{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1439-IQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1439-IQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1439-IQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1439-IQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1439-IQC50-A2T microcontroller, 32-bit single-core Cortex-M3, 50MHz, 96KB Flash, 32K x 8 RAM, 52 I/O, 100-LQFP package, -40°C to 85°C.","salesMarkdown":"## 50 MHz Cortex-M3 with 96 KB flash — what the memory and I/O mean for the BOM The LM3S1439-IQC50-A2T: The 96 KB on-chip flash and 32K x 8 SRAM give enough headroom for a modest control stack and a few hundred lines of application code — think motor commutation loops or sensor fusion algorithms that fit in a single flash sector. With 52 general-purpose I/O lines and connectivity including I²C, SPI, SSI, UART/USART, and IrDA, this part can talk to a range of peripherals without external level shifters or protocol bridges. The 4-channel 10-bit ADC covers basic analog sensing — enough for current feedback or temperature monitoring on a single-phase motor drive. The 100-LQFP package (14x14 mm) with 0.5 mm pitch demands a 4-layer PCB for reliable fan-out; two-layer boards will struggle to route all 52 I/O without via congestion. ## NRND — what the lifecycle means for procurement The 100-LQFP footprint and 2.5 V supply rail narrow the field of drop-in alternatives — a cross-reference search should start with other Stellaris LM3S parts in the same package and voltage grade. ## Temperature grade and peripheral set — deployment context The brown-out detect and POR circuits ensure clean startup on a 2.5 V rail that may ramp slowly in a battery-backed system. The peripheral set includes a PWM module and a quadrature encoder interface (QEI) — these map directly to brushless DC motor control with Hall-sensor or encoder feedback. The watchdog timer (WDT) provides a safety net for unattended operation, and the internal oscillator eliminates the crystal BOM line for cost-sensitive builds.","metaTitle":"TI LM3S1439-IQC50-A2T Cortex-M3 MCU, 50MHz, 96KB Flash","metaDescription":"Texas Instruments LM3S1439-IQC50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz, 96KB Flash, 32K x 8 RAM, 52 I/O, -40 to 85°C, 100-LQFP.","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":"52","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1439","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":"$17.8994","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/84642662439782fc7db173508ac8502c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1439-IQC50-A2T/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1439-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/LM3S1439-IQC50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:41:57.369Z","lastPublished":"2026-07-21T02:41:57.369Z","indexable":true}}