{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S102-IQN20-C2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S102-IQN20-C2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S102-IQN20-C2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S102-IQN20-C2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 100 series LM3S102-IQN20-C2T, 32-bit ARM Cortex-M3 MCU, 20 MHz, 8 KB Flash, 2 KB SRAM, 18 I/O, I²C/SPI/UART, 48-LQFP, -40°C to 85°C.","salesMarkdown":"Typical applications include sensor interfaces, simple control loops, and low-speed communication bridges in factory automation or building control equipment. ## Memory footprint and interface set With 8 KB of Flash and 2 KB of SRAM, firmware must be lean — a modest bootloader plus a few hundred lines of C. The 18 I/O pins and the I²C/SPI/UART peripherals are enough to aggregate data from a handful of digital sensors or control a few relays. ## NRND — plan your replacement now This means the manufacturer has flagged it for eventual discontinuation; new designs should not start with this part. For existing BOMs, the part remains available through independent distribution while supply lasts. A direct pin-compatible replacement from the same Stellaris family is not listed in the official record, so a redesign or a cross-ship evaluation of a similar Cortex-M3 MCU will be needed for production continuity.","metaTitle":"LM3S102-IQN20-C2T Stellaris ARM Cortex-M3 MCU, 20 MHz","metaDescription":"LM3S102-IQN20-C2T Stellaris ARM Cortex-M3 MCU, 20 MHz, 8 KB Flash, 2 KB SRAM, 48-LQFP, -40°C to 85°C. NRND. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"20MHz","Series":"Stellaris® ARM® Cortex®-M3S 100","Package":"Tape & Reel (TR)","RAM Size":"2K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"18","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Product Status":"Not For New Designs","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S102","Program Memory Size":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.9772","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S102-IQN20-C2T/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement or equivalent for LM3S102-IQN20-C2T?","answer":"No official pin-compatible replacement is listed in the manufacturer's records. A redesign using a similar Cortex-M3 MCU from the Stellaris family or a current-generation ARM MCU will be required. Contact us for cross-reference assistance."},{"question":"Can LM3S102-IQN20-C2T operate at 3.3V?","answer":"Yes, the supply voltage range is 3 V to 3.6 V, so 3.3 V operation is within spec. Power consumption depends on the clock speed and peripheral usage; the 20 MHz core draws current typical of a Cortex-M3 at that frequency."},{"question":"What is the programming interface for LM3S102-IQN20-C2T?","answer":"The part supports standard ARM Serial Wire Debug (SWD) and JTAG for programming and debugging, accessible through the 48-LQFP pins. The internal oscillator can be used, so no external clock is required for programming."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S102-IQN20-C2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S102-IQN20-C2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}