{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1918-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1918-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1918-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1918-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series microcontroller, LM3S1918-EQC50-A2, 50MHz, 256KB flash, 64KB RAM, 52 I/O, 100-LQFP, -40 to 105°C.","salesMarkdown":"## 50MHz Cortex-M3 core with 256KB flash The LM3S1918-EQC50-A2: This places it in the mid-range of Cortex-M3 performance — adequate for control loops, protocol bridging, and sensor fusion where the 50MHz ceiling sets the interrupt latency and throughput budget. On-chip memory consists of 256KB of flash and 64KB of SRAM. The 256KB flash holds a substantial firmware image including a real-time OS and communication stacks; the 64KB RAM leaves headroom for data buffers and stack frames in a typical control application. ## Industrial temperature grade and peripheral set The 2.25V to 2.75V supply rail is a narrow window — the board's 2.5V rail must be regulated within ±5% to keep the core powered correctly. Peripherals include 52 GPIOs, an 8-channel 10-bit ADC, and serial interfaces covering I²C, SPI, SSI, UART/USART, IrDA, and Microwire. The ADC resolution is 10-bit — adequate for monitoring analog signals like temperature or current sense where 0.1% accuracy is not required. On-chip brownout detect, POR, PWM, and WDT reduce external component count for reset supervision and timing. ## 100-LQFP package and board-fit Housed in a 100-LQFP with a 14x14mm body, the package has a 0.5mm pitch that demands a 4-layer PCB for reliable fan-out of the inner rows.","metaTitle":"Texas Instruments LM3S1918-EQC50-A2, 50MHz Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S1918-EQC50-A2 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":"Tray","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-A2/alternatives.json"},"ai":{"faq":[{"question":"What is LM3S1918-EQC50-A2's listed speed?","answer":"The core runs at 50MHz based on the ARM Cortex-M3 architecture. This is the maximum clock frequency; actual throughput depends on flash wait states and the memory bus configuration."},{"question":"How can I order LM3S1918-EQC50-A2 or check availability?","answer":"This obsolete part is sourced through independent distribution channels. Submit an RFQ for current availability and pricing; quantities are lot-specific and confirmed at quote time. No stock-holding claim is made — each order is quoted against the available surplus or broker inventory."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1918-EQC50-A2","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-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:45:03.953Z","lastPublished":"2026-07-21T02:45:03.953Z","indexable":true}}