{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S3651-IQR50-A0T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S3651-IQR50-A0T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S3651-IQR50-A0T","factsUrl":"https://icboms.com/api/mcp/products/LM3S3651-IQR50-A0T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 3000 series LM3S3651-IQR50-A0T, 32-Bit Single-Core MCU, 50MHz, 128KB FLASH, 32K x 8 RAM, 33 I/O, 2.25V~2.75V, -40°C~85°C, 64-LQFP.","salesMarkdown":"That means Texas Instruments has flagged it for eventual phase-out — it's still available for existing production runs and repairs, but it's not the part to spec into a new BOM. If you're supporting a legacy board or filling a last-time-buy window, this MCU can be sourced through independent distribution on a quoted-to-order basis. The official replacement path leads to the Stellaris® LM3S family's later derivatives, though a direct pin-compatible drop-in is not confirmed in the record; verify the successor against your specific peripheral and memory requirements. The 50 MHz Cortex-M3 core delivers enough throughput for real-time control loops, protocol parsing, and USB packet handling without external memory. The 32K x 8 SRAM (32 KB) supports typical buffer sizes for USB and serial data streams. The 4-channel 10-bit ADC is adequate for analog sensor inputs like potentiometers, thermistors, or current shunts, but not for high-resolution measurement.","metaTitle":"LM3S3651-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"LM3S3651-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash, 32K x 8 RAM, 33 I/O, USB OTG, -40°C to 85°C, 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":"Tape & Reel (TR)","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 OTG","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 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S3651","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":"$11.4417","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S3651-IQR50-A0T/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S3651-IQR50-A0T?","answer":"An official pin-compatible replacement is not listed in the available record. The successor path leads to later Stellaris® LM3S family derivatives, but you should verify the exact peripheral set, memory size, and package compatibility against your application before substituting."},{"question":"What is LM3S3651-IQR50-A0T's listed speed?","answer":"The core processor runs at 50 MHz, which is the maximum clock speed for this ARM Cortex-M3 device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S3651-IQR50-A0T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S3651-IQR50-A0T 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}}