{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S9D90-IQC80-A1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S9D90-IQC80-A1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S9D90-IQC80-A1","factsUrl":"https://icboms.com/api/mcp/products/LM3S9D90-IQC80-A1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 9000 series LM3S9D90-IQC80-A1, 32-bit single-core MCU, 80 MHz, 512 KB Flash, 96 KB RAM, Ethernet + USB OTG, 100-LQFP, -40 to 85 °C.","salesMarkdown":"This was the part you picked when a single-chip design needed both a fieldbus gateway and a local control loop. ## 80 MHz Cortex-M3 — what that means for protocol throughput At 80 MHz the Cortex-M3 core can handle Ethernet, USB, and CAN traffic when the DMA engine moves packet data. ## Obsolete — sourcing this part today Texas Instruments ended production on the Stellaris line after the acquisition by TI, and no direct pin-compatible replacement was released. ## Ethernet and USB OTG — what the connectivity set enables The on-chip Ethernet MAC with integrated PHY and the USB OTG controller make this MCU a natural fit for an industrial gateway that bridges a CAN-based machine to a plant network, or for a programmable logic controller that serves a web interface over Ethernet. The USB OTG port can act as a host for a flash drive (firmware update logging) or as a device for configuration from a laptop. The 60 I/O pins leave room for parallel LCD interfaces or a bank of opto-isolated inputs alongside the network ports. ## Package and temperature grade — board-level fit The 100-LQFP (14x14 mm) is a common footprint for mid-density MCUs; the 0.5 mm pitch means a 4-layer board with via-in-pad is not required, but a solid ground plane under the package helps with Ethernet PHY noise.","metaTitle":"LM3S9D90-IQC80-A1 Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"LM3S9D90-IQC80-A1 Stellaris ARM Cortex-M3S 9000 MCU, 80 MHz, 512 KB Flash, 96 KB RAM, Ethernet, USB OTG, 100-LQFP.","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 9000","Package":"Tray","RAM Size":"96K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, Ethernet, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"60","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S9D90","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":"https://cdn.icboms.com/49903a9264bbb7ca0ead4180037f9a51.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S9D90-IQC80-A1 obsolete?","answer":"Yes, the LM3S9D90-IQC80-A1 is listed as obsolete. Texas Instruments no longer manufactures this Stellaris device."},{"question":"What is the replacement or equivalent for LM3S9D90-IQC80-A1?","answer":"There is no direct pin-compatible replacement from TI for this specific Stellaris part. Designs requiring the same peripheral set (Ethernet MAC+PHY, USB OTG, CAN, 512 KB Flash, 100-LQFP) typically migrate to a newer Cortex-M4 or M7 family such as the TM4C129x series, but those are not footprint-compatible. A board redesign is needed."},{"question":"Can LM3S9D90-IQC80-A1 be used for Ethernet or USB OTG applications?","answer":"Yes. The LM3S9D90-IQC80-A1 includes an integrated Ethernet MAC with PHY and a USB OTG controller, making it suitable for designs that require both wired networking and USB host/device capability on a single MCU."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S9D90-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/LM3S9D90-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}}