{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1F11-IQC50-A1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1F11-IQC50-A1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1F11-IQC50-A1","factsUrl":"https://icboms.com/api/mcp/products/LM3S1F11-IQC50-A1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series, LM3S1F11-IQC50-A1, 32-Bit Single-Core MCU, 50MHz, 384KB Flash, 48K x 8 RAM, 100-LQFP, -40°C~85°C.","salesMarkdown":"## 50MHz Cortex-M3 with 384KB flash — the scorch-mark tells you this one powered the display controller The LM3S1F11-IQC50-A1 is a Texas Instruments Stellaris ARM Cortex-M3S 1000 series microcontroller, a 32-bit single-core part clocked at 50MHz with 384KB of program flash and 48KB of SRAM. The 384KB flash is enough for a moderate application stack plus a bootloader; the 48KB RAM leaves room for a real-time OS heap and frame buffers for a small TFT display or a serial protocol buffer. The 67 GPIOs break out through the 100-LQFP, giving plenty of headroom for parallel buses and discrete I/O. ## Peripheral set and supply rail Connectivity includes EBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, and UART/USART — enough to talk to external memory, sensors, actuators, and a CAN transceiver through the LIN interface. The core runs on a 1.235V to 1.365V supply rail — a narrow window that demands a precision regulator. Brown-out detect and POR are built in, so the reset circuit is simpler than on parts without them. The internal oscillator means you can bring up the UART without an external crystal, though the accuracy is lower than a canned oscillator. Texas Instruments has marked the LM3S1F11-IQC50-A1 as Obsolete. If you are repairing a board that has this part, the scorch mark tells you which one died — and the replacement is the same order code. For new designs, a board spin is required to migrate to a current Cortex-M3 or M4 part from TI or a competitor.","metaTitle":"TI LM3S1F11-IQC50-A1 Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S1F11-IQC50-A1 Stellaris ARM Cortex-M3S 1000 MCU, 50MHz, 384KB flash, 48KB RAM, 100-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 1000","Package":"Tray","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":"How can I order the LM3S1F11-IQC50-A1 or check availability?","answer":"The LM3S1F11-IQC50-A1 is obsolete and sourced through independent distribution. Submit an RFQ for current availability and pricing — quantities are confirmed at quote time. No stock-holding claim is made; each order is quoted against the BOM quantity."},{"question":"What is the closest pin-compatible alternative to the LM3S1F11-IQC50-A1?","answer":"The Stellaris family has been superseded by the Tiva C series, but those parts are not pin-compatible — a board layout change is required. For repair, source the exact LM3S1F11-IQC50-A1 through surplus channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1F11-IQC50-A1","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-A1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:47:18.130Z","lastPublished":"2026-07-21T02:47:18.130Z","indexable":true}}