{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5632-IQR50-A0T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5632-IQR50-A0T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5632-IQR50-A0T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5632-IQR50-A0T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series MCU, LM3S5632-IQR50-A0T, 32-bit single-core at 50MHz, 128KB Flash, 32KB RAM, 33 I/O, CANbus, USB OTG, SPI, UART/USART, 64-LQFP, -40 to 85°C.","salesMarkdown":"## NRND — plan the migration now The LM3S5632-IQR50-A0T carries a Not Recommended for New Designs (NRND) lifecycle status. This is not an immediate discontinuation, but TI has flagged it for eventual phase-out. Any new design-in should target a pin-compatible successor within the Stellaris family or a current-production Cortex-M3 from TI's portfolio to avoid a future last-time-buy crunch. ## Peripheral set and on-chip resources On-chip data converters include a 6-channel 10-bit ADC, adequate for reading potentiometers, current-sense resistors, or thermistor dividers in a control loop. DMA offloads the Cortex-M3 for memory-to-peripheral transfers without stalling the core. Housed in a 64-LQFP package with a 10x10 mm body, the LM3S5632-IQR50-A0T uses a standard 0.5 mm pitch QFP footprint. This is a hand-solderable, inspectable package — no X-ray needed for rework. The 33 I/O lines are accessible on the peripheral pins, leaving room for a 4-layer board with a dedicated 2.5 V plane.","metaTitle":"LM3S5632-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S5632-IQR50-A0T 32-bit ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 32KB RAM, 33 I/O, CAN/USB/SPI/UART, -40 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 5000","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":"CANbus, 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 6x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5632","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":"$22.8306","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e885aa79124afc8ed6451e5483413269.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5632-IQR50-A0T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S5632-IQR50-A0T obsolete?","answer":"It is not yet discontinued, but TI advises against using it in new designs."},{"question":"What is the replacement for LM3S5632-IQR50-A0T?","answer":"TI has not published a direct drop-in replacement order code for this NRND part. Within the Stellaris family, the LM3S5633 (a sibling with the same pinout and 50 MHz core but 64 KB RAM instead of 32 KB) is the closest functional match, though its lifecycle status should be verified separately before design-in. For a current-production path, consider TI's TM4C series Cortex-M4F parts — they offer a superset of peripherals and a 3.3 V supply rail, but require a board respin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5632-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/LM3S5632-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}}