{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S818-IQN50-C2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S818-IQN50-C2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S818-IQN50-C2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S818-IQN50-C2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 800 series LM3S818-IQN50-C2T, 32-Bit Single-Core MCU, 50MHz, 64KB Flash, 8K x 8 RAM, 48-LQFP, -40°C~85°C.","salesMarkdown":"This was a workhorse for cost-sensitive control designs — think pump controllers, sensor nodes, and industrial I/O modules — but it is now officially obsolete per the manufacturer. ## 50 MHz Cortex-M3 — enough for most real-time loops The 8 KB SRAM is tight — budget it carefully if you are running a real-time OS or a large data buffer. The 64 KB Flash is enough for mid-complexity firmware; if your code image is larger, you will need to look at a higher-density sibling or a newer family. ## Built-in ADC and peripherals — no external glue needed The 6-channel 10-bit ADC covers most analog-sensor inputs (temperature, pressure, current sense) without an external converter. The peripheral set includes brown-out detect, POR, PWM, and WDT — enough to build a self-contained controller with minimal BOM. The QEI is a nice bonus for motor-feedback designs, saving an external quadrature decoder chip. That means new-production units are gone from the factory; the only channel is independent distribution — broker inventory, surplus stock, or last-time-buy leftovers. For new designs, do not start with this part — look at TI's current Cortex-M4 or M0+ offerings in a similar pin-count and memory tier.","metaTitle":"LM3S818-IQN50-C2T Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"Obsolete LM3S818-IQN50-C2T 32-bit ARM Cortex-M3 MCU from TI's Stellaris series. 50 MHz core, 64 KB Flash, 8 KB RAM, 6x10-bit ADC, industrial temp.","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 800","Package":"Tape & Reel (TR)","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"30","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Product Status":"Obsolete","Data Converters":"A/D 6x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S818","Program Memory Size":"64KB (64K 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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/379f73dc505227f092e37eceebd3371d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for LM3S818?","answer":"Texas Instruments has not published a direct pin-compatible replacement for the LM3S818 in its lifecycle record. For new designs, consider TI's current-generation Cortex-M4 or M0+ MCUs in a 48-LQFP package with similar Flash and RAM — such as the TM4C123 or MSP432 families — but verify pinout and peripheral compatibility against your specific requirements."},{"question":"Does LM3S818 have a built-in ADC?","answer":"Yes, the LM3S818 includes a 6-channel 10-bit analog-to-digital converter on-chip."},{"question":"What is the difference between LM3S818 and LM3S811?","answer":"Both are Stellaris Cortex-M3 MCUs. Pinout and package (48-LQFP) are identical, so the LM3S811 is a potential drop-in for designs that do not need the quadrature encoder interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S818-IQN50-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/LM3S818-IQN50-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}}