{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1911-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1911-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1911-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1911-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series microcontroller, LM3S1911-EQC50-A2, 32-Bit Single-Core, 50MHz, 256KB Flash, 64K x 8 RAM, 100-LQFP.","salesMarkdown":"Texas Instruments has classified the LM3S1911-EQC50-A2 as obsolete. ## Core and memory for the BOM line On-chip memory includes 256 KB of Flash for program storage and 64 KB of SRAM — the SRAM-to-Flash ratio gives headroom for a moderate application stack plus a real-time OS footprint without external memory. ## Peripheral set and package fit Connectivity options include I²C, SPI, SSI, UART/USART, IrDA, and Microwire — the SSI and SPI lanes handle synchronous serial peripherals like ADCs or display controllers, while the UARTs support debug and fieldbus gateways. 60 general-purpose I/O pins are available. Housed in a 100-LQFP package (14x14 mm body) — the 0.5 mm pitch requires a four-layer PCB for clean fan-out of the outer rows. Supply voltage is 2.25 V to 2.75 V, a single 2.5 V rail. On-chip peripherals include brown-out detect, POR, PWM, and watchdog timer — the brown-out reset protects Flash integrity during a supply dip, and the PWM module drives motor-control or LED-dimming outputs without a dedicated timer peripheral.","metaTitle":"Texas Instruments LM3S1911-EQC50-A2 ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S1911-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 256KB Flash, 64KB 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":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"60","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1911","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/76cedae791b8f19cc703d1f7efaf9731.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order LM3S1911-EQC50-A2 or check availability?","answer":"The LM3S1911-EQC50-A2 is obsolete per Texas Instruments. Submit an RFQ for the quantity needed."},{"question":"What is the closest pin-compatible alternative to LM3S1911-EQC50-A2?","answer":"A board-level redesign may be required to migrate to a current Stellaris or Tiva-C family device."},{"question":"What is the LM3S1911-EQC50-A2's core speed and memory?","answer":"The ARM Cortex-M3 core runs at 50 MHz. Program memory is 256 KB Flash, and SRAM is 64 KB."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1911-EQC50-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1911-EQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:44:44.833Z","lastPublished":"2026-07-21T02:44:44.833Z","indexable":true}}