{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6950-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6950-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6950-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S6950-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 6000 LM3S6950-IBZ50-A2, 32-Bit Single-Core MCU, 50MHz, 256KB (256K x 8) FLASH, 64K x 8 RAM, 46 I/O, Ethernet/I²C/SPI/UART, 108-LFBGA (10x10 mm), -40°C~85°C.","salesMarkdown":"## 50 MHz Cortex-M3 with Ethernet — what this MCU brings ## 256 KB Flash, 64 KB RAM — sizing the memory for your application That's enough for a FreeRTOS application with Ethernet connectivity and a modest command-line interface, but tight for a full GUI or heavy data logging. The RAM is 64K x 8 — 64 KB — so plan your buffers accordingly, especially if you're running a TCP stack with multiple sockets. Program memory is Flash only — no OTP or EEPROM option on this die. Field updates are possible via the Ethernet or UART bootloader, but you'll need to manage wear levelling yourself if writing frequently. For new designs, TI recommends migrating to a current Stellaris or Tiva-C series device. ## 108-ball BGA — layout and rework considerations The package is a 108-ball LFBGA, 10x10 mm body. That's a fine-pitch BGA that requires a solder-mask-defined pad and a four-layer PCB minimum for fanout. ## On-chip peripherals and debug The LM3S6950 includes brown-out detect, POR, a PWM module, and a watchdog timer. Internal oscillator is available, so you can boot without a crystal.","metaTitle":"LM3S6950-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"LM3S6950-IBZ50-A2 is a 32-bit ARM Cortex-M3 MCU from TI's Stellaris series. 50 MHz core, 256 KB Flash, 64 KB RAM, Ethernet MAC. 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 6000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","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":"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":"LM3S6950","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/35b7bddf652db86cd5172aa032feb8f0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S6950-IBZ50-A2 obsolete?","answer":"Yes. TI's official product status is 'Obsolete'. No last-time-buy is active. For new production designs, plan a migration to a current Stellaris or Tiva-C device."},{"question":"What is the replacement for LM3S6950-IBZ50-A2?","answer":"However, the LM3S6965 is also obsolete. For a current-design path, consider the TM4C129x series (Tiva-C) which has a Cortex-M4F core, more memory, and active lifecycle support."},{"question":"What are the specifications of LM3S6950-IBZ50-A2?","answer":"Core: ARM Cortex-M3 at 50 MHz. Memory: 256 KB Flash, 64 KB SRAM. Connectivity: Ethernet MAC, I²C, SPI, SSI, UART, IrDA, Microwire, QEI. I/O: 46 GPIOs. Package: 108-ball LFBGA (10x10 mm). Temperature: -40°C to 85°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6950-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/LM3S6950-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}}