{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1626-IQR50-A0T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1626-IQR50-A0T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1626-IQR50-A0T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1626-IQR50-A0T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series microcontroller, LM3S1626-IQR50-A0T, 50 MHz, 128 KB flash, 32 KB SRAM, 64-LQFP, -40 to +85 °C.","salesMarkdown":"The LM3S1626-IQR50-A0T runs a single ARM Cortex-M3 core at 50 MHz — the throughput ceiling for control-loop tasks like motor commutation, sensor fusion, or protocol bridging sits at roughly 62.5 MIPS assuming one instruction per cycle on the Thumb-2 ISA. On-chip memory is 128 KB of flash for firmware and 32 KB of SRAM for data buffers and stack — enough for a Modbus RTU gateway handling a few dozen holding registers, or a brushless DC motor controller with a 1 kHz current loop and a UART telemetry stream. ## Industrial temperature grade and supply rail tolerance Rated for -40 to +85 °C ambient (TA) — this is the industrial temperature band covering factory-floor enclosures, outdoor telecom cabinets, and engine-bay-adjacent modules that see 70 °C soak. A 2.5 V LDO with ±2 % tolerance holds the core within spec across load transients. ## Peripherals and connectivity for sensor and motor interfaces On-chip peripherals include Brown-out Detect/Reset, POR, PWM, and a watchdog timer — these reduce the external supervisor IC count to zero for most designs. Connectivity covers I²C, SPI, SSI, UART/USART, plus a Quadrature Encoder Interface (QEI) for direct motor position feedback — a single chip handles encoder read, PWM generation, and fieldbus bridging. A 6-channel 10-bit ADC is integrated — sufficient for monitoring three-phase currents plus a temperature sense and a voltage reference check in a motor-drive application. ## 64-LQFP package — board integration and rework Housed in a 64-LQFP with a 10x10 mm body — the 0.5 mm pitch demands a 4-layer board for fan-out on the inner rows; two-layer breaks out only the outer 32 pins. Surface-mount only — the exposed pad on the LQFP-64 is not a thermal pad (no thermal slug), so the junction-to-ambient thermal resistance is set by the copper area on the top layer, not a bottom-side plane. The Stellaris family was migrated to the Tiva C series, but pin-compatibility is not guaranteed without a board spin. Quantities are lot-specific; full traceability and RoHS compliance documentation are confirmed at RFQ. No stock-holding claim — sourced per order against the BOM quantity.","metaTitle":"LM3S1626-IQR50-A0T Stellaris Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S1626-IQR50-A0T ARM Cortex-M3 MCU, 50 MHz, 128 KB flash, 32 KB SRAM, -40 to +85 °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 1000","Package":"Tape & Reel (TR)","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"33","Core Processor":"ARM® Cortex®-M3","Package / Case":"64-LQFP","Product Status":"Obsolete","Data Converters":"A/D 6x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1626","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$21.9938","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/410e0c357bfaedbea8b659796c8e0779.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1626-IQR50-A0T/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the LM3S1626-IQR50-A0T and how is it quoted?","answer":"Sourced through independent distribution against an RFQ. RoHS compliance documentation is available with each lot."},{"question":"What is the LM3S1626-IQR50-A0T's core speed and memory?","answer":"This is sufficient for control-loop applications like motor commutation or Modbus bridging, but firmware must fit within the 128 KB budget."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1626-IQR50-A0T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1626-IQR50-A0T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:43:25.032Z","lastPublished":"2026-07-21T02:43:25.032Z","indexable":true}}