{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S9790-IQC80-C1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S9790-IQC80-C1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S9790-IQC80-C1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S9790-IQC80-C1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 9000 series LM3S9790-IQC80-C1T, 32-bit Single-Core MCU, 80MHz, 128KB Flash, 64K x 8 SRAM, 60 I/O, Ethernet + USB OTG + CAN, 100-LQFP, -40°C to 85°C.","salesMarkdown":"## 80 MHz Cortex-M3 with Ethernet, USB OTG, and CAN — the industrial gateway MCU that went EOL The 60 GPIOs and 16-channel 10-bit ADC make it suitable for industrial control panels, building automation gateways, motor drives with fieldbus, and networked sensor concentrators that need wired connectivity in a single chip. The 64 KB SRAM must be budgeted carefully when running Ethernet and USB stacks simultaneously — each Ethernet frame buffer consumes about 1.5 KB, and USB descriptors and endpoint buffers add another 4–8 KB. Designs that need larger data arrays or multiple protocol buffers should consider external memory via the EBI/EMI interface. New-production units are no longer available from the factory. The only supply channel is surplus inventory held by independent distributors and brokers. ## 100-LQFP package and industrial temperature range Housed in a 100-LQFP (14x14 mm) package, this is a fine-pitch QFP that requires careful soldering profile control and X-ray inspection for hidden solder bridges. The core supply is a narrow 1.235 V to 1.365 V range — a dedicated low-noise LDO is recommended, not a shared rail.","metaTitle":"LM3S9790-IQC80-C1T Stellaris ARM Cortex-M3 MCU, 80MHz","metaDescription":"Texas Instruments LM3S9790-IQC80-C1T Stellaris ARM Cortex-M3 MCU, 80MHz, 128KB Flash, 64Kx8 SRAM, Ethernet+USB OTG+CAN, 100-LQFP, -40 to 85°C.","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":"64K 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, 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 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S9790","Program Memory Size":"128KB (128K 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/57393517221c83ebf3150b260ab088b1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S9790-IQC80-C1T obsolete?","answer":"Yes, the LM3S9790-IQC80-C1T is listed as Obsolete by Texas Instruments. No new production is available from the factory. Surplus inventory is the only supply path."},{"question":"What is the replacement for LM3S9790-IQC80-C1T?","answer":"Texas Instruments has not published an official successor order code for this Stellaris part. For new designs, consider current TI Cortex-M4 or TM4C series MCUs with Ethernet and CAN — but verify pin-compatibility and software migration, as no drop-in replacement exists."},{"question":"What package is LM3S9790-IQC80-C1T?","answer":"It comes in a 100-LQFP package (14x14 mm body), surface mount. The supplier device package is 100-LQFP (14x14)."},{"question":"What is the core of LM3S9790-IQC80-C1T?","answer":"The core is an ARM Cortex-M3, 32-bit single-core, running at 80 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S9790-IQC80-C1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S9790-IQC80-C1T 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}}