{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5C51-IQC80-A1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5C51-IQC80-A1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5C51-IQC80-A1","factsUrl":"https://icboms.com/api/mcp/products/LM3S5C51-IQC80-A1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5C51-IQC80-A1, 32-bit ARM Cortex-M3 MCU, 80MHz, 512KB Flash, 64KB RAM, USB OTG/CANbus/I2C/SPI/UART, 67 I/O, 100-LQFP (14x14), -40 to 85°C, 3V to 3.6V supply, Tray.","salesMarkdown":"## 80 MHz Cortex-M3 with USB OTG and CAN — what this part was built for The LM3S5C51-IQC80-A1: The 100-LQFP package with 67 general-purpose I/O and a 16-channel 12-bit ADC gives it the pin count for sensor fusion and actuator control on a single board. The LM3S5C51-IQC80-A1 is obsolete. TI has ended production of the Stellaris Cortex-M3 line, and no official direct replacement is listed. For BOM lines already qualified to this MCU, the supply path runs through independent distribution and the surplus market. ## Memory and peripheral fit — what a replacement must match Without an official TI successor, the closest functional alternatives are other ARM Cortex-M3 or M4 devices in 100-LQFP with matching USB + CAN — but every candidate requires a firmware port and a board respin if the pinout differs.","metaTitle":"TI LM3S5C51-IQC80-A1 ARM Cortex-M3 MCU, 80MHz, 512KB Flash","metaDescription":"Texas Instruments Stellaris LM3S5C51-IQC80-A1 32-bit ARM Cortex-M3 MCU at 80MHz with 512KB Flash, 64KB RAM, USB OTG/CANbus/I2C/SPI/UART, 67 I/O, 100-LQFP, -40","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":"64K 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 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5C51","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5C51-IQC80-A1/alternatives.json"},"ai":{"faq":[{"question":"Who supplies LM3S5C51-IQC80-A1 and how is it quoted for volume purchases?","answer":"Sourced to order through independent distribution against an RFQ. Availability and volume pricing are confirmed at quote time — no live inventory or published per-unit price appears in this ledger."},{"question":"What is LM3S5C51-IQC80-A1's listed speed?","answer":"The listed speed is 80MHz, driven by the ARM Cortex-M3 core with a single-cycle multiplier and hardware divide."},{"question":"What series does the LM3S5C51-IQC80-A1 belong to?","answer":"The listed series is Stellaris ARM Cortex-M3S 5000 — part of TI's pre-acquisition Stellaris MCU family that became the foundation of the Tiva C Series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5C51-IQC80-A1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5C51-IQC80-A1 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}}