{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2637-IQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2637-IQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2637-IQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S2637-IQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 2000 32-Bit MCU, LM3S2637-IQC50-A2, 50MHz, 128KB Flash, 32KB RAM, 46 I/O, 100-LQFP, -40 to 85°C.","salesMarkdown":"## Core and memory profile The LM3S2637-IQC50-A2: On-chip memory includes 128 KB of Flash and 32 KB of SRAM, which is enough to run a real-time control loop with a moderate protocol stack. The 46 general-purpose I/O lines and the integrated CAN, I²C, SPI, UART, and IrDA interfaces let it handle mixed-fieldbus gateways or motor-drive control panels without external transceivers for the low-speed links. ## Lifecycle reality and sourcing Texas Instruments has marked the LM3S2637-IQC50-A2 as obsolete. For production or repair BOMs that require this exact part number, the only channel is independent distribution — surplus and new-old-stock lots, confirmed at RFQ. Because there is no pin-compatible replacement from the original manufacturer, a board spin or firmware migration to a current Cortex-M4 or M7 part is the only long-term path. For short-run or bridge quantities, we source through verified surplus channels with full traceability.","metaTitle":"Texas Instruments LM3S2637-IQC50-A2 ARM Cortex-M3 MCU, 50MHz","metaDescription":"Obsolete Stellaris ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 32KB RAM, 46 I/O, -40 to 85°C. Sourced to order against RFQ through independent distribution.","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":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"46","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2637","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":"$19.5222","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2637-IQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the LM3S2637-IQC50-A2?","answer":"A migration to a current Stellaris or Tiva C Series device would require a PCB layout change and firmware port."},{"question":"What is the LM3S2637-IQC50-A2's listed speed and memory?","answer":"The core runs at 50 MHz. On-chip memory is 128 KB of Flash and 32 KB of SRAM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2637-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/LM3S2637-IQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:51:14.633Z","lastPublished":"2026-07-21T02:51:14.633Z","indexable":true}}