{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S611-EQN50-C2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S611-EQN50-C2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S611-EQN50-C2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S611-EQN50-C2T","rawCanonicalId":null},"summary":{"shortDescription":"Stellaris® ARM® Cortex®-M3S 600 series, LM3S611-EQN50-C2T, 32-bit single-core MCU, 50 MHz, 32 KB Flash, 8 KB SRAM, 48-LQFP, -40°C to 105°C.","salesMarkdown":"## 50 MHz Cortex-M3 with 32 KB Flash — the industrial-control sweet spot ## 32 KB Flash, 8 KB SRAM — sizing the firmware budget The 32 KB program memory (32K x 8) is Flash, so field updates are possible through the UART or SPI bootloader. The 8 KB SRAM (8K x 8) is the working memory for stack, heap, and data buffers. For a control loop with moderate data logging or a small TCP/IP stack, this memory tier works; a design with large lookup tables or a full RTOS will hit the ceiling. The 50 MHz core executes single-cycle multiply and a 12-cycle divide, which keeps the MIPS budget predictable for PID loops and sensor fusion. That means it can sit in an outdoor telecom cabinet, a factory-floor PLC, or an engine-bay controller without the firmware glitching from thermal drift. The Stellaris family was acquired from Luminary Micro and later rolled into the Tiva-C portfolio; no direct pin-compatible replacement was announced for this exact density and package. ## 48-LQFP footprint — board-level fit A layout engineer should verify the pin-for-pin compatibility against the target PCB; the 32 I/Os are multiplexed with the ADC and serial interfaces.","metaTitle":"LM3S611-EQN50-C2T Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"LM3S611-EQN50-C2T 32-bit ARM Cortex-M3 MCU at 50 MHz with 32 KB Flash, 8 KB SRAM, 48-LQFP. Industrial temp -40°C to 105°C.","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 600","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":"I²C, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"32","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Product Status":"Obsolete","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S611","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.2200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a24e941390104dc38b6d09cfea1a0f8f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S611-EQN50-C2T/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S611-EQN50-C2T?","answer":"Texas Instruments did not publish a direct pin-compatible replacement for this specific Stellaris part. The Tiva-C TM4C series is the architectural successor, but pinout and peripheral mapping differ. A firmware engineer would need to port the code and re-lay the board. For a BOM line that must keep the same footprint, the only option is to source the original LM3S611-EQN50-C2T through the surplus channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S611-EQN50-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/LM3S611-EQN50-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}}