{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1N11-IQC50-C1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1N11-IQC50-C1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1N11-IQC50-C1","factsUrl":"https://icboms.com/api/mcp/products/LM3S1N11-IQC50-C1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series microcontroller, LM3S1N11-IQC50-C1, 32-bit single-core, 50 MHz, 64 KB flash, 12 KB RAM, 67 I/O, 100-LQFP, -40 to 85°C.","salesMarkdown":"Texas Instruments has marked the LM3S1N11-IQC50-C1 as obsolete. For existing BOM lines, the part is sourced through independent distribution channels — quantities are lot-specific and confirmed at RFQ. ## 50 MHz Cortex-M3 — the performance floor At this speed the core delivers roughly 62.5 Dhrystone MIPS — enough for a control loop with moderate sensor fusion or a protocol stack (Modbus RTU, CANopen) without a co-processor. The 64 KB on-chip flash and 12 KB SRAM set the firmware and data footprint ceiling. A typical UART bootloader plus a small RTOS kernel leaves about 40 KB for application code and 6 KB for runtime variables — adequate for a single-axis motor controller or a temperature-logging node, but tight for a GUI stack or large lookup tables. The industrial temperature range (-40 to 85°C) qualifies it for factory-floor enclosures, outdoor telecom cabinets, and engine-bay-adjacent electronics where the ambient stays below the 85°C ceiling. ## Peripheral integration and I/O count 67 general-purpose I/O pins in a 100-LQFP package give the board designer room to connect parallel displays, keypads, and external memory buses without multiplexing. The peripheral set includes PWM, DMA, brown-out detect, POR, and a watchdog timer — enough on-chip resources to run a sensor hub or a brushless DC motor controller without external logic. Connectivity covers I2C, SPI, SSI, UART/USART, IrDA, LIN, and Microwire — a single part can bridge a CAN transceiver, an SPI flash, and an I2C temperature sensor. The 8-channel 10-bit ADC provides basic analog sampling for current-sense or thermistor inputs. The exposed paddle (if present on this variant) should be soldered to a ground-plane thermal pad — the datasheet's recommended footprint and stencil aperture are the starting point for the PCB layout. Surface-mount assembly with a tray shipping medium — the tray orientation and moisture sensitivity level (MSL) must be confirmed before the reflow profile is set. A bake cycle at 125°C for 48 hours is standard if the floor life has been exceeded.","metaTitle":"Texas Instruments LM3S1N11-IQC50-C1, 50 MHz Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S1N11-IQC50-C1 Stellaris ARM Cortex-M3 MCU, 50 MHz, 64 KB flash, 12 KB 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":"12K 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":"LM3S1N11","Program Memory Size":"64KB (64K 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/382ae1f60fbe7febad9e9e5bf72a2bb6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1N11-IQC50-C1/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the LM3S1N11-IQC50-C1?","answer":"The Stellaris ARM Cortex-M3S 1000 series has been superseded by the Tiva-C and newer Cortex-M4 families, which use different package footprints and peripheral maps. A board spin or firmware migration is required."},{"question":"What is the LM3S1N11-IQC50-C1's listed speed?","answer":"The core runs at 50 MHz. It is a 32-bit ARM Cortex-M3 single-core processor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1N11-IQC50-C1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1N11-IQC50-C1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:48:59.692Z","lastPublished":"2026-07-21T02:48:59.692Z","indexable":true}}