{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5K31-IQC80-C1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5K31-IQC80-C1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5K31-IQC80-C1","factsUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IQC80-C1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series MCU, LM3S5K31-IQC80-C1, 32-bit single-core, 80 MHz, 128 KB Flash, 24K x 8 RAM, 67 I/O, 100-LQFP, -40°C to 85°C.","salesMarkdown":"The LM3S5K31-IQC80-C1 is a 32-bit ARM Cortex-M3 MCU from the Stellaris 5000 series, clocked at 80 MHz with 128 KB Flash and 24K x 8 SRAM. The 80 MHz core delivers enough throughput for motor-control loops, CAN-based industrial networks, and USB data-logging applications without external memory expansion. The 128 KB Flash is sized for mid-complexity firmware stacks; the 24K x 8 SRAM leaves headroom for moderate buffering in communication protocols. This part is officially obsolete per the manufacturer's product status. No direct replacement has been listed in the available records. The Stellaris family has been discontinued; a replacement would require a pin-compatible migration to a newer TI Cortex-M4F or another ARM MCU. The LM3S5K31 includes CAN, I²C, SPI, SSI, UART, IrDA, and USB interfaces, plus a QEI for motor feedback. The 16-channel 10-bit ADC samples at rates suitable for current sensing and temperature monitoring in industrial drives. Brown-out detection and POR are built in, reducing external supervisor IC count.","metaTitle":"LM3S5K31-IQC80-C1 Stellaris ARM Cortex-M3 MCU, 80 MHz, 128 KB Flash","metaDescription":"LM3S5K31-IQC80-C1 is an obsolete Stellaris ARM Cortex-M3 MCU with 80 MHz core, 128 KB Flash, 24K x 8 RAM, industrial temp -40°C to 85°C. 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":"Tray","RAM Size":"24K 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","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":"LM3S5K31","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/ced2e58921dfaf5da21dc5dff9cf3a05.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5K31-IQC80-C1/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S5K31-IQC80-C1?","answer":"No official replacement or successor order code is documented in the available records. A pin-compatible migration to a newer ARM Cortex-M MCU from TI or another vendor would require a design review."},{"question":"Does LM3S5K31-IQC80-C1 require an external oscillator?","answer":"No, the LM3S5K31-IQC80-C1 has an internal oscillator, so an external crystal is not required for basic operation. An external clock source can be used if tighter timing accuracy is needed."},{"question":"What is the speed of LM3S5K31-IQC80-C1?","answer":"The LM3S5K31-IQC80-C1 runs at 80 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5K31-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/LM3S5K31-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}}