{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1637-IBZ50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1637-IBZ50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1637-IBZ50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1637-IBZ50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series microcontroller, LM3S1637-IBZ50-A2T, 32-Bit Single-Core, 50MHz, 128KB FLASH, 32K x 8 RAM, 108-LFBGA, Tape & Reel.","salesMarkdown":"## NRND lifecycle — sourcing posture Texas Instruments lists the LM3S1637-IBZ50-A2T as NRND (Not Recommended for New Designs). This means the device is not intended for new product development; existing designs should plan for a last-time-buy or a migration path. For active BOM lines already using this part, we source it through independent distribution channels. ## Core and memory — firmware headroom The ARM Cortex-M3 core runs at 50 MHz, delivering the throughput needed for real-time control loops in motor-drive or sensor-fusion applications. The 128 KB on-chip flash (128K x 8) and 32 KB SRAM (32K x 8) provide enough space for a moderate application stack plus a real-time operating system kernel. Program memory is FLASH type, supporting in-system firmware updates. The 32-bit single-core architecture with a 2.25 V to 2.75 V supply range suits battery-powered or low-voltage backplane designs. The Quadrature Encoder Interface (QEI) is directly useful for closed-loop motor position feedback without external logic. On-chip peripherals include a 4-channel 10-bit ADC, PWM outputs, a watchdog timer, brown-out detect/reset, and POR. ## Package and board integration — 108-ball BGA The device is supplied in a 108-LFBGA package (10x10 mm body, 0.80 mm ball pitch). The 108-BGA (10x10) supplier device package requires a multi-layer PCB for fan-out; the 0.80 mm pitch is within the capability of standard PCB fabrication processes. The tape-and-reel packaging (TR) is suited for automated pick-and-place assembly.","metaTitle":"Texas Instruments LM3S1637-IBZ50-A2T Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S1637-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB flash, 32 KB RAM, 108-BGA. NRND — sourced to order against 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":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"43","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":"LM3S1637","Program Memory Size":"128KB (128K 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":"$16.4174","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/99ee81b12912cebc4bb780a82de7e81e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1637-IBZ50-A2T/alternatives.json"},"ai":{"faq":[{"question":"How can I order the LM3S1637-IBZ50-A2T or check availability?","answer":"The LM3S1637-IBZ50-A2T is NRND and sourced through independent distribution. Submit an RFQ with your target quantity and date-code preference; we confirm availability and current pricing at quote time."},{"question":"What is the closest pin-compatible alternative to the LM3S1637-IBZ50-A2T?","answer":"The Stellaris family includes other Cortex-M3 devices with similar peripheral sets, but pin compatibility and memory sizing must be verified against the specific BOM position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1637-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/LM3S1637-IBZ50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:44:00.781Z","lastPublished":"2026-07-21T02:44:00.781Z","indexable":true}}