{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S8730-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S8730-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S8730-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S8730-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 8000 series 32-bit MCU, LM3S8730-IBZ50-A2, 50MHz, 128KB FLASH, 64KB SRAM, Ethernet/CANbus, 108-LFBGA, -40°C to 85°C.","salesMarkdown":"Texas Instruments lists the LM3S8730-IBZ50-A2 as obsolete. This means the manufacturer no longer produces it, and no official last-time-buy window remains open. Sourcing now runs through independent distribution — quantities are lot-specific and confirmed at RFQ. A board-level redesign may be required for a functional replacement. The LM3S8730-IBZ50-A2 is a 32-bit single-core ARM Cortex-M3 MCU clocked at 50 MHz. The 128 KB on-chip flash and 64 KB SRAM provide enough headroom for a moderate application stack plus an RTOS footprint — the 64 KB SRAM leaves roughly 30–40 KB free after a typical HAL and scheduler load, depending on peripheral buffers. Program memory is flash, so firmware updates in the field are possible, but the 100,000-cycle endurance typical of this generation means wear-leveling is not critical for most product lifetimes. ## Connectivity and peripheral set This MCU integrates Ethernet MAC and CANbus controllers alongside I²C, SPI, SSI, UART/USART, IrDA, and Microwire interfaces. The Ethernet and CAN pair makes it a natural fit for industrial gateway or building-automation nodes that bridge a fieldbus to an IP network. On-chip peripherals include brown-out detect, POR, PWM, and a watchdog timer — enough for standalone control without an external supervisor IC in many designs. 32 general-purpose I/O pins are available, which constrains the number of external peripherals that can be connected without a port expander. ## Package and board-fit: 108-BGA (10x10 mm) The LM3S8730-IBZ50-A2 comes in a 108-LFBGA package (supplier device package 108-BGA, 10x10 mm). This is a fine-pitch BGA — the 0.50 mm ball pitch demands a 4-layer PCB for fan-out; a 2-layer board will not break out the inner rows reliably. Surface-mount only.","metaTitle":"TI LM3S8730-IBZ50-A2 ARM Cortex-M3 MCU, 50MHz, 128KB Flash","metaDescription":"Texas Instruments LM3S8730-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 64KB SRAM, Ethernet/CAN, 108-BGA. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 8000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"32","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S8730","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)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S8730-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the LM3S8730-IBZ50-A2's core speed and memory?","answer":"50 MHz ARM Cortex-M3 core with 128 KB flash and 64 KB SRAM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S8730-IBZ50-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S8730-IBZ50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:57:07.557Z","lastPublished":"2026-07-21T02:57:07.557Z","indexable":true}}