{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1D21-IQC80-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1D21-IQC80-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1D21-IQC80-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1D21-IQC80-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 microcontroller, LM3S1D21-IQC80-A2, 80MHz, 512KB Flash, 96KB RAM, 100-LQFP, -40°C~85°C.","salesMarkdown":"## Core architecture and memory map The LM3S1D21-IQC80-A2: On-chip memory comprises 512 KB of Flash and 96 KB of SRAM — the Flash is sized for moderate application code plus a bootloader, while the SRAM supports a real-time OS heap and multiple DMA buffers without external memory. The connectivity block includes I²C, SPI, SSI, UART/USART, IrDA, LINbus, Microwire, and an external bus interface (EBI/EMI) — the latter allows direct attachment of an external SRAM or NOR Flash without a glue-logic CPLD. On-chip peripherals include a brown-out detect, power-on reset, DMA controller, PWM outputs, and a watchdog timer. An 8-channel 12-bit ADC handles analog inputs from sensors or potentiometers without an external converter. Texas Instruments has marked the LM3S1D21-IQC80-A2 as obsolete. New designs should migrate to a current-generation Cortex-M3 or M4 part with similar peripheral mapping.","metaTitle":"Texas Instruments LM3S1D21-IQC80-A2 MCU, 80MHz, 512KB Flash","metaDescription":"Texas Instruments LM3S1D21-IQC80-A2 Stellaris ARM Cortex-M3 MCU, 80MHz, 512KB Flash, 96KB RAM, 100-LQFP. 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 1000","Package":"Tray","RAM Size":"96K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"EBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART","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 8x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1D21","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.235V ~ 1.365V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LM3S1D21-IQC80-A2?","answer":"The LM3S1D21-IQC80-A2 is obsolete per Texas Instruments. No stock-holding claim is made — each order is verified against available surplus or new-old-stock lots."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1D21-IQC80-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1D21-IQC80-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:47:00.607Z","lastPublished":"2026-07-21T02:47:00.607Z","indexable":true}}