{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5951-IQC80-C3T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5951-IQC80-C3T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5951-IQC80-C3T","factsUrl":"https://icboms.com/api/mcp/products/LM3S5951-IQC80-C3T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series LM3S5951-IQC80-C3T, 32-bit single-core MCU, 80 MHz, 256 KB Flash, 64 KB RAM, 100-LQFP, -40°C to 85°C.","salesMarkdown":"## 80 MHz Cortex-M3 with 256 KB Flash — what it was built for The Texas Instruments LM3S5951-IQC80-C3T is a 32-bit ARM Cortex-M3 MCU from the Stellaris® 5000 series, clocked at 80 MHz with 256 KB of Flash and 64 KB of RAM. ## Obsolete — sourcing reality for the BOM line ## Memory sizing — 256 KB Flash, 64 KB RAM 256 KB of program Flash and 64 KB of RAM is the sweet spot for a mid-complexity embedded application. The Flash holds a full TCP/IP stack, a CANopen node, and a modest RTOS kernel with room left for application code. The 64 KB RAM is enough for two or three packet buffers, a display frame buffer at 320x240 monochrome, or a data-logging ring buffer for a few thousand sensor readings. If the firmware needs field-update capability, the Flash endurance is rated for the standard 100k write/erase cycles typical of this process node — adequate for OTA updates over a product lifetime, but not for wear-leveled file-system storage.","metaTitle":"Texas Instruments LM3S5951-IQC80-C3T Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"LM3S5951-IQC80-C3T is an obsolete Stellaris ARM Cortex-M3 MCU with 80 MHz speed, 256 KB Flash, 64 KB RAM, industrial temp. Sourced to order against RFQ through independent distribu","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 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5951","Program Memory Size":"256KB (256K 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/d4b8f5fe4f034d9306544eb41e7eafcc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5951-IQC80-C3T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S5951-IQC80-C3T obsolete?","answer":"Yes, the LM3S5951-IQC80-C3T is marked obsolete by Texas Instruments. There is no official successor order code listed. The part is available through surplus and broker channels, sourced to order against an RFQ."},{"question":"What is the replacement for LM3S5951-IQC80-C3T?","answer":"No official replacement or successor is listed in the lifecycle record. The Stellaris family has been phased out; TI's current Tiva-C and Hercules MCU lines are not pin-compatible. For a drop-in replacement, the only option is sourcing the exact LM3S5951-IQC80-C3T from surplus inventory."},{"question":"Where can I buy LM3S5951-IQC80-C3T?","answer":"The LM3S5951-IQC80-C3T is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. Submit an RFQ for a lot-specific quote including date-code spread and packaging condition."},{"question":"What is LM3S5951-IQC80-C3T's listed speed?","answer":"The core runs at 80 MHz on a 32-bit ARM Cortex-M3 single-core processor. This is the maximum clock speed; the internal oscillator and PLL can generate it from an external crystal or the internal oscillator."},{"question":"What is the LM3S5951-IQC80-C3T datasheet?","answer":"The datasheet covers the full Stellaris LM3S5000 series. It includes the electrical characteristics, pinout for the 100-LQFP package, memory map, peripheral register descriptions, and application notes for the CAN, USB, and serial interfaces."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5951-IQC80-C3T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5951-IQC80-C3T 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}}