{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1J11-IQC50-C3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1J11-IQC50-C3","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1J11-IQC50-C3","factsUrl":"https://icboms.com/api/mcp/products/LM3S1J11-IQC50-C3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series, LM3S1J11-IQC50-C3, 32-bit Single-Core MCU, 50 MHz, 128KB FLASH, 20K x 8 RAM, 100-LQFP, -40°C~85°C.","salesMarkdown":"## What this Stellaris MCU is and where it fits The LM3S1J11-IQC50-C3 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris series. It runs at 50 MHz with 128 KB of Flash and 20 KB of SRAM. ## 50 MHz core — what it means for the control loop The 50 MHz clock rate on this Cortex-M3 core is enough for single-loop PID updates at several kilohertz, Modbus RTU packet handling, and basic sensor fusion. It is not a high-end number — you would not use it for gigabit Ethernet bridging or real-time FFT on large arrays — but for a dedicated control MCU on a motor drive or a remote I/O slice, 50 MHz with zero-wait-state Flash access keeps the bus margin comfortable. ## 128 KB Flash and 20 KB RAM — sizing the firmware 128 KB of Flash holds a moderate application: a bootloader, a real-time kernel, communication stacks for two or three protocols, and the application code. The 20 KB of SRAM leaves room for a few hundred bytes of stack per task plus a data buffer for ADC samples or UART FIFOs. If your BOM calls for more than 20 KB of runtime data, this part will force external SRAM or a memory-map reshuffle. ## Obsolete — what that means for procurement The LM3S1J11-IQC50-C3 is marked obsolete by Texas Instruments. No last-time-buy window remains open through the factory channel. ## Peripherals and I/O — what is on the pins The 67 GPIOs are multiplexed with the serial interfaces and the PWM outputs. The part includes a brown-out detect and reset circuit, a DMA controller, a POR monitor, PWM generation, and a watchdog timer. An internal oscillator is available, so a crystal is optional for applications that can tolerate the internal accuracy. The 10-bit ADC has eight channels — enough for reading potentiometers, current-sense resistors, or thermistor dividers without an external mux.","metaTitle":"LM3S1J11-IQC50-C3 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash","metaDescription":"Obsolete LM3S1J11-IQC50-C3 32-bit MCU from TI's Stellaris series. ARM Cortex-M3 core at 50 MHz with 128 KB Flash, 20 KB RAM, 67 GPIOs. Sourced to order against RFQ through independ","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":"20K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"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 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1J11","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.08V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/289a17a5d668d4d2eb268ac847fb8dc1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S1J11-IQC50-C3 obsolete?","answer":"Yes, Texas Instruments has marked the LM3S1J11-IQC50-C3 as obsolete. No factory production remains; availability is limited to surplus and independent-distributor stock."},{"question":"What is the replacement for LM3S1J11-IQC50-C3?","answer":"No official replacement part number is listed by Texas Instruments for this MCU. For a fielded design, a pin-compatible Stellaris-family device with similar memory and peripheral set would be the first candidate to evaluate, but no direct drop-in successor is documented."},{"question":"Where can I buy LM3S1J11-IQC50-C3?","answer":"This obsolete part is sourced through independent distribution channels. Availability and current pricing are confirmed at quote time against an RFQ — no stock level or lead time is published."},{"question":"What are the specifications of LM3S1J11-IQC50-C3?","answer":"It is a 32-bit ARM Cortex-M3 MCU running at 50 MHz, with 128 KB Flash, 20 KB SRAM, 67 GPIOs, eight 10-bit ADC channels, and serial interfaces including I²C, SPI, UART, and LIN. Operating temperature range is -40°C to 85°C, and it comes in a 100-pin LQFP package."},{"question":"What is the operating temperature of LM3S1J11-IQC50-C3?","answer":"The industrial temperature grade covers -40°C to 85°C, suitable for factory-floor and outdoor enclosure environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1J11-IQC50-C3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1J11-IQC50-C3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T18:12:59.411Z","lastPublished":"2026-07-11T18:12:59.411Z","indexable":true}}