{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6637-IQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6637-IQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6637-IQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S6637-IQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 6000 series 32-bit MCU, LM3S6637-IQC50-A2T, 50 MHz, 128 KB Flash, 32 KB SRAM, Ethernet, I²C, SPI, UART, 41 GPIO, 100-LQFP, -40°C to 85°C.","salesMarkdown":"The Texas Instruments LM3S6637-IQC50-A2T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris® series, running at 50 MHz with 128 KB of Flash program memory and 32 KB of SRAM. It carries an integrated Ethernet MAC and PHY alongside I²C, SPI, SSI, Microwire, UART/USART, and IrDA interfaces, making it a targeted part for networked embedded control — think industrial Ethernet gateways, protocol converters, or building-automation controllers that need a single-chip connection to a plant network. The 100-LQFP package with 41 GPIO and a 4-channel 10-bit ADC suits medium-density I/O boards where board space is tight but a full 32-bit core is required. At 50 MHz, this Cortex-M3 executes single-cycle multiply and hardware divide. ## Obsolete — sourcing reality for this order code Texas Instruments has marked the LM3S6637-IQC50-A2T as obsolete. No factory last-time-buy window remains open. ## Memory and connectivity — sizing the BOM fit The Ethernet MAC/PHY integration saves an external PHY chip.","metaTitle":"LM3S6637-IQC50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash","metaDescription":"Obsolete LM3S6637-IQC50-A2T 32-bit ARM Cortex-M3 MCU from TI Stellaris series. 50 MHz, 128 KB Flash, 32 KB SRAM, Ethernet, industrial temp. 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 6000","Package":"Tape & Reel (TR)","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"41","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S6637","Program Memory Size":"128KB (128K 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":"$14.8200","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S6637-IQC50-A2T/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LM3S6637-IQC50-A2T and get a price?","answer":"We source and quote this obsolete part to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ through this page for a real-time response."},{"question":"What is the closest pin-compatible alternative to LM3S6637-IQC50-A2T?","answer":"No pin-compatible drop-in exists within the TI Stellaris or TM4C families. The LM3S6637 is a specific die revision; a migration to the TM4C series requires a board redesign. For legacy repairs, this exact order code is the only fit."},{"question":"What is LM3S6637-IQC50-A2T's listed speed?","answer":"The core runs at 50 MHz, which is the maximum clock frequency for this Cortex-M3 device under the specified supply and temperature range."},{"question":"What series is LM3S6637-IQC50-A2T from?","answer":"It belongs to the Stellaris® ARM® Cortex®-M3S 6000 series from Texas Instruments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6637-IQC50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S6637-IQC50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}