{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5P31-IBZ80-C3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5P31-IBZ80-C3","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5P31-IBZ80-C3","factsUrl":"https://icboms.com/api/mcp/products/LM3S5P31-IBZ80-C3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series MCU, LM3S5P31-IBZ80-C3, 80MHz, 64KB Flash, 24K x 8 RAM, 108-BGA, -40°C to 85°C.","salesMarkdown":"## 80 MHz Cortex-M3 with 64 KB Flash — what the BGA package means for board layout The LM3S5P31-IBZ80-C3: The 108-BGA package (10x10 mm) routes all 67 I/O and the full peripheral set — CAN, USB, multiple serial interfaces — through a fine-pitch ball grid that demands a 4-layer PCB for fan-out. Texas Instruments lists the LM3S5P31-IBZ80-C3 as Obsolete. ## Peripheral set and memory headroom for control applications The 80 MHz Cortex-M3 core delivers roughly 100 DMIPS — enough for real-time control loops with sensor fusion. The 64 KB Flash and 24K x 8 SRAM leave about 12 KB of RAM after a lightweight RTOS and stack, so data logging or USB buffers need careful budgeting. On-chip peripherals include a 16-channel 10-bit ADC, PWM, CAN, USB, and multiple serial interfaces (I²C, SPI, UART). ## Temperature grade and environment The internal oscillator eliminates an external crystal for basic timing, but USB operation still requires a precision external source.","metaTitle":"Texas Instruments LM3S5P31-IBZ80-C3 ARM Cortex-M3 MCU, 80MHz","metaDescription":"Texas Instruments LM3S5P31-IBZ80-C3 Stellaris ARM Cortex-M3 MCU, 80MHz, 64KB Flash, 24K RAM, 108-BGA. 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":"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":"108-LFBGA","Product Status":"Obsolete","Data Converters":"A/D 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5P31","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"108-BGA (10x10)","Voltage - Supply (Vcc/Vdd)":"1.08V ~ 1.32V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6eb0e448a2435bd671cb24636bc93dca.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5P31-IBZ80-C3/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S5P31-IBZ80-C3?","answer":"No official pin-compatible alternative is listed by Texas Instruments for this part. The Stellaris family includes other Cortex-M3 devices with similar peripheral sets, but package and pinout differences require a board spin. Confirm the BOM position and mating half before committing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5P31-IBZ80-C3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5P31-IBZ80-C3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:55:19.392Z","lastPublished":"2026-07-21T02:55:19.392Z","indexable":true}}