{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5791-IQC80-C0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5791-IQC80-C0","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5791-IQC80-C0","factsUrl":"https://icboms.com/api/mcp/products/LM3S5791-IQC80-C0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris LM3S5791-IQC80-C0, ARM Cortex-M3 32-bit MCU, 80 MHz, 128 KB Flash, 64 KB SRAM, USB OTG, dual CAN, LIN, 16x10b ADC, 72 I/O, 100-LQFP, 1.08–1.32 V, -40°C to 85°C, Tray.","salesMarkdown":"The LM3S5791-IQC80-C0: The 16-channel 10-bit ADC and quadrature encoder interface (QEI) suit motor-drive feedback and sensor acquisition. The 80 MHz core delivers roughly 1.25 DMIPS/MHz, giving about 100 DMIPS of headroom for control loops, protocol stacks, and real-time tasks. Combined with the 64 KB SRAM, this part can handle a moderate RTOS, a TCP/IP stack over Ethernet (via external PHY on the EBI/EMI), and dual CAN channels without running out of memory. This part carries an official obsolete status. For a production BOM that already qualifies this MCU, the only viable channel is the independent distribution market — surplus, new-old-stock, or broker inventory. If you are designing a new board, you will want to evaluate a current-production ARM Cortex-M3 or Cortex-M4 part with similar peripheral mapping. The LM3S5791-IQC80-C0 is supplied in a 100-pin LQFP with a 14x14 mm body (0.5 mm pitch). It is a surface-mount package, tray shipping. The footprint is a standard JEDEC 100-LQFP; no exotic pad geometry.","metaTitle":"LM3S5791-IQC80-C0 ARM Cortex-M3 MCU, 80 MHz, 128 KB Flash","metaDescription":"Texas Instruments Stellaris LM3S5791-IQC80-C0 ARM Cortex-M3 MCU at 80 MHz with 128 KB Flash, 64 KB SRAM, USB OTG, dual CAN, 16-ch 10-bit ADC.","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 5000","Package":"Tray","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, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"72","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":"LM3S5791","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)":"1.08V ~ 1.32V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/603e2ee396c884705197257f18e9e4d3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5791-IQC80-C0/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S5791-IQC80-C0?","answer":"No direct pin-compatible replacement is listed under the LM3S5791 base number. For new designs, evaluate a current-production ARM Cortex-M3 or Cortex-M4 MCU from TI's Tiva C Series or a comparable vendor with similar peripheral set (USB OTG, dual CAN, LIN, 10-bit ADC)."},{"question":"What is LM3S5791-IQC80-C0's listed speed?","answer":"The core is rated at 80 MHz. That is the maximum clock frequency for the ARM Cortex-M3 in this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5791-IQC80-C0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5791-IQC80-C0 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}}