{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1439-IQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1439-IQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1439-IQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1439-IQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 MCU, LM3S1439-IQC50-A2, 32-Bit Single-Core 50MHz, 96KB Flash, 32K x 8 RAM, 100-LQFP, -40°C~85°C.","salesMarkdown":"Texas Instruments has marked the LM3S1439-IQC50-A2 as Obsolete. ## Core and memory profile Built around the ARM Cortex-M3 core, the LM3S1439 runs at 50 MHz — a throughput sweet spot for control-loop and sensor-fusion tasks that don't need the overhead of a Cortex-M4 FPU. On-chip memory consists of 96 KB of Flash and 32K x 8 of SRAM. The Flash is sufficient for a moderate application stack plus a bootloader; the SRAM leaves room for a real-time OS heap and data buffers without external memory. ## I/O, connectivity, and on-chip peripherals 52 general-purpose I/O lines provide enough pinout for a keypad, display interface, and several sensor inputs without a port expander. Connectivity options include I²C, IrDA, Microwire, QEI, SPI, SSI, and UART/USART — covering common serial buses for industrial sensors, motor encoders, and human-machine interfaces. On-chip peripherals include a brown-out detect/reset, POR, PWM, and watchdog timer. A 4-channel 10-bit ADC handles analog inputs like potentiometers or temperature sensors without an external converter. ## Package and temperature grade Housed in a 100-LQFP package with a 14x14 mm body, the device is suited for surface-mount assembly on standard FR-4 boards. The 0.5 mm pitch requires a controlled solder-paste stencil and a reflow profile typical for LQFP packages. ## Supply voltage and system integration The core and I/O operate from a single 2.25 V to 2.75 V supply. This narrow range simplifies the power rail design — a single 2.5 V LDO or a buck converter set to 2.5 V is sufficient, avoiding multiple regulators.","metaTitle":"LM3S1439-IQC50-A2 Texas Instruments ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S1439-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 96KB Flash, 32K x 8 RAM, 52 I/O, -40~85°C, 100-LQFP.","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":"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":"Active","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","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$31.9473","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/84642662439782fc7db173508ac8502c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1439-IQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for LM3S1439-IQC50-A2?","answer":"Submit an RFQ through this listing."},{"question":"What is the closest pin-compatible alternative to LM3S1439-IQC50-A2 in this family?","answer":"The Stellaris family includes other Cortex-M3 parts in the same 100-LQFP package, but pin compatibility varies by peripheral set and memory size — a board-level review of the target part's datasheet is required before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1439-IQC50-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/LM3S1439-IQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:41:51.451Z","lastPublished":"2026-07-21T02:41:51.451Z","indexable":true}}