{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S9U90-IQC80-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S9U90-IQC80-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S9U90-IQC80-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S9U90-IQC80-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 9000 series LM3S9U90-IQC80-A2T, 32-bit single-core MCU, 80 MHz, 384 KB Flash, 96K x 8 RAM, 100-LQFP, -40°C to 85°C.","salesMarkdown":"## 80 MHz Cortex-M3 with Ethernet, CAN, USB OTG — what it means for a BOM line It packs 384 KB of Flash and 96 KB of RAM, a pairing sized for protocol-stack-heavy applications like industrial Ethernet gateways or CAN-to-Ethernet bridges. The peripheral set — Ethernet MAC+PHY, CAN 2.0B, USB OTG, multiple UART/SPI/I²C, and a 16-channel 12-bit ADC — means a single chip can handle fieldbus, HMI, and backhaul connectivity without external controllers. ## Obsolete — planning the last buy or sourcing surplus That means Texas Instruments has ended production — no further factory orders are accepted. The 100-LQFP footprint is common across the Stellaris 9000 family, so a pin-compatible migration to a sibling with similar memory and peripheral map may be possible, but no official replacement order code is listed. Any incoming stock should be date-code traced and visually inspected — the laser etch on the 100-LQFP body is a clean authenticity marker against re-marked parts. ## Memory and connectivity headroom for protocol stacks 384 KB of Flash and 96 KB of RAM give this MCU enough headroom to run a full TCP/IP stack alongside a CANopen or Modbus application, plus a USB device/host stack. The 80 MHz Cortex-M3 core delivers roughly 1.25 DMIPS/MHz, so sustained throughput for Ethernet packet processing at 100 Mbps is feasible with careful interrupt prioritization. The 16-channel 12-bit ADC at 1 MSps covers analog sensor acquisition — thermocouples, pressure transducers, current shunts — without an external ADC. Brown-out reset and POR are on-chip, reducing external supervisor IC count.","metaTitle":"LM3S9U90-IQC80-A2T Stellaris ARM Cortex-M3 MCU, 80 MHz","metaDescription":"LM3S9U90-IQC80-A2T is a 32-bit Stellaris ARM Cortex-M3 MCU at 80 MHz with 384 KB Flash, 96 KB RAM, Ethernet, CAN, USB OTG.","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":"Tape & Reel (TR)","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, EBI/EMI, 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":"LM3S9U90","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/d5a3c7f4e6d8156d26ead837ff8fd0d0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S9U90-IQC80-A2T obsolete?","answer":"Yes. The lifecycle status is Obsolete — Texas Instruments has discontinued production."},{"question":"What is the replacement for LM3S9U90-IQC80-A2T?","answer":"The Stellaris 9000 family includes pin-compatible siblings with similar memory and peripheral maps, but a direct drop-in is not confirmed. A design review of the target application's peripheral and memory requirements is recommended before selecting an alternate."},{"question":"Does LM3S9U90-IQC80-A2T have USB OTG?","answer":"Yes, USB OTG is listed in the connectivity set alongside Ethernet, CAN, I²C, SPI, UART, and IrDA."},{"question":"What is LM3S9U90-IQC80-A2T's listed speed?","answer":"The core is rated at 80 MHz, which is the maximum clock for the ARM Cortex-M3 processor in this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S9U90-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/LM3S9U90-IQC80-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}