{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1F11-IQC50-A1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1F11-IQC50-A1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1F11-IQC50-A1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1F11-IQC50-A1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series microcontroller, LM3S1F11-IQC50-A1T, 32-bit single-core, 50MHz, 384KB flash, 48KB RAM, 100-LQFP.","salesMarkdown":"Texas Instruments has marked the LM3S1F11-IQC50-A1T as Obsolete. ## Core architecture and memory headroom This is the Stellaris 1000 series — the first-generation Cortex-M3 line from TI, positioned for control and connectivity applications that need a balance of throughput and peripheral integration. On-chip memory comprises 384KB of flash (384K x 8) and 48KB of SRAM (48K x 8). For a control-loop application, the 48KB RAM leaves room for a moderate stack, a few communication buffers, and the HAL footprint — but a heavy TCP/IP stack or a large frame buffer will push the budget. The connectivity list is broad: EBI/EMI for external memory or parallel peripherals, plus I²C, SPI, SSI, UART/USART, IrDA, LINbus, and Microwire. On-chip peripherals include a brown-out detect/reset, DMA controller, POR, PWM, and a watchdog timer. The internal oscillator means the part can run without an external crystal in less timing-critical applications — though for USB or CAN, an external clock source is still the safer call. The core supply range is 1.235V to 1.365V — a tight window that demands a regulated 1.25V or 1.3V rail, not a 1.8V or 3.3V supply directly. The 0.5 mm pitch LQFP-100 is a standard footprint — four-layer boards are typical for fan-out, though two-layer can work if the inner rows are routed to vias under the body.","metaTitle":"TI LM3S1F11-IQC50-A1T ARM Cortex-M3 MCU, 50MHz, 384KB Flash","metaDescription":"Texas Instruments LM3S1F11-IQC50-A1T Stellaris ARM Cortex-M3 MCU, 50MHz, 384KB Flash, 48KB RAM, 100-LQFP. Obsolete. Sourced to order against RFQ.","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 1000","Package":"Tape & Reel (TR)","RAM Size":"48K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"EBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"67","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 8x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1F11","Program Memory Size":"384KB (384K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.235V ~ 1.365V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/da482a497db9073f889a6a92b2dda55b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1F11-IQC50-A1T?","answer":"No official pin-compatible successor is documented by Texas Instruments for this specific order code. The Stellaris 1000 series has been superseded by later Cortex-M3 and Cortex-M4 families (Tiva C Series), but those are not pin-compatible — a board spin is required for migration."},{"question":"What compliance documentation does Texas Instruments provide for LM3S1F11-IQC50-A1T?","answer":"The part is RoHS-compliant per TI's standard material declaration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1F11-IQC50-A1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1F11-IQC50-A1T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:47:20.419Z","lastPublished":"2026-07-21T02:47:20.419Z","indexable":true}}