{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S9781-IBZ80-C5T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S9781-IBZ80-C5T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S9781-IBZ80-C5T","factsUrl":"https://icboms.com/api/mcp/products/LM3S9781-IBZ80-C5T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 9000 series LM3S9781-IBZ80-C5T, 32-Bit Single-Core MCU, 80MHz, 128KB (128K x 8) FLASH, 64K x 8 RAM, 65 I/O, 108-LFBGA, -40°C~85°C.","salesMarkdown":"No last-time-buy window remains open through the factory channel. ## 80 MHz Cortex-M3 with Ethernet, CAN, and USB OTG The 65 GPIOs are mapped across a 108-ball BGA (10x10 mm), which keeps the board area tight but demands a 4-layer PCB for fanout. The connectivity set is what sets this part apart from a generic Cortex-M3: Ethernet MAC+PHY, two CAN 2.0B controllers, USB OTG (Host/Device), plus multiple UART, SPI, I²C, and SSI serial interfaces. ## Industrial temperature and on-chip peripherals The core runs from a 1.235 V to 1.365 V supply; the I/O bank is 3.3 V tolerant. On-chip peripherals include a 16-channel 10-bit ADC, PWM timers, a watchdog timer, brown-out detect, power-on reset, DMA, and an I²S audio interface — covering motor-control feedback, sensor acquisition, and human-machine interface audio. The 108-ball BGA (10x10 mm, 0.8 mm pitch) is a fine-pitch package that requires micro-via or via-in-pad for full breakout of the 65 I/O and the Ethernet/USB differential pairs. Surface-mount only; no socket option exists for this BGA.","metaTitle":"LM3S9781-IBZ80-C5T Stellaris Cortex-M3 MCU, 80MHz","metaDescription":"LM3S9781-IBZ80-C5T is an obsolete Stellaris ARM Cortex-M3 MCU with 80MHz core, 128KB Flash, 64KB SRAM, 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":"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":"65","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"A/D 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S9781","Program Memory Size":"128KB (128K 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":"https://cdn.icboms.com/aa8e08acec168565ddfe0ed524320717.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LM3S9781-IBZ80-C5T?","answer":"The LM3S9781-IBZ80-C5T is obsolete and no longer available through the factory channel. We source it through independent distribution — submit an RFQ for current availability and pricing, which we confirm at quote time."},{"question":"Is LM3S9781-IBZ80-C5T obsolete?","answer":"There is no official replacement order code from TI; for production or repair, the part is available through surplus and broker channels."},{"question":"Does LM3S9781-IBZ80-C5T have Ethernet?","answer":"Yes, the LM3S9781-IBZ80-C5T includes a 10/100 Ethernet MAC+PHY controller as part of its connectivity set, alongside CAN, USB OTG, and multiple serial interfaces."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S9781-IBZ80-C5T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S9781-IBZ80-C5T 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}}