{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2533-IBZ50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2533-IBZ50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2533-IBZ50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S2533-IBZ50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 2000 series, LM3S2533-IBZ50-A2T, 32-bit single-core MCU, 50MHz, 96KB Flash, 64KB RAM, 48 I/O, 108-BGA, -40°C to 85°C, NRND.","salesMarkdown":"## What the 50 MHz core and memory budget mean for a control application The LM3S2533-IBZ50-A2T runs an ARM Cortex-M3 core at 50 MHz — enough throughput for a closed-loop PID controller updating at 10 kHz with headroom for the protocol stack and diagnostics. The 96 KB on-chip Flash and 64 KB SRAM leave room for a moderate application image and a real-time data buffer; a CANopen stack with 32 PDO mappings fits within that footprint without external memory. Operating from -40°C to 85°C, this MCU is qualified for unheated enclosures in factory-floor or outdoor cabinet environments. The 2.25 V to 2.75 V supply rail is tighter than the 3.3 V typical for Cortex-M3 parts — the board's regulator must hold within that band across load steps. ## NRND lifecycle — what it means for a BOM line Texas Instruments lists the LM3S2533-IBZ50-A2T as NRND (Not Recommended for New Designs). This is the official lifecycle status — the part is still available for existing production but is not intended for new board spins. No pin-compatible successor is recorded in the official documentation; a migration to a current Stellaris or Tiva-C series part would require a package and peripheral audit. For a sustaining BOM, the NRND flag means the supply window is finite. Sourcing through independent distribution channels is the practical path — availability is confirmed per RFQ, and the reel quantity (Tape & Reel packaging) is typical for this class. No last-time-buy date is published, so the procurement trigger is the next scheduled BOM review. ## 108-BGA package — layout and rework notes The 108-ball BGA (10x10 mm body) has a 0.80 mm ball pitch — a 4-layer PCB with via-in-pad or microvias is the standard fan-out. The supplier device package is 108-BGA (10x10), so the footprint matches the JEDEC MO-216 standard for this ball count. The 48 GPIOs are distributed across the BGA perimeter — the pin map is in the TI datasheet. Brown-out detect, POR, PWM, and WDT are integrated peripherals, so the only external components needed are the decoupling caps and the supply regulator. The internal oscillator eliminates the external crystal for applications that can tolerate ±2% accuracy over temperature.","metaTitle":"Texas Instruments LM3S2533-IBZ50-A2T ARM Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S2533-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz, 96KB Flash, 64KB RAM, 48 I/O, 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 2000","Package":"Tape & Reel (TR)","RAM Size":"64K 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":"48","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Not For New Designs","Data Converters":"A/D 3x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2533","Program Memory Size":"96KB (96K 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":"$15.8307","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/38b03106a267df1019dd902dd40d5344.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2533-IBZ50-A2T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S2533-IBZ50-A2T?","answer":"No official pin-compatible successor is recorded in the Texas Instruments documentation. A migration to a current Stellaris or Tiva-C series MCU would require a package and peripheral audit — the 108-BGA footprint is not shared across the current portfolio."},{"question":"What compliance documentation does Texas Instruments provide for LM3S2533-IBZ50-A2T?","answer":"Texas Instruments provides RoHS and REACH compliance data for this part number. The standard TI material declaration and conflict minerals report are available through their documentation portal. No UL or IEC certification is listed in the spec record for this MCU."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2533-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/LM3S2533-IBZ50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:51:04.658Z","lastPublished":"2026-07-21T02:51:04.658Z","indexable":true}}