{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2651-IQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2651-IQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2651-IQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S2651-IQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 Microcontroller, LM3S2651-IQC50-A2T, 50MHz, 128KB Flash, 32K x 8 RAM, 53 I/O, 100-LQFP, -40°C to 85°C.","salesMarkdown":"## 100-LQFP Cortex-M3 with CAN and industrial temp range The Texas Instruments LM3S2651-IQC50-A2T is a Stellaris-series ARM Cortex-M3 microcontroller in a 100-pin LQFP package (14x14 mm). ## Peripheral mix and I/O budget With 53 general-purpose I/O lines and a connectivity block that includes CANbus, I²C, SPI, SSI, UART/USART, and IrDA, this MCU can bridge multiple serial buses in a single node. The four 10-bit ADC channels handle basic analog sensing without an external converter. On-chip peripherals include a brown-out detect/reset, POR, PWM outputs, and a watchdog timer — enough to implement a simple motor-control or sensor-fusion loop without external supervisory ICs. ## NRND lifecycle — what it means for procurement Texas Instruments has designated the LM3S2651-IQC50-A2T as NRND (Not Recommended for New Designs). This means the part is still available for existing production but is not intended for new design-ins. For BOM lines already using this MCU, sourcing through independent distribution is the practical path. ## Board integration — 100-LQFP footprint The 100-LQFP with 0.5 mm pitch demands a multi-layer PCB for fan-out — a two-layer board will struggle to route all 53 I/O plus the power and ground planes. The 14x14 mm body with an exposed pad (if present on this variant) needs a thermal via array under the package to keep the junction temperature within the -40 to +85°C operating range. Supply decoupling should follow the 2.25 V to 2.75 V rail tolerance — a 2.5 V LDO with 200 mV dropout margin covers the full range.","metaTitle":"TI LM3S2651-IQC50-A2T Cortex-M3 MCU, 50MHz, 128KB Flash","metaDescription":"Texas Instruments LM3S2651-IQC50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 32KB RAM, 100-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 2000","Package":"Tape & Reel (TR)","RAM Size":"32K 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":"53","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2651","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":"$33.7336","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S2651-IQC50-A2T/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the LM3S2651-IQC50-A2T and get a price?","answer":"This part is sourced through independent distribution channels. No stock-holding or fixed price is published here."},{"question":"What is the LM3S2651-IQC50-A2T's core speed and memory?","answer":"The ARM Cortex-M3 core runs at 50 MHz. On-chip memory consists of 128 KB of flash and 32 KB of SRAM (32K x 8)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2651-IQC50-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/LM3S2651-IQC50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:51:19.679Z","lastPublished":"2026-07-21T02:51:19.679Z","indexable":true}}