{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1N11-IQC50-C1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1N11-IQC50-C1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1N11-IQC50-C1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1N11-IQC50-C1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series MCU, LM3S1N11-IQC50-C1T, 32-bit single-core, 50MHz, 64KB flash, 12KB RAM, 100-LQFP, -40°C to 85°C.","salesMarkdown":"## 50 MHz Cortex-M3 with 64 KB flash — what fits in that memory map The LM3S1N11-IQC50-C1T is a Stellaris® ARM® Cortex®-M3S 1000 series MCU from Texas Instruments, running a 32-bit single-core Cortex-M3 at 50 MHz. On-chip memory is 64 KB of flash and 12 KB of SRAM — enough for a modest RTOS kernel, a USB stack, and one or two protocol stacks (say, a CANopen node or a Modbus RTU slave) before the linker starts complaining about.bss overflow. The 67 GPIOs come out to a 100-LQFP package (14x14 mm body). That pin count gives you room for a parallel LCD data bus, a row-column keypad matrix, and still leaves a dozen lines for sensor interrupts and status LEDs. ## Industrial temperature grade and supply range — where this MCU survives The internal oscillator eliminates the external crystal for most applications — the clock tree starts up in a few hundred microseconds, and the PLL locks to 50 MHz without a separate 8 MHz can. If you need tighter timing for CAN or USB, the peripheral set includes an external oscillator input. ## Peripherals and connectivity — what the on-chip blocks actually do The connectivity block covers I²C, SPI, SSI, UART/USART, LIN, IrDA, and Microwire — enough to talk to a temperature sensor over I²C, a motor encoder over SPI, and a host controller over UART simultaneously. The 8-channel 10-bit ADC samples at rates suitable for reading potentiometers, current-sense resistors, or thermistor dividers — not fast enough for audio, but adequate for feedback loops in a brushed DC motor controller. On-chip peripherals include a brown-out detect/reset (BOD), power-on reset (POR), a watchdog timer (WDT), a PWM module, and a DMA controller. The DMA can move ADC results to SRAM without CPU intervention — useful when the core is busy servicing a UART interrupt at 115200 baud. ## Obsolete — what that means for your BOM line Texas Instruments has marked the LM3S1N11-IQC50-C1T as obsolete. The Stellaris family was migrated to the Tiva C series years ago, but the pinout and register map differ — a board spin is required to use a Tiva part. Quantities are lot-specific and confirmed at RFQ time.","metaTitle":"LM3S1N11-IQC50-C1T Texas Instruments Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S1N11-IQC50-C1T Stellaris ARM Cortex-M3 MCU, 50MHz, 64KB flash, 12KB 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":"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-C1T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1N11-IQC50-C1T?","answer":"The Stellaris family was superseded by the Tiva C series, which uses a different pinout and register map — a PCB redesign is required."},{"question":"What is the LM3S1N11-IQC50-C1T's core speed and memory?","answer":"The Cortex-M3 core runs at 50 MHz. On-chip memory is 64 KB of flash and 12 KB of SRAM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1N11-IQC50-C1T","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-C1T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:49:00.454Z","lastPublished":"2026-07-21T02:49:00.454Z","indexable":true}}