{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2139-IBZ25-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2139-IBZ25-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2139-IBZ25-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S2139-IBZ25-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 2000 series MCU, LM3S2139-IBZ25-A2T, 32-bit single-core, 25MHz, 64KB Flash, 16KB SRAM, 56 I/O, 108-LFBGA (10x10mm), -40 to 85°C, NRND.","salesMarkdown":"## What the 25 MHz core and memory mean for fit The LM3S2139-IBZ25-A2T: The 25 MHz clock rate and Cortex-M3 pipeline deliver roughly 0.9 DMIPS/MHz, so the effective throughput is about 22 DMIPS — adequate for control-loop tasks like motor commutation, CAN message handling, or sensor fusion where the peripheral set does the heavy lifting. 64 KB of program Flash and 16 KB of SRAM leave room for a modest RTOS kernel plus application code; the 56 GPIO lines (in the 108-BGA) allow parallel interfaces or a large matrix of discrete I/O without an external expander. ## Connectivity and peripheral set On-chip connectivity includes CANbus, I²C, SPI, SSI, UART/USART, IrDA, and Microwire — enough to bridge a CAN-based machine network to a local sensor bus or a UART debug console without external protocol chips. A 4-channel 10-bit ADC, PWM outputs, and a watchdog timer round out the analog and timing resources for closed-loop control. ## NRND lifecycle — what it means for procurement Texas Instruments lists this device as NRND (Not Recommended for New Designs). The part is still orderable for existing production but is not intended for new projects — any new BOM should target a current-generation Stellaris or TM4C substitute. The 108-ball BGA (10x10 mm) with 0.80 mm ball pitch requires a 4-layer PCB for fan-out — the inner rows need at least two signal layers to route cleanly.","metaTitle":"TI LM3S2139-IBZ25-A2T ARM Cortex-M3 MCU, 25MHz, 64KB Flash","metaDescription":"Texas Instruments LM3S2139-IBZ25-A2T Stellaris ARM Cortex-M3 MCU, 25MHz, 64KB Flash, 16KB SRAM, 56 I/O, CAN/SPI/UART, 108-BGA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"25MHz","Series":"Stellaris® ARM® Cortex®-M3S 2000","Package":"Tape & Reel (TR)","RAM Size":"16K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, 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":"LM3S2139","Program Memory Size":"64KB (64K 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":"$19.7917","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0bdca6fb8c74959e2a2eb390922eeed9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2139-IBZ25-A2T/alternatives.json"},"ai":{"faq":[{"question":"How can I get current pricing and availability for LM3S2139-IBZ25-A2T?","answer":"Submit an RFQ through this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2139-IBZ25-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/LM3S2139-IBZ25-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:50:14.902Z","lastPublished":"2026-07-21T02:50:14.902Z","indexable":true}}