{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1937-IBZ50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1937-IBZ50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1937-IBZ50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1937-IBZ50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series, LM3S1937-IBZ50-A2T, 32-Bit Single-Core MCU, 50MHz, 256KB FLASH, 64K x 8 RAM, 56 I/O, 108-LFBGA (10x10), -40°C to 85°C, 2.25V-2.75V supply.","salesMarkdown":"## 50 MHz Cortex-M3 with 256 KB flash — what it buys the design The LM3S1937-IBZ50-A2T is a Stellaris ARM Cortex-M3S 1000 series MCU running at 50 MHz — enough throughput for real-time control loops, protocol stacks (I²C, SPI, UART, IrDA, Microwire, SSI), and sensor fusion without an external processor. On-chip memory: 256 KB flash for code and bootloader, plus 64 KB SRAM. 56 general-purpose I/O lines give enough headroom for a keypad, display interface, and a handful of sensor inputs without a port expander. That means it is still available for existing BOM lines, but TI will not support new design-ins — the window for last-time-buy (LTB) orders may open at any time. For a production run already using this MCU, the NRND status means you should evaluate a pin-compatible migration path now. The Stellaris family includes siblings with similar peripheral sets — confirm the exact package and memory match before committing a board spin. ## 108-BGA footprint — board and assembly considerations The 108-BGA (10x10 mm) package demands a 4-layer PCB minimum for fan-out — two-layer boards will not route the inner balls.","metaTitle":"LM3S1937-IBZ50-A2T TI Stellaris ARM Cortex-M3 MCU 50 MHz","metaDescription":"Texas Instruments LM3S1937-IBZ50-A2T ARM Cortex-M3 32-bit MCU, 50 MHz, 256KB Flash, 64KB RAM, 56 I/O, 108-BGA, -40°C to 85°C. NRND — sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","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":"56","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Not For New Designs","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":"108-BGA (10x10)","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-IBZ50-A2T/alternatives.json"},"ai":{"faq":[{"question":"How can I order the LM3S1937-IBZ50-A2T or check availability?","answer":"The LM3S1937-IBZ50-A2T carries an NRND lifecycle status from Texas Instruments. It is sourced to order against your BOM quantity — submit an RFQ for current lead time and pricing. No stock-holding claim; availability confirmed at quote time."},{"question":"Is the LM3S1937-IBZ50-A2T obsolete?","answer":"It is NRND (Not Recommended for New Designs), not yet fully obsolete. TI may issue a last-time-buy notice in the future. For existing production, plan a migration to a current Stellaris or TM4C family part."},{"question":"What is the closest pin-compatible alternative to the LM3S1937-IBZ50-A2T?","answer":"Within the Stellaris ARM Cortex-M3S 1000 series, the LM3S1938 offers the same 108-BGA footprint and peripheral set with additional memory or features — confirm exact memory and temperature grade against your BOM before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1937-IBZ50-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/LM3S1937-IBZ50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}