{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1937-IQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1937-IQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1937-IQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1937-IQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series MCU, LM3S1937-IQC50-A2, 32-bit single-core, 50MHz, 256KB flash, 64KB RAM, 100-LQFP.","salesMarkdown":"## Cortex-M3 at 50 MHz — what the clock buys you The LM3S1937-IQC50-A2 runs a single ARM Cortex-M3 core at 50 MHz, delivering roughly 1.25 DMIPS/MHz for control-loop and protocol-processing tasks that do not need a floating-point unit or a cache. At this clock, a 256 KB flash with zero-wait-state access at lower speeds may introduce one wait cycle above ~25 MHz — budget the flash-read latency when sizing interrupt response and tight loops. ## Memory budget — flash and RAM split 256 KB of on-chip flash holds the application image and any constant data; 64 KB of SRAM is the runtime workspace for stack, heap, and volatile variables. A typical bare-metal or RTOS-based control application (sensor polling, Modbus stack, PID loops) leaves 40–60 KB of flash free after the HAL and bootloader — enough for moderate expansion but tight for a full TCP/IP stack with a web server. ## Industrial temperature range and supply rail The single supply rail spans 2.25 V to 2.75 V — a 3.3 V bus needs an external LDO, and the core logic sees no brown-out below 2.25 V thanks to the integrated POR and brown-out detect. ## Obsolete — sourcing through surplus channels Available through independent distribution against an RFQ; each lot is verified for authenticity and date-code traceability before shipment.","metaTitle":"TI LM3S1937-IQC50-A2 Cortex-M3 MCU, 50MHz, 256KB Flash","metaDescription":"Texas Instruments LM3S1937-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 256KB Flash, 64KB RAM, 100-LQFP. Obsolete; sourced to order.","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":"56","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":"LM3S1937","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.6764","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1410109faa94f8575689d533cdece4b5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1937-IQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"How can I order the LM3S1937-IQC50-A2 or check availability?","answer":"This part is obsolete and sourced through independent surplus channels. Submit an RFQ for current pricing and lot availability; quantities and date codes are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1937-IQC50-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/LM3S1937-IQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:45:35.650Z","lastPublished":"2026-07-21T02:45:35.650Z","indexable":true}}