{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2739-EQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2739-EQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2739-EQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S2739-EQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 2000 series LM3S2739-EQC50-A2T, 32-bit ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash, 64K x 8 RAM, CANbus, I²C, SPI, UART, 56 I/O, 100-LQFP, -40°C to 105°C.","salesMarkdown":"## Obsolete — sourcing strategy for the LM3S2739-EQC50-A2T For existing BOM lines, the supply channel is limited to independent distribution and surplus inventory. ## 50 MHz ARM Cortex-M3 — what the core speed means for your application This is a mid-range speed tier for the Cortex-M3 architecture — enough for real-time control loops, CAN gateway processing, and sensor fusion, but not for high-rate DSP or video. The 50 MHz core, combined with the single-cycle multiply and hardware divide of the M3, gives deterministic interrupt latency suitable for motor drive and industrial automation applications where the 56 available I/O lines and rich serial connectivity are the primary draw. Program memory is 128 KB of on-chip Flash, and the SRAM is 64 KB organized as 64K x 8. The 64 KB RAM provides reasonable headroom for data buffers, communication stacks, and local variables. If your firmware image exceeds 128 KB, this part will not fit without external memory, which the part does not have a dedicated external bus interface for. The 105°C upper limit suits motor drive cabinets, outdoor telecom enclosures, and factory-floor automation where ambient temperatures can exceed 85°C. This is a critical BOM detail: the board must have a dedicated 2.5 V supply, or you need a regulator. The peripheral set includes CANbus, I²C, IrDA, Microwire, QEI, SPI, SSI, and UART/USART interfaces. The CAN controller is a key differentiator for industrial and automotive networking — this part can act as a CAN node without an external controller. The QEI (quadrature encoder interface) is purpose-built for motor position feedback from incremental encoders. The 4-channel 10-bit ADC provides basic analog measurement capability. ## Package and footprint — 100-LQFP The LM3S2739-EQC50-A2T is supplied in a 100-LQFP package (14x14 mm body). This is a common fine-pitch QFP that requires careful PCB layout for the 56 I/O lines and supply pins.","metaTitle":"LM3S2739-EQC50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"LM3S2739-EQC50-A2T is an obsolete Stellaris ARM Cortex-M3 MCU from TI. 50 MHz core, 128 KB Flash, 64 KB RAM, CAN and multiple serial interfaces, -40°C 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":"Tape & Reel (TR)","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, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"56","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2739","Program Memory Size":"128KB (128K 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/e578ba8ea9aa738439f0d34e3213a748.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2739-EQC50-A2T/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S2739-EQC50-A2T?","answer":"Texas Instruments has not published an official direct replacement order code for this specific variant. For new designs, consider current-generation TI ARM Cortex-M4F devices in the Tiva C Series, which offer pin-compatible options in the same 100-LQFP package, though you must verify pin compatibility, supply voltage, and software migration against the respective datasheets."},{"question":"What is the difference between LM3S2739-EQC50-A2T and LM3S2739-IQC50-A2T?","answer":"The difference is the temperature grade suffix. All other specifications — 50 MHz core, 128 KB Flash, 64 KB RAM, 100-LQFP package, peripheral set — are identical between the two variants."},{"question":"Where can I buy LM3S2739-EQC50-A2T?","answer":"Submit an RFQ for a real-time supply check."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2739-EQC50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S2739-EQC50-A2T 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}}