{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1D21-IBZ80-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1D21-IBZ80-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1D21-IBZ80-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1D21-IBZ80-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series LM3S1D21-IBZ80-A2T, 32-Bit Single-Core MCU, 80MHz, 512KB Flash, 96K x 8 RAM, 67 I/O, 108-LFBGA, -40°C~85°C.","salesMarkdown":"## 108-BGA footprint and industrial temperature range Housed in a 108-ball LFBGA (10x10 mm body), this part demands a fine-pitch BGA layout — expect via-in-pad or microvia routing for the center balls. Supply voltage is a tight 1.235 V to 1.365 V core rail, so the board needs a clean 1.3 V LDO or switcher with low ripple; the I/O bank runs from a separate 3.3 V supply (not listed here but standard for the Stellaris family). An internal oscillator is on-die, but for precision CAN or USB timing an external crystal is still the safer call. For BOM lines that still need this exact MCU — legacy product support, field-service repairs, or a design that cannot migrate — the only channel is the surplus and broker market. If your project is still in design, consider a pin-compatible Stellaris sibling or a current TI Cortex-M4 part with a similar peripheral map to avoid a future last-time-buy scramble.","metaTitle":"LM3S1D21-IBZ80-A2T Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"LM3S1D21-IBZ80-A2T is an obsolete Stellaris ARM Cortex-M3 MCU with 80 MHz core, 512 KB Flash, 96 KB RAM, 67 I/O, industrial temp.","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":"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":"108-LFBGA","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":"108-BGA (10x10)","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":"Is LM3S1D21-IBZ80-A2T obsolete?","answer":"Yes, the lifecycle status for LM3S1D21-IBZ80-A2T is obsolete."},{"question":"What is the replacement for LM3S1D21-IBZ80-A2T?","answer":"No official replacement order code is recorded for LM3S1D21-IBZ80-A2T. For new designs, consider a current TI Cortex-M4 MCU with similar Flash and RAM sizing; for legacy BOMs, source through surplus channels against an RFQ."},{"question":"What are the specifications of LM3S1D21-IBZ80-A2T?","answer":"It has 512 KB Flash, 96 KB RAM, 67 I/O, an 8-channel 12-bit ADC, and peripherals including EBI/EMI, I²C, SPI, UART, and PWM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1D21-IBZ80-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/LM3S1D21-IBZ80-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}