAM, Ethernet MAC, -40°C to 85°C, 108-BGA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"50MHz","title":"LM3S6965-IBZ50-A2","Series":"Stellaris® ARM® Cortex®-M3S 6000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"Ethernet, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"42","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S6965","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/3fe7bdc483b32e42e29c70cf5772c9d4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S6965-IBZ50-A2 obsolete?","answer":"Yes, Texas Instruments lists the LM3S6965-IBZ50-A2 as obsolete. It is no longer in production and must be sourced through independent distribution or surplus channels."},{"question":"What is the replacement for LM3S6965-IBZ50-A2?","answer":"For a design still in development, consider migrating to a current-production Cortex-M3 or Cortex-M4 MCU with integrated Ethernet MAC and similar Flash/RAM sizing. For an existing BOM, the only sourcing path is the open market."},{"question":"Does LM3S6965-IBZ50-A2 have Ethernet?","answer":"Yes, the LM3S6965-IBZ50-A2 includes an integrated Ethernet MAC controller as part of its connectivity peripheral set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6965-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/LM3S6965-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}}