{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6633-IQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6633-IQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6633-IQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S6633-IQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 6000 series LM3S6633-IQC50-A2, 32-bit ARM Cortex-M3 at 50MHz, 128KB Flash, 32KB SRAM, Ethernet MAC, 41 GPIO, 100-LQFP (14x14mm), -40°C to 85°C, 2.25–2.75V supply.","salesMarkdown":"## 50 MHz Cortex-M3 with on-chip Ethernet MAC The LM3S6633-IQC50-A2: Its standout feature is an integrated Ethernet MAC, making it a single-chip solution for industrial gateways, protocol converters, and networked controllers that need a compact BOM without an external PHY interface chip. The 41 GPIOs and peripheral set — including I²C, SPI, UART, and PWM — cover the usual sensor and actuator interface needs in factory automation and building control panels. Any new design should avoid this MCU unless it is a legacy-support or repair-only situation. ## 100-LQFP rework considerations The exposed paddle is absent on this package, so the thermal mass is moderate — a 260°C peak reflow profile per J-STD-020 works, but the part is MSL 3 out of the bag; if the moisture-barrier bag has been open longer than the floor-life window, bake it at 125°C for 24 hours before rework to avoid popcorning. ## Ethernet MAC integration — what it buys The integrated Ethernet MAC with MII/RMII interface lets you connect an external PHY (e.g., a DP83848 or LAN8720) for 10/100 Mbps networking. This saves a separate MAC chip and keeps the board area tight for a two-layer PCB in a control panel. The 50 MHz core has enough headroom to run a lightweight TCP/IP stack (like lwIP) alongside the application code in the 128 KB Flash — budget about 40 KB for the stack, leaving 88 KB for the control logic.","metaTitle":"TI LM3S6633-IQC50-A2 ARM Cortex-M3 MCU, 50MHz, 128KB Flash","metaDescription":"Texas Instruments Stellaris LM3S6633-IQC50-A2 32-bit ARM Cortex-M3 MCU at 50MHz with 128KB Flash, 32KB SRAM, Ethernet MAC.","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 6000","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"41","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":"LM3S6633","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 ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.1800","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S6633-IQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"Can LM3S6633-IQC50-A2 be used for Ethernet applications?","answer":"Yes, it integrates an Ethernet MAC with MII/RMII interface, so it can connect to an external PHY for 10/100 Mbps networking. This makes it suitable for industrial gateways, protocol converters, and any application needing a compact networked controller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6633-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/LM3S6633-IQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}