{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5G51-IQC80-A1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5G51-IQC80-A1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5G51-IQC80-A1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5G51-IQC80-A1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5G51-IQC80-A1T, 32-Bit Single-Core MCU, 80MHz, 384KB Flash, 64K x 8 RAM, 67 I/O, CANbus, USB OTG, SPI, UART, 3V~3.6V, -40°C~85°C, 100-LQFP.","salesMarkdown":"## 80 MHz Cortex-M3 with USB OTG and CAN — what it brings to a control design It belongs to the Stellaris ARM Cortex-M3S 5000 series, a family aimed at real-time control applications that need a rich peripheral set without an external PHY or transceiver for USB and CAN. The 80 MHz core gives it enough throughput to handle a motor-control FOC loop alongside a CANopen stack and a USB virtual-comport debug channel without stalling. The 67 GPIOs, mapped through a 100-LQFP package, leave headroom for a parallel LCD interface or a bank of isolated digital inputs on the same board. ## Connectivity and analog — what the peripheral list covers The 16-channel 12-bit ADC covers analog feedback from current sensors or thermistors without an external multiplexer. Internal oscillator trims the BOM by one crystal if the application tolerates the ±1% accuracy over temperature. The LM3S5G51-IQC80-A1T is officially obsolete per Texas Instruments' product status. No last-time-buy window remains open through the factory channel. A buyer filling a BOM line should expect to source from verified inventory lots — date codes may span several years, and the part should be tested for solderability and functional integrity before assembly. There is no pin-compatible direct replacement from TI's current active portfolio; the Stellaris family was superseded by the Tiva C Series, which uses a different register map and requires firmware migration.","metaTitle":"TI LM3S5G51-IQC80-A1T ARM Cortex-M3 MCU, 80MHz, 384KB Flash","metaDescription":"Texas Instruments Stellaris LM3S5G51-IQC80-A1T: 80MHz ARM Cortex-M3, 384KB Flash, 64KB RAM, USB OTG, CAN, SPI, 67 I/O, -40°C to 85°C, 100-LQFP.","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":"Tape & Reel (TR)","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":"LM3S5G51","Program Memory Size":"384KB (384K 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/LM3S5G51-IQC80-A1T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S5G51-IQC80-A1T obsolete?","answer":"Yes, Texas Instruments lists the LM3S5G51-IQC80-A1T as obsolete. There is no active factory production or last-time-buy window. Any stock in the channel is surplus inventory from prior production runs."},{"question":"What is the replacement for LM3S5G51-IQC80-A1T?","answer":"TI does not offer a pin-compatible direct replacement from its current portfolio. The Tiva C Series (e.g., TM4C123GH6PM) is the architectural successor but uses a different register map and requires firmware migration. For a drop-in fit, the only option is sourcing the exact LM3S5G51 from surplus stock."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5G51-IQC80-A1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5G51-IQC80-A1T 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}}