{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6C11-IQC80-A1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6C11-IQC80-A1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6C11-IQC80-A1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S6C11-IQC80-A1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 6000 series LM3S6C11-IQC80-A1T, 32-bit single-core MCU at 80MHz, 512KB flash, 64KB SRAM, Ethernet MAC, I2C/SPI/SSI/UART, 46 I/O, 100-LQFP (14x14mm), -40 to 85°C, 3.3V supply, tape-and-reel.","salesMarkdown":"## What the Stellaris LM3S6C11 brings to a control-plus-connectivity design It integrates an Ethernet MAC controller alongside a full suite of serial interfaces — I2C, SPI, SSI, UART, IrDA, LIN, and Microwire — making it a single-chip node for industrial automation, building control, or IoT gateway designs that need a network stack without an external PHY-management processor. The 80 MHz core is fast enough to run a lightweight TCP/IP stack (lwIP or similar) and handle Modbus TCP or EtherNet/IP polling without a separate network coprocessor. The on-chip Ethernet MAC eliminates the cost of an external controller IC and its associated glue logic — just add an external PHY chip and magnetics. The 512 KB flash leaves headroom for a bootloader, application firmware, and a small file system; the 64 KB SRAM is adequate for packet buffers and a modest RTOS heap. If your design needs more RAM for large data logs or a full web server, the LM3S6C11 sits at the lower end of the Stellaris Ethernet family — higher-density siblings double the SRAM. ## Package and supply rails — layout notes The LM3S6C11 comes in a 100-LQFP with a 14x14 mm body and 0.5 mm pitch — a hand-solderable fine-pitch QFP that routes easily on a two-layer board if you keep the trace lengths short. Supply voltage is 3.0 V to 3.6 V nominal, so a single 3.3 V rail powers the core and I/O. The internal oscillator can serve as the system clock, but for Ethernet operation an external 25 MHz crystal is typical to feed the MAC's PLL. The 46 I/O are 5 V tolerant on most pins, which simplifies level translation when interfacing to legacy 5 V peripherals.","metaTitle":"Texas Instruments LM3S6C11-IQC80-A1T ARM Cortex-M3 MCU","metaDescription":"Texas Instruments Stellaris LM3S6C11-IQC80-A1T: 32-bit ARM Cortex-M3 at 80MHz, 512KB flash, 64KB SRAM, Ethernet MAC, 46 I/O, -40 to 85°C, 100-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"80MHz","title":"LM3S6C11-IQC80-A1T","Series":"Stellaris® ARM® Cortex®-M3S 6000","Package":"Tape & Reel (TR)","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"Ethernet, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"46","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S6C11","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4e06553a96706e26149eaf5b023f6598.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between the LM3S6C11 and the LM3S6C10?","answer":"The LM3S6C11 and LM3S6C10 are pin-compatible siblings in the Stellaris 6000 family. The primary difference is flash memory size: the LM3S6C11 has 512 KB, while the LM3S6C10 has 256 KB. Both share the same 80 MHz Cortex-M3 core, 64 KB SRAM, Ethernet MAC, and peripheral set."},{"question":"Can the LM3S6C11 be used with an external Ethernet PHY?","answer":"Yes. The LM3S6C11 integrates an Ethernet MAC that connects to an external PHY chip via a standard MII or RMII interface. The PHY selection determines the physical layer (10/100Base-T, fiber, etc.) and is not included on-chip."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6C11-IQC80-A1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S6C11-IQC80-A1T 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}}