{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S811-IQN50","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S811-IQN50","canonicalUrl":"https://icboms.com/texas-instruments/LM3S811-IQN50","factsUrl":"https://icboms.com/api/mcp/products/LM3S811-IQN50","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris LM3S811-IQN50, ARM Cortex-M3S 800 series, 32-bit single-core MCU at 50MHz, 64KB Flash, 8KB RAM, 32 I/O, 3–3.6V supply, 48-LQFP, -40°C to 85°C.","salesMarkdown":"At 50MHz the Cortex-M3 core delivers about 1.25 DMIPS/MHz, putting it in the same processing tier as the NXP LPC1768 or STM32F103 at similar clock rates. That is enough headroom to run a modest RTOS with a control loop and a communication stack without hitting the ceiling. The Flash uses zero-wait-state access up to around 25MHz; above that the prefetch buffer and a single wait state keep the pipeline fed — something to budget for in interrupt latency if your ISR chains are deep. TI has moved on from the Stellaris line; the last-time-buy window closed years ago. New production is not available through the factory channel. ## Pin-compatible alternatives and second sources The LM3S811 is part of a pin-compatible family within the Stellaris ARM Cortex-M3S 800 series. Parts sharing the same 48-LQFP footprint and supply range — such as the LM3S811-IGN50 — are drop-in replacements at the board level, differing only in temperature grade or packaging.","metaTitle":"TI LM3S811-IQN50 Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S811-IQN50, 32-bit ARM Cortex-M3 MCU at 50MHz, 64KB Flash, 8KB RAM, 32 I/O, -40°C to 85°C, 48-LQFP.","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 800","Package":"Tray","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"32","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Product Status":"Obsolete","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S811","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/dd191d024de65e42450982a8f52c6d32.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S811-IQN50 compatible with LM3S811?","answer":"Yes — the LM3S811-IQN50 is a specific ordering code within the LM3S811 base product number. The base number LM3S811 covers the same die with the same 64KB Flash, 8KB RAM, and peripheral set. The suffix -IQN50 denotes the 50MHz speed grade, 48-LQFP package, and industrial temperature range. Any LM3S811 variant with the same package and speed grade is functionally identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S811-IQN50","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S811-IQN50 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}}