{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5C56-IQR80-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5C56-IQR80-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5C56-IQR80-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5C56-IQR80-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series MCU, LM3S5C56-IQR80-A2T, 32-bit single-core, 80 MHz, 512 KB Flash, 64 KB RAM, 64-LQFP (10x10 mm), -40 to 85°C, 33 I/O, CAN, USB OTG, multiple serial interfaces.","salesMarkdown":"The LM3S5C56-IQR80-A2T is a 32-bit ARM Cortex-M3 MCU from TI's Stellaris 5000 series, clocked at 80 MHz with 512 KB Flash and 64 KB RAM. It carries a full set of industrial connectivity — CAN, USB OTG, UART/USART, SPI, I2C, LIN, IrDA, and QEI for quadrature encoder inputs — plus an 8-channel 12-bit ADC. ## 80 MHz Cortex-M3 — what the speed buys you The 80 MHz core runs a real-time control loop while handling CAN and USB traffic. The 512 KB Flash and 64 KB RAM support multiple protocol buffers without external memory. ## Connectivity and peripheral set — what's on the chip The LM3S5C56 integrates a CAN controller, USB OTG, and serial interfaces: UART/USART, SPI, SSI, I2C, Microwire, IrDA, and LIN. The QEI reads motor position from incremental encoders without bit-banging.","metaTitle":"LM3S5C56-IQR80-A2T Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"Texas Instruments LM3S5C56-IQR80-A2T Stellaris ARM Cortex-M3S 5000 MCU, 80 MHz, 512 KB Flash, 64 KB RAM, 64-LQFP, -40 to 85°C. Obsolete — sourced to order against RFQ.","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, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG","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 8x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5C56","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-LQFP (10x10)","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/LM3S5C56-IQR80-A2T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S5C56-IQR80-A2T?","answer":"No official pin-compatible successor is listed in the available records. For new designs, consider TI's TM4C series (Cortex-M4F) but verify pinout and peripheral compatibility against your layout — migration is not drop-in."},{"question":"What is LM3S5C56-IQR80-A2T's listed speed?","answer":"The core runs at 80 MHz."},{"question":"What is the operating temperature range for LM3S5C56-IQR80-A2T?","answer":"It is rated for -40°C to 85°C, which covers industrial environments."},{"question":"Where can I buy LM3S5C56-IQR80-A2T?","answer":"We source this obsolete part to order against an RFQ through independent distribution. Submit a request for current pricing and availability — we confirm both at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5C56-IQR80-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/LM3S5C56-IQR80-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}