{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2651-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2651-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2651-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S2651-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 2000 series LM3S2651-EQC50-A2, 32-bit MCU, 50MHz core, 128KB Flash, 32KB RAM, 53 I/O, CAN/I2C/SPI/UART, 2.25-2.75V, -40 to 105°C, 100-LQFP.","salesMarkdown":"For BOM lines that still require this exact order code, procurement moves to the surplus and broker market. The ARM Cortex-M3 core runs at 50 MHz, a throughput tier suited for real-time control loops, CAN message handling, and sensor fusion in industrial or automotive subsystems. At this clock rate, the flash wait state must be configured correctly during boot — the 128 KB Flash (128K x 8) and 32 KB RAM (32K x 8) provide enough headroom for a modest RTOS and protocol stack, but firmware size should be audited against the 128 KB ceiling before committing the BOM. The 53 general-purpose I/O lines, mapped across the 100-LQFP package (14x14 mm body), give enough pins for parallel LCD data buses or multiple chip selects without external GPIO expanders. ## Temperature grade and supply voltage A brown-out detect and POR (Brown-out Detect/Reset, POR) are built in to handle supply droop without external supervisor ICs.","metaTitle":"TI LM3S2651-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S2651-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 32KB RAM, -40 to 105°C, 100-LQFP.","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 2000","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"53","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2651","Program Memory Size":"128KB (128K 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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2651-EQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is a direct replacement for LM3S2651-EQC50-A2?","answer":"The Stellaris family includes other Cortex-M3 devices with similar peripheral sets, but pin compatibility and exact memory sizing must be verified against the target board's BOM. For dual-sourcing or a drop-in replacement, review the Stellaris family's 100-LQFP variants with CAN and similar I/O counts, then confirm the footprint and firmware porting effort."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2651-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/LM3S2651-EQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}