{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S3634-IQR50-A0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S3634-IQR50-A0","canonicalUrl":"https://icboms.com/texas-instruments/LM3S3634-IQR50-A0","factsUrl":"https://icboms.com/api/mcp/products/LM3S3634-IQR50-A0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 3000 32-bit MCU, LM3S3634-IQR50-A0, 50 MHz, 128 KB Flash, 32 KB RAM, 64-LQFP, -40 to 85°C, Tray.","salesMarkdown":"## NRND — last-time-buy window, no official successor Texas Instruments lists the LM3S3634-IQR50-A0 as NRND (Not Recommended for New Designs). The part is still available for existing production runs, but TI has not published a last-time-buy cutoff date in the current lifecycle record. No pin-compatible or functional successor is listed on the manufacturer's cross-reference — any BOM migration will require a board spin and firmware port. ## 50 MHz Cortex-M3 — 128 KB flash, 32 KB RAM, USB, industrial temp The ARM Cortex-M3 core runs at 50 MHz — enough for a control loop with a moderate protocol stack (USB + UART + SPI) without external memory. The 128 KB flash and 32 KB RAM leave room for a real-time OS kernel and application buffers in a sensor hub or motor drive interface. Connectivity includes USB (device/host/OTG), I2C, SPI, SSI, UART/USART, and IrDA — the peripheral set covers industrial fieldbus bridging and human-machine interface communication. Eight 10-bit ADC channels handle analog feedback from current shunts or thermistors. Operating temperature spans -40 to 85°C, so the part fits factory-floor enclosures and outdoor equipment without active cooling. ## 64-LQFP 10x10 mm — board integration and GPIO Surface-mount assembly standard — no special bake requirements for the tray packaging unless the MSL (Moisture Sensitivity Level) label on the reel indicates a floor life shorter than the assembly floor time. Verify the date code on the tray before reflow.","metaTitle":"TI LM3S3634-IQR50-A0 Cortex-M3 MCU, 50 MHz, 128 KB Flash","metaDescription":"Texas Instruments LM3S3634-IQR50-A0 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB flash, 32 KB RAM, 64-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 3000","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, SPI, SSI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"33","Core Processor":"ARM® Cortex®-M3","Package / Case":"64-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S3634","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$21.9537","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c6269147b487c4b8701eba2d848d3379.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S3634-IQR50-A0/alternatives.json"},"ai":{"faq":[{"question":"How can I get pricing and availability for LM3S3634-IQR50-A0?","answer":"Submit an RFQ through this listing. We source the part through independent distribution channels, confirming current pricing and available quantities at quote time. No stock-holding claim is made on the page; availability is confirmed per request."},{"question":"What is the closest pin-compatible alternative to LM3S3634-IQR50-A0?","answer":"Texas Instruments has not published an official pin-compatible successor for this NRND part. Any replacement will require a different package and pinout — a board spin is necessary. The Stellaris family includes other Cortex-M3 parts, but none are direct drop-in substitutes without firmware and layout changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S3634-IQR50-A0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S3634-IQR50-A0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:54:11.132Z","lastPublished":"2026-07-21T02:54:11.132Z","indexable":true}}