{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1918-EQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1918-EQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1918-EQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1918-EQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series MCU, LM3S1918-EQC50-A2T, 50MHz, 256KB Flash, 64KB RAM, 100-LQFP, -40°C to 105°C.","salesMarkdown":"## What the 50 MHz Cortex-M3 core means for your board The LM3S1918-EQC50-A2T is a Stellaris-series ARM Cortex-M3 running at 50 MHz — enough throughput for real-time control loops, sensor fusion, or protocol bridging without needing an external DSP. With 52 GPIOs, eight 10-bit ADC channels, and a peripheral set that includes I²C, SPI, UART, and IrDA, this part can handle mixed-signal control and multiple serial buses from a single 100-pin LQFP package. ## Industrial temperature range and supply rails The core runs on a 2.25 V to 2.75 V supply, which is tighter than the 3.3 V single-rail many Cortex-M3s use — your board's regulator needs to hold that band across load steps. The internal oscillator saves a crystal on the BOM for applications that can tolerate ±1-2% accuracy. Texas Instruments has marked the LM3S1918-EQC50-A2T as obsolete. Quantities are lot-specific; no stock-holding claim is made here.","metaTitle":"LM3S1918-EQC50-A2T Texas Instruments MCU, 50MHz, 256KB Flash","metaDescription":"Texas Instruments LM3S1918-EQC50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz, 256KB Flash, 64KB 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":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"52","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":"LM3S1918","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$23.5700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/46084d62ef5295c959adf1f0b652baa1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1918-EQC50-A2T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1918-EQC50-A2T?","answer":"No official pin-compatible successor is recorded from Texas Instruments. The Stellaris family has been superseded by the Tiva C series (TM4C123/129), but those parts have different pinouts and peripheral maps — a board spin is required for migration."},{"question":"What is the listed speed of the LM3S1918-EQC50-A2T?","answer":"The core runs at 50 MHz. This is the Cortex-M3's maximum clock in this device; the flash wait-state controller may insert cycles above a certain frequency, but 50 MHz is the rated ceiling."},{"question":"What compliance documentation does Texas Instruments provide for LM3S1918-EQC50-A2T?","answer":"The part is supplied in Tape & Reel packaging. Standard TI documentation includes the datasheet and application notes. RoHS/REACH compliance status is not explicitly stated in the available records — confirm with the supplier at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1918-EQC50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1918-EQC50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:45:00.763Z","lastPublished":"2026-07-21T02:45:00.763Z","indexable":true}}