{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6950-IQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6950-IQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6950-IQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S6950-IQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 6000 series microcontroller, LM3S6950-IQC50-A2, 50 MHz 32-bit single-core, 256 KB Flash, 64 KB RAM, 46 I/O, Ethernet, I²C, SPI, SSI, UART, -40°C to 85°C, 100-LQFP 14x14 mm, tray.","salesMarkdown":"## 50 MHz Cortex-M3 with on-chip Ethernet MAC The LM3S6950-IQC50-A2 is a Stellaris ARM Cortex-M3S 6000 series microcontroller from Texas Instruments, built around a 32-bit ARM Cortex-M3 core clocked at 50 MHz. The 256 KB on-chip Flash and 64 KB RAM give enough room for a real-time OS, TCP/IP stack, and application buffers without external memory. The integrated Ethernet MAC (part of the connectivity block) handles 10/100 Mbit frames directly, which means this MCU can serve as a field controller or gateway node on an industrial network without an external PHY — though the PHY interface is still needed at the board level. ## Industrial temperature grade and supply simplicity The 46 GPIOs in this package count are enough to drive a parallel character LCD, a keypad matrix, and a few status LEDs without external port expanders. ## Peripheral set and connectivity mix Beyond Ethernet, the serial interface suite includes I²C, SPI, SSI, UART/USART, IrDA, and Microwire — covering most sensor buses and actuator links common in industrial control. The Quadrature Encoder Interface (QEI) directly decodes incremental encoder signals for motor position feedback without external logic. On-chip brown-out detect, POR, PWM, and watchdog timer reduce the need for external supervisor ICs. The internal oscillator means a crystal is optional for applications that can tolerate the internal accuracy — saving a board component and a layout trace. ## Active lifecycle — sourcing for production and MRO The base product number LM3S6950 covers the family; the -IQC50-A2 suffix encodes the temperature grade, speed, and package variant. Store the reels in dry storage — the 100-LQFP is moisture-sensitive per JEDEC MSL level 3, so bake before reflow if the floor life is exceeded.","metaTitle":"TI LM3S6950-IQC50-A2 Cortex-M3 MCU, 50 MHz, 256 KB Flash","metaDescription":"Texas Instruments LM3S6950-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 256 KB Flash, 64 KB RAM, Ethernet, 46 I/O, -40°C to 85°C, 100-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"50MHz","title":"LM3S6950-IQC50-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":"46","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","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":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$52.4800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/35b7bddf652db86cd5172aa032feb8f0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S6950-IQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative in the Stellaris family?","answer":"Within the Stellaris ARM Cortex-M3S 6000 series, the LM3S6965 and LM3S6918 share the same 100-LQFP footprint and supply voltage range, but differ in Flash/RAM sizes and peripheral mix. The LM3S6950 is the 256 KB Flash / 64 KB RAM variant with Ethernet. Confirm the specific BOM position before substituting — the memory and peripheral differences may require firmware changes."},{"question":"What compliance documentation does Texas Instruments provide for this MCU?","answer":"Texas Instruments provides RoHS and REACH compliance declarations for the LM3S6950-IQC50-A2. The part is lead-free and the 100-LQFP package is halogen-free per TI's material disclosure. No UL or IEC certification is listed for this microcontroller — those standards typically apply to the end-equipment, not the IC itself."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6950-IQC50-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-IQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}