{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5651-IQC80-C1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5651-IQC80-C1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5651-IQC80-C1","factsUrl":"https://icboms.com/api/mcp/products/LM3S5651-IQC80-C1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series MCU, LM3S5651-IQC80-C1, 32-Bit Single-Core 80MHz, 128KB FLASH, 32K x 8 RAM, 100-LQFP, -40 to 85°C.","salesMarkdown":"## What this Stellaris Cortex-M3 MCU brings to a control design The LM3S5651-IQC80-C1: It carries 128 KB of program Flash and 32 K x 8 of SRAM — enough for a moderate control stack with a CANopen or USB device profile running alongside the main loop. The peripheral set includes CAN, USB OTG, I2C, SPI, SSI, UART, LIN, and IrDA, plus a 16-channel 10-bit ADC, PWM timers, and a quadrature encoder interface for motor-feedback loops. The 80 MHz core clock runs at the speed listed in the spec table. ## Peripheral set for a single-chip node The connectivity list includes CAN, USB OTG, I2C, SPI, UART, LIN, and IrDA. The Stellaris family was acquired and transitioned; the closest functional equivalents today are other Cortex-M3 or M4 parts from NXP, ST, or Renesas, but those will require a board respin and firmware port. For BOM lines that need this exact order code, the only channel is the independent surplus and new-old-stock market.","metaTitle":"LM3S5651-IQC80-C1 Stellaris ARM Cortex-M3 MCU, 80MHz","metaDescription":"LM3S5651-IQC80-C1 Stellaris ARM Cortex-M3 32-bit MCU, 80MHz, 128KB Flash, 32Kx8 RAM, 67 I/O, CAN/USB OTG, -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":"80MHz","Series":"Stellaris® ARM® Cortex®-M3S 5000","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"67","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5651","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)":"1.08V ~ 1.32V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9315fa200c803917e7b307e71a010347.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5651-IQC80-C1/alternatives.json"},"ai":{"faq":[{"question":"Is the LM3S5651-IQC80-C1 obsolete?","answer":"Yes, TI has listed the LM3S5651-IQC80-C1 as obsolete. There is no official direct replacement from TI; the part is only available through surplus and new-old-stock channels."},{"question":"What is the replacement for LM3S5651-IQC80-C1?","answer":"No official pin-compatible replacement is recorded. A functional replacement would require selecting a current Cortex-M3 or M4 MCU from another vendor (NXP, ST, Renesas) with similar Flash, RAM, and peripheral mix, which will involve a PCB layout change and firmware migration."},{"question":"Where can I buy LM3S5651-IQC80-C1?","answer":"Submit a request for quote and we will confirm availability and current pricing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5651-IQC80-C1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5651-IQC80-C1 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}}