{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5749-IQC50","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5749-IQC50","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5749-IQC50","factsUrl":"https://icboms.com/api/mcp/products/LM3S5749-IQC50","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3S5749-IQC50, Stellaris ARM Cortex-M3S 100 series, 32-bit ARM Cortex-M3 MCU at 50 MHz, 128KB Flash, 64KB SRAM, USB/CAN/I2C/SPI/UART, 100-LQFP, -40 to 85°C, 2.25-2.5V.","salesMarkdown":"## 50 MHz ARM Cortex-M3 with USB and CAN on a 100-LQFP ## Memory headroom and peripheral fit The Flash is sized for a moderate firmware image — think a CANopen stack plus a USB CDC class driver and a few application tasks — while the 64 KB SRAM gives enough buffer space for packet handling without tight manual memory management. The 61 GPIOs in the 100-LQFP leave room for a parallel LCD or a keypad matrix alongside the serial interfaces. The connectivity list includes USB, CAN, I²C, SPI, SSI, and UART. The core and I/O operate from a 2.25 V to 2.5 V supply. The internal oscillator keeps the clock running without an external crystal.","metaTitle":"TI LM3S5749-IQC50 Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S5749-IQC50 Stellaris ARM Cortex-M3 MCU, 32-bit at 50 MHz, 128KB Flash, 64KB SRAM, USB, CAN, 100-LQFP, -40 to 85°C. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 100","Package":"Bulk","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"61","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Active","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5749","Program Memory Size":"128KB (128K 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 ~ 2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f76abf1fdb1b855dc4eda2eff2aed996.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5749-IQC50/alternatives.json"},"ai":{"faq":[{"question":"Does LM3S5749-IQC50 have USB and CAN interfaces?","answer":"Yes. The connectivity block includes CANbus, USB, I²C, IrDA, Microwire, QEI, SPI, SSI, and UART/USART."},{"question":"What is the closest pin-compatible alternative to LM3S5749-IQC50?","answer":"Pin-compatible alternatives exist within the Stellaris ARM Cortex-M3S 100 series, sharing the same 100-LQFP footprint and supply voltage. The deciding factor between variants is typically the Flash and SRAM density — this part sits at 128 KB Flash / 64 KB SRAM, while higher-density siblings offer up to 256 KB Flash. Review the memory and peripheral set of the target alternative before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5749-IQC50","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5749-IQC50 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}