{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1751-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1751-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1751-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1751-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series MCU, LM3S1751-IBZ50-A2, 32-bit single-core at 50 MHz, 128 KB Flash, 64 KB RAM, 56 I/O, 108-LFBGA, -40°C to 85°C.","salesMarkdown":"That is enough throughput for a 4-axis stepper controller or a 10 kHz current loop, but not for video or high-speed data acquisition. ## Memory sizing — Flash and RAM for the BOM 128 KB of Flash holds a moderate firmware image — a FreeRTOS kernel plus a Modbus stack and some application logic fits. The 64 KB of RAM (organized as 64K x 8) gives room for a few hundred bytes of DMA buffers and a modest heap. If the application needs a full TCP/IP stack with large packet buffers, this part will run out of RAM; it is sized for control logic and sensor fusion, not for a web server. ## Lifecycle — obsolete, sourced from surplus This part is officially obsolete per the manufacturer. There is no listed successor or second-source alternate in the evidence. The four 10-bit ADC channels handle analog feedback from potentiometers or current shunts. The PWM and WDT are standard for motor drive and safety watchdog applications. ## Package — BGA reflow, not field-swappable The 108-ball BGA (10x10 mm) is a fine-pitch surface-mount package. This is not a part you swap in the field with a soldering iron — it needs a reflow oven and X-ray inspection. For a field-service technician, the takeaway is: if this chip fails, the whole board comes out. Keep a spare board in the kit, not a loose IC.","metaTitle":"LM3S1751-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash","metaDescription":"Obsolete LM3S1751-IBZ50-A2 ARM Cortex-M3 MCU from TI Stellaris series. 50 MHz core, 128 KB Flash, 64 KB RAM, 56 I/O, industrial temp. Sourced to order against RFQ.","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 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":"Obsolete","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1751","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":"$17.6171","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8d259102b4710400d95dede9403b7b03.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1751-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LM3S1751-IBZ50-A2 and how do I get a price?","answer":"We source this obsolete MCU to order against an RFQ through our independent distribution network. Submit a request for quote (RFQ) and we will confirm current availability and pricing — no stock figures or lead-time numbers are published here because each procurement is handled individually."},{"question":"What is LM3S1751-IBZ50-A2's listed speed (50 MHz) on this component line?","answer":"The core runs at 50 MHz, which is the maximum clock frequency for this Cortex-M3 device. That speed is sufficient for most industrial control loops and serial communication tasks, but not for high-bandwidth data processing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1751-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/LM3S1751-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}}