{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1G21-IQC80-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1G21-IQC80-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1G21-IQC80-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1G21-IQC80-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series MCU, LM3S1G21-IQC80-A2T, 32-bit single-core, 80MHz, 384KB flash, 64KB SRAM, 100-LQFP (14x14 mm), industrial temp -40°C to 85°C.","salesMarkdown":"## 100-LQFP package — fan-out planning for the 67 I/O The LM3S1G21-IQC80-A2T: Housed in a 100-LQFP (14x14 mm) with a 0.50 mm pitch, this part demands a 4-layer PCB for reliable fan-out of the 67 general-purpose I/O. ## Industrial temperature grade and peripheral set On-chip peripherals include an 8-channel 12-bit ADC, DMA controller, PWM timers, and a brown-out reset — enough signal-chain support to close a current loop without an external ADC. Connectivity covers I²C, SPI, UART, LIN, and an external memory interface. ## Obsolete — last-time-buy sourcing through independent channels Texas Instruments lists this part as obsolete. The 384 KB flash and 64 KB SRAM footprint is common in the Stellaris family, so a board-level redesign to a current-generation Cortex-M4 or M7 part is the typical migration path for new builds.","metaTitle":"LM3S1G21-IQC80-A2T Stellaris Cortex-M3 MCU, 80MHz","metaDescription":"Texas Instruments LM3S1G21-IQC80-A2T Stellaris ARM Cortex-M3 MCU, 80MHz, 384KB flash, 64KB SRAM, 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":"Tape & Reel (TR)","RAM Size":"64K 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":"LM3S1G21","Program Memory Size":"384KB (384K 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":"https://cdn.icboms.com/acebf1361b416656bd85e8d37228c41b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LM3S1G21-IQC80-A2T and how do I get a price?","answer":"This part is obsolete and sourced through independent distribution."},{"question":"What is LM3S1G21-IQC80-A2T's listed speed?","answer":"The core runs at 80 MHz on a 32-bit ARM Cortex-M3 architecture, with 384 KB of flash and 64 KB of SRAM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1G21-IQC80-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1G21-IQC80-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:47:54.467Z","lastPublished":"2026-07-21T02:47:54.467Z","indexable":true}}