{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S8938-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S8938-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S8938-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S8938-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 8000 series LM3S8938-IBZ50-A2, 32-Bit Single-Core MCU, 50MHz, 256KB Flash, 64K x 8 SRAM, 108-LFBGA, -40°C~85°C.","salesMarkdown":"## What this Stellaris MCU brings to a design The LM3S8938-IBZ50-A2: The 8-channel 10-bit ADC covers analog inputs like temperature or pressure transducers without an external converter. The 108-BGA (10x10 mm) package keeps the board area tight — 38 I/Os are brought out, enough for a modest control panel or a motor-drive interface with a few discrete signals left over. ## Obsolete — sourcing strategy for sustainment programs The LM3S8938-IBZ50-A2 carries an official Obsolete lifecycle status. Texas Instruments has ended production, and no last-time-buy window remains open through the factory channel. Because this part is obsolete, every procurement lot should be inspected and tested before assembly. Counterfeit risk rises for high-value legacy MCUs in BGA packages. We source each unit against a customer RFQ, confirm the date code and traceability, and quote current market pricing at the time of request — no blanket stock level applies when the factory gate is closed. ## Package and power — what the BGA footprint demands The 108-ball BGA on a 10x10 mm array (0.8 mm pitch typical for this class) requires a multi-layer PCB with microvia or at least a via-in-pad strategy for the center balls. Decoupling should follow the Stellaris layout guide: one 100 nF per supply ball pair, plus a bulk 10 µF near the BGA corner. Brown-out detect and POR are integrated, so an external supervisor IC is optional unless the system needs a manual reset button or a watchdog timeout longer than the internal WDT period.","metaTitle":"LM3S8938-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"LM3S8938-IBZ50-A2 is a 32-bit ARM Cortex-M3 MCU from the Stellaris 8000 series. 50MHz core, 256KB Flash, 64KB SRAM, CAN/Ethernet, 108-BGA.","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 8000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"38","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S8938","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":"$33.9700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/12dc9f2c7afbe52d000502ce433673bf.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S8938-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S8938-IBZ50-A2?","answer":"Texas Instruments has not published a direct pin-compatible replacement for the LM3S8938-IBZ50-A2 under the Stellaris or Tiva C series that maintains the same 108-BGA footprint and peripheral set. For new designs, the TM4C129x family (Tiva C Series) offers a newer Cortex-M4F core with Ethernet and CAN, but in a different package (256-BGA or 128-TQFP) requiring a board respin. For legacy board repair, the only option is sourcing the original LM3S8938-IBZ50-A2 through the surplus channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S8938-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/LM3S8938-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}}