{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5P3B-IQC80-C5","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5P3B-IQC80-C5","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5P3B-IQC80-C5","factsUrl":"https://icboms.com/api/mcp/products/LM3S5P3B-IQC80-C5","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 series, LM3S5P3B-IQC80-C5, 32-bit single-core MCU, 80 MHz, 64 KB Flash, 24 KB RAM, 67 I/O, USB/CAN/I²C/SPI/UART/LIN, 100-LQFP 14×14 mm, -40°C to 85°C, 1.08 V–1.32 V VCC.","salesMarkdown":"The LM3S5P3B-IQC80-C5 is a 32-bit ARM Cortex-M3 MCU from the Stellaris 5000 series, clocked at 80 MHz with 64 KB Flash and 24 KB RAM. 80 MHz on a Cortex-M3 gives you about 80 DMIPS throughput — enough for real-time control loops, protocol stacks (USB, CAN), and moderate data processing without an external memory bus. The 24 KB RAM handles a few KB of stack and buffers; the 64 KB Flash holds a firmware image with a USB stack and application code. If your design needs more headroom for heavy DSP or large lookup tables, you would step up to a higher-density Stellaris variant or a Cortex-M4 part. Supply voltage is 1.08 V to 1.32 V core.","metaTitle":"Texas Instruments LM3S5P3B-IQC80-C5 ARM Cortex-M3 MCU, 80 MHz","metaDescription":"Texas Instruments LM3S5P3B-IQC80-C5 Stellaris ARM Cortex-M3 MCU, 80 MHz, 64 KB Flash, 24 KB RAM, 67 I/O, USB/CAN/SPI/UART, -40°C to 85°C, 100-LQFP. Obsolete — sourced to order.","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, I²S, 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":"LM3S5P3B","Program Memory Size":"64KB (64K 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/1e170c9265950f6bd18c989aa04fd562.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5P3B-IQC80-C5/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LM3S5P3B-IQC80-C5 and get a price?","answer":"This obsolete part is sourced through independent distribution. Submit an RFQ for current availability and pricing — stock and lead time are confirmed at quote time."},{"question":"What is the closest pin-compatible alternative to LM3S5P3B-IQC80-C5?","answer":"Within the Stellaris 5000 series, several 100-LQFP variants share the same pinout. Check the LM3S5xxx cross-reference for a part with matching Flash/RAM and peripheral set — the exact replacement depends on your required memory and interface configuration."},{"question":"What is the LM3S5P3B-IQC80-C5's core speed?","answer":"The core runs at 80 MHz, delivering roughly 80 DMIPS on the ARM Cortex-M3 pipeline."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5P3B-IQC80-C5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5P3B-IQC80-C5 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}}