{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2939-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2939-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2939-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S2939-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 series MCU, LM3S2939-EQC50-A2, 32-Bit Single-Core, 50MHz, 256KB Flash, 64K x 8 RAM, CANbus/I²C/SPI/UART, 57 I/O, 100-LQFP, -40°C~105°C.","salesMarkdown":"It runs at 50 MHz from a 2.25 V to 2.75 V supply, with 256 KB of Flash program memory and 64 KB of RAM — enough for moderate-complexity firmware stacks like motor control loops, CAN-based sensor fusion, or multi-protocol gateway logic. Texas Instruments has marked the LM3S2939-EQC50-A2 as Obsolete. No official successor part number is published for this specific variant. For new designs, look at the TM4C12x family or other active Cortex-M4 parts in the same 100-LQFP footprint — but pin compatibility is not guaranteed.","metaTitle":"LM3S2939-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 256 KB Flash","metaDescription":"LM3S2939-EQC50-A2 32-bit ARM Cortex-M3 MCU from TI's Stellaris series. 50 MHz core, 256 KB Flash, 64 KB RAM, industrial temp -40°C to 105°C. Obsolete — sourced to order against RFQ","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 2000","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, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"57","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 3x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2939","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2939-EQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the recommended replacement for LM3S2939-EQC50-A2?","answer":"Texas Instruments has not published an official direct replacement for this specific order code. For new designs, consider the TM4C12x series of Cortex-M4 MCUs from TI, which share a similar peripheral set and 100-LQFP package option, but verify pin compatibility and software migration requirements before committing the BOM."},{"question":"What is LM3S2939-EQC50-A2's listed speed?","answer":"The core runs at 50 MHz, which is the maximum clock frequency for this Cortex-M3 device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2939-EQC50-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/LM3S2939-EQC50-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}}