{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S812-IQN50-C2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S812-IQN50-C2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S812-IQN50-C2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S812-IQN50-C2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 800 series LM3S812-IQN50-C2T, 32-bit single-core MCU at 50 MHz, 64 KB Flash, 8 KB RAM, 34 I/O, 48-LQFP (7x7 mm), 3 V–3.6 V supply, -40°C to 85°C operating temperature, tape and reel.","salesMarkdown":"That means TI has flagged it for eventual end-of-life — no new product should start with this MCU. For existing production, you are looking at a last-time-buy window or sourcing through the independent channel. If you are qualifying a replacement, the Stellaris family has pin-compatible higher-density siblings that share the same 48-LQFP footprint and supply range, though no single official successor is listed on this record. At 50 MHz the Cortex-M3 core can handle a 10 kHz PID loop with margin for communications overhead. The 8 KB SRAM is tight for large data buffers — budget it for a few hundred bytes of state variables plus a modest UART or SPI FIFO. The 64 KB Flash holds a bare-metal application or a small RTOS kernel; if your firmware needs OTA staging or a file system, you will bump against the ceiling. ## Peripherals and I/O — what connects where The 34 I/O lines are enough for a keypad matrix, a character LCD, and a few sensor interrupts. The two 10-bit ADC channels are single-ended — fine for reading a potentiometer or a thermistor, but not for differential or high-resolution measurements. The UART/USART and SPI interfaces cover common serial protocols; the Microwire and SSI modes add legacy sensor compatibility. An internal oscillator is on die, so you can save a crystal for non-critical timing.","metaTitle":"Texas Instruments LM3S812-IQN50-C2T ARM Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S812-IQN50-C2T Stellaris ARM Cortex-M3 MCU, 50 MHz, 64 KB Flash, 8 KB RAM, 34 I/O, 48-LQFP, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"50MHz","title":"LM3S812-IQN50-C2T","Series":"Stellaris® ARM® Cortex®-M3S 800","Package":"Tape & Reel (TR)","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"34","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Data Converters":"A/D 2x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S812","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.4616","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S812-IQN50-C2T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S812-IQN50-C2T obsolete or NRND?","answer":"It is not yet fully discontinued, but TI has signaled it is on the path to end-of-life. For existing production, source it through independent distribution against an RFQ; for new designs, look at a pin-compatible Stellaris sibling with the same 48-LQFP footprint."},{"question":"What is the replacement for LM3S812-IQN50-C2T?","answer":"No single official replacement is listed on this record. The Stellaris family includes higher-density parts in the same 48-LQFP package and 3 V–3.6 V supply range — a pin-compatible upgrade with more Flash or RAM would be the natural next step. Confirm the exact pinout and peripheral set against your PCB before committing."},{"question":"Does LM3S812-IQN50-C2T have a datasheet with pinout?","answer":"The datasheet is available from Texas Instruments and includes the full pinout for the 48-LQFP package. Verify the pin assignments against your schematic — the 48-pin LQFP layout is standard across the Stellaris 800 series, but always cross-check the specific signal mapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S812-IQN50-C2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S812-IQN50-C2T 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}}