{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2533-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2533-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2533-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S2533-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 2000 series microcontroller, LM3S2533-EQC50-A2, 32-bit single-core, 50MHz, 96KB Flash, 64KB SRAM, 100-LQFP.","salesMarkdown":"## What the 50 MHz Cortex-M3 core means for your control loop The LM3S2533-EQC50-A2 runs a 32-bit ARM Cortex-M3 core at 50 MHz — this is the processing ceiling for your interrupt service routine and main loop combined. For a motor-control loop reading a 10-bit ADC, running a PI controller, and updating a PWM duty cycle, 50 MHz gives you roughly 500 instructions per microsecond of loop time, which is enough headroom for a 10 kHz current loop with margin left for communications overhead. The 96 KB of on-chip flash holds the firmware image; 64 KB of SRAM buffers real-time data, communication stacks, and intermediate calculations. That 64 KB SRAM is enough for a CANopen stack plus a few hundred sensor readings before you need to flush to external storage. ## Connectivity and I/O — what interfaces are on the pins This MCU brings out CANbus, I2C, SPI, SSI, UART/USART, and Microwire — a broad enough set to talk to industrial sensors, motor drives, and HMI panels without external protocol converters. The 48 GPIOs map to the 100-pin LQFP package; about 30 of those are usable after the dedicated peripheral pins are allocated. Three 10-bit ADC channels sample analog signals like potentiometer feedback or current-sense amplifier outputs. The internal oscillator means you can bring up a UART bootloader without an external crystal, though the internal RC accuracy (±1% typical) limits precision timing applications. ## Temperature range and supply — where it lives on the board The 100-LQFP package with a 14x14 mm body is a hand-solderable fine-pitch package (0.5 mm pitch). Standard PCB assembly lines handle it without issue; rework with hot air is straightforward if you preheat the board to 100°C. ## Lifecycle reality — why this part is a sourcing special Sourcing this part today means going through independent distribution channels that hold new-old-stock or surplus inventory. Each lot is traceable and tested; quantities are confirmed at RFQ time. If you are supporting a legacy production line, buy enough for the remaining build — there will be no last-time-buy window from the factory.","metaTitle":"Texas Instruments LM3S2533-EQC50-A2 Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S2533-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 96KB Flash, 64KB SRAM, 100-LQFP. Obsolete — 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 2000","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, I2C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"48","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","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 ~ 105°C (TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/41400bc3a67408a744b45d22f819fb9a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2533-EQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for LM3S2533-EQC50-A2?","answer":"Submit an RFQ through this listing. No stock-holding claim is made here; each lot is lot-traceable and tested."},{"question":"What is the closest alternative to LM3S2533-EQC50-A2 in the Stellaris family?","answer":"There is no pin-compatible drop-in replacement from Texas Instruments for this exact order code. The Tiva-C TM4C123 series is the functional successor but uses a different pinout and supply voltage (3.3 V). A board spin is required to migrate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2533-EQC50-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/LM3S2533-EQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:50:38.585Z","lastPublished":"2026-07-21T02:50:38.585Z","indexable":true}}