{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2911-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2911-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2911-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S2911-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 series LM3S2911-EQC50-A2, 32-Bit Single-Core MCU, 50MHz, 256KB Flash, 64K x 8 SRAM, 60 I/O, CANbus/I²C/SPI/UART, 100-LQFP, -40°C~105°C.","salesMarkdown":"## What this Stellaris MCU brings to a control board It runs at 50 MHz from a single-core Cortex-M3 processor, with 256 KB of program Flash and 64 KB of SRAM — enough headroom for a modest RTOS, a CANopen stack, and a few PID loops without external memory. The 50 MHz clock rate on this Cortex-M3 delivers around 1.25 DMIPS/MHz, so roughly 62.5 DMIPS peak. That is enough to run a field-oriented control (FOC) commutation loop for a single PMSM motor at 10–20 kHz PWM update rate, or to service a CAN message every 100 µs while keeping the UART logging and GPIO toggling alive. The 64 KB SRAM means you are not going to run a heavy GUI or a large data logger, but it holds a couple of 1 KB CAN buffers, a 4 KB RTOS heap, and a 16 KB stack partition without thrashing. The 256 KB Flash fits a FreeRTOS image plus a moderate application binary — leave room for a bootloader and a fallback image if you plan OTA updates. ## Peripheral set — CAN, UART, SPI, and the rest The LM3S2911 integrates a CANbus controller, multiple UART/USART channels, I²C, SPI, SSI, Microwire, and IrDA — a broad enough serial complement to bridge a CAN-based machine network to a local RS-485 or RS-232 debug port, or to talk to an external ADC/DAC over SPI while logging to a serial console. The 60 GPIO lines give you room for a parallel LCD interface, a keypad matrix, and a handful of status LEDs without a port expander. For an existing BOM that already qualifies this MCU, the only sourcing path is the independent distribution market: broker inventory, surplus stock, or customer returns that have been tested and verified. ## Package and footprint — what the 100-LQFP needs The 100-LQFP (14x14 mm) is a standard fine-pitch QFP with 0.5 mm lead pitch. It is a hand-solderable package for rework — a decent hot-air station with a fine nozzle and some flux can remove and replace it without a preheater, though the 100-pin count means careful alignment. The exposed thermal pad on the underside (if present on this variant — confirm from the mechanical drawing) should be stitched to a ground-plane copper pour with at least nine thermal vias if you plan to run the core above 60°C ambient at full clock. Decouple with a 10 µF ceramic bulk plus a 100 nF per VDD pair, placed within 3 mm of the pin.","metaTitle":"LM3S2911-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"LM3S2911-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz core, 256KB Flash, 64KB SRAM, CAN/UART, -40 to 105°C.","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 2000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"60","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2911","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/24635068039c6dd6f6c46bde82b81374.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2911-EQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LM3S2911-EQC50-A2 available via RFQ confirmation?","answer":"The LM3S2911-EQC50-A2 is obsolete and not available through the original factory channel. Submit an RFQ through this page for a real-time sourcing check."},{"question":"Is LM3S2911-EQC50-A2 obsolete and what is the replacement?","answer":"Yes, the LM3S2911-EQC50-A2 is listed as Obsolete by Texas Instruments. No official replacement part number has been published by the manufacturer for this specific variant. For an existing design, the only sourcing option is the surplus/broker market. For a new design, consider current-production Cortex-M3 or Cortex-M4 MCUs from TI, STMicroelectronics, or NXP that offer similar peripheral sets and memory sizing."},{"question":"Does LM3S2911-EQC50-A2 have CAN and UART interfaces?","answer":"Yes, the LM3S2911 includes a CANbus controller and multiple UART/USART channels, along with I²C, SPI, SSI, Microwire, and IrDA interfaces. This makes it well-suited for bridging a CAN-based machine network to serial debug or sensor buses."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2911-EQC50-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/LM3S2911-EQC50-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}}