{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1937-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1937-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1937-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1937-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series, LM3S1937-IBZ50-A2, 32-bit single-core MCU at 50 MHz, 256 KB Flash, 64 KB SRAM, 108-LFBGA tray, -40 to 85 °C, 2.25–2.75 V supply.","salesMarkdown":"The official lifecycle status means the last-time-buy window is either open or closing — any BOM that depends on this exact order code should have a migration plan in place. The 50 MHz core delivers enough throughput for motor-control loops, sensor fusion, and industrial protocol stacks (I²C, SPI, UART, IrDA, Microwire, SSI are all on-chip). The 256 KB Flash is sized for moderate firmware images — think bootloader plus application code with room for OTA staging if you compress. The 64 KB SRAM handles double-buffered ADC data or a modest RTOS heap without external memory. ## Industrial temperature range and BGA package The 108-LFBGA package (10x10 mm body) requires a multi-layer PCB with microvias or blind vias for fanout — not a two-layer board part. Supply voltage is 2.25 to 2.75 V, so a 2.5 V rail is the natural fit; a 3.3 V system needs a regulator. ## Peripherals and I/O count The 4-channel 10-bit ADC covers basic analog sensing — thermistor, potentiometer, current shunt — but for higher-resolution measurements an external ADC is needed.","metaTitle":"LM3S1937-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S1937-IBZ50-A2 32-bit ARM Cortex-M3 MCU at 50 MHz, 256 KB Flash, 64 KB SRAM, 108-BGA, -40 to 85 °C.","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":"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":"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":"$19.4986","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1410109faa94f8575689d533cdece4b5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1937-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S1937-IBZ50-A2 obsolete?","answer":"It is not yet fully discontinued, but TI will not support new design-ins. Existing production can continue through the last-time-buy window; after that, supply moves to independent distribution."},{"question":"What is the replacement for LM3S1937-IBZ50-A2?","answer":"TI does not list a direct pin-compatible successor for the LM3S1937-IBZ50-A2 in the Stellaris family. For new designs, consider migrating to a current TI ARM Cortex-M4 or Cortex-M0+ MCU with similar Flash and SRAM density — the TM4C or MSP432 series are common cross-shop candidates, but they are not drop-in replacements. Verify package, supply voltage, and peripheral set against your BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1937-IBZ50-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-IBZ50-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}}