{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1538-IQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1538-IQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1538-IQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1538-IQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series microcontroller, LM3S1538-IQC50-A2T, 50MHz, 96KB Flash, 64KB RAM, 100-LQFP, -40°C to 85°C.","salesMarkdown":"## Cortex-M3 at 50 MHz — 100-LQFP package The Texas Instruments LM3S1538-IQC50-A2T is a Stellaris ARM Cortex-M3S 1000 series microcontroller built around a 32-bit ARM Cortex-M3 core running at 50 MHz. It carries 96 KB of on-chip Flash program memory and 64 KB of SRAM — enough headroom for a modest RTOS and application stack without external memory. Housed in a 100-LQFP package (14x14 mm body), the part exposes 43 GPIOs and a peripheral set that includes I²C, SPI, SSI, UART/USART, IrDA, Microwire, and a Quadrature Encoder Interface (QEI) for motor-feedback applications. Texas Instruments lists the LM3S1538-IQC50-A2T as NRND (Not Recommended for New Designs). The part remains available for existing production runs, but TI advises against using it in new product development. For an existing BOM line that already carries this order code, the NRND status means the supply window is finite — plan a last-time-buy strategy or qualify a replacement before TI issues an end-of-life notice. Sourced through independent distribution channels; availability and current pricing confirmed at RFQ. ## Industrial temperature grade and supply rails On-chip peripherals include a brown-out detect/reset, POR, PWM outputs, and a watchdog timer — enough supervisory logic to run a safety-critical control loop without an external supervisor IC. An internal oscillator keeps the core clocked without a crystal, though the internal accuracy limits precision timing to the datasheet's specified tolerance. ## ADC and connectivity for sensor fusion An 8-channel 10-bit ADC captures analog sensor inputs — thermocouple, pressure transducer, or current-sense amplifier outputs — without an external converter. The QEI peripheral decodes incremental encoder pulses directly, saving a timer channel for other duties. The exposed pad is on the bottom; verify the solder-paste stencil aperture matches the datasheet land pattern to avoid voids under the die.","metaTitle":"TI LM3S1538-IQC50-A2T ARM Cortex-M3 MCU, 50MHz, 96KB Flash","metaDescription":"Texas Instruments LM3S1538-IQC50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz, 96KB Flash, 64KB RAM, 100-LQFP. NRND status — available to order. Request a quote.","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":"64K 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":"100-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1538","Program Memory Size":"96KB (96K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.5141","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1538-IQC50-A2T/alternatives.json"},"ai":{"faq":[{"question":"How can I order the LM3S1538-IQC50-A2T or check current availability?","answer":"The LM3S1538-IQC50-A2T is NRND but remains orderable through independent distribution channels."},{"question":"What is the LM3S1538-IQC50-A2T's core speed and memory?","answer":"The ARM Cortex-M3 core runs at 50 MHz. On-chip memory is 96 KB of Flash and 64 KB of SRAM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1538-IQC50-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/LM3S1538-IQC50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:42:23.589Z","lastPublished":"2026-07-21T02:42:23.589Z","indexable":true}}