{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1D21-IQC80-A1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1D21-IQC80-A1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1D21-IQC80-A1","factsUrl":"https://icboms.com/api/mcp/products/LM3S1D21-IQC80-A1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1D21-IQC80-A1, 32-bit single-core MCU, 80 MHz, 512 KB Flash, 96 KB RAM, 100-LQFP, -40 to 85°C.","salesMarkdown":"The Texas Instruments LM3S1D21-IQC80-A1 is a 32-bit ARM Cortex-M3 MCU from the Stellaris series, clocked at 80 MHz with 512 KB of Flash and 96 KB of RAM. It carries 67 I/O lines, an 8-channel 12-bit ADC, and serial interfaces including I²C, SPI, SSI, UART, IrDA, LIN, and Microwire, plus an external bus interface. The 100-LQFP package (14x14 mm body) and industrial temperature range (-40 to 85 °C) suit it for factory automation, motor control, and outdoor telecom equipment. The LM3S1D21-IQC80-A1 is marked obsolete by Texas Instruments.","metaTitle":"Texas Instruments LM3S1D21-IQC80-A1 Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"LM3S1D21-IQC80-A1 Stellaris ARM Cortex-M3 MCU, 80 MHz, 512 KB Flash, 96 KB RAM, 100-LQFP, -40 to 85°C. 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":"$7.8700","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1D21-IQC80-A1/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S1D21-IQC80-A1 obsolete?","answer":"Yes, the LM3S1D21-IQC80-A1 is marked obsolete by Texas Instruments. It is not recommended for new designs. Existing BOM lines can be filled through independent distribution — submit an RFQ for current availability and pricing."},{"question":"What is the replacement for LM3S1D21-IQC80-A1?","answer":"No official replacement part number is listed in the lifecycle record. For a pin-compatible migration path, evaluate other Stellaris LM3S series parts in the same 100-LQFP package, but verify peripheral compatibility and supply voltage (1.235 V to 1.365 V core) against your design."},{"question":"What is LM3S1D21-IQC80-A1's listed speed?","answer":"The core runs at 80 MHz, based on the ARM Cortex-M3 architecture. That clock rate delivers roughly 100 MIPS with the single-cycle multiply and hardware divide."},{"question":"What is the pinout of LM3S1D21-IQC80-A1?","answer":"The device is housed in a 100-LQFP package (14x14 mm) with 67 general-purpose I/O pins. The full pinout is available in the Texas Instruments datasheet for the LM3S1D21."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1D21-IQC80-A1","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-A1 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}}