{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1150-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1150-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1150-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1150-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1150-IBZ50-A2, 32-bit ARM Cortex-M3 MCU, 50 MHz, 64 KB Flash, 16 KB RAM, 52 I/O, 108-BGA, -40 to 85°C, 2.25 V to 2.75 V supply.","salesMarkdown":"For sustainment programs already using this MCU, the immediate task is to secure lifetime buy quantities or qualify a form-fit-function replacement before the EOL notice arrives. ## 50 MHz Cortex-M3 — processing headroom for control and sensor fusion The ARM Cortex-M3 core runs at 50 MHz, placing this MCU in the mid-range tier for 32-bit microcontrollers. The 16 KB SRAM (organized as 16K x 8) is tight for heavy protocol stacks; expect to budget carefully if running a TCP/IP stack or USB host class driver alongside application code. The 64 KB Flash (64K x 8) stores firmware plus a modest bootloader for field updates. Connectivity covers I²C, IrDA, Microwire, QEI (quadrature encoder interface for motor position), SPI, SSI, and two UART/USART channels. The 52 general-purpose I/O pins, mapped to the 108-ball BGA, give enough GPIO for parallel LCD data buses or multiple chip selects without an external port expander. ## Package and layout — 108-BGA (10x10 mm) The 108-ball BGA measures 10x10 mm with a 0.8 mm ball pitch. That pitch is forgiving enough for a four-layer PCB with blind vias, but the BGA footprint still requires solder-paste stencil design and X-ray inspection after reflow.","metaTitle":"LM3S1150-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, NRND","metaDescription":"Texas Instruments LM3S1150-IBZ50-A2 32-bit ARM Cortex-M3 MCU, 50 MHz, 64 KB Flash, 16 KB RAM, -40 to 85°C, 108-BGA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 1000","Package":"Tray","RAM Size":"16K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Not For New Designs","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1150","Program Memory Size":"64KB (64K 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":"$23.8962","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1150-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3S1150-IBZ50-A2?","answer":"No official pin-compatible drop-in replacement is listed in the TI cross-reference. The Stellaris family has been superseded by TI's Tiva C Series (TM4C123x) and Hercules safety MCUs, but those are not pin-compatible. For a form-fit-function replacement, evaluate the TM4C123GH6PM in a similar BGA package — it offers a Cortex-M4F at 80 MHz with more Flash and RAM, but requires a PCB layout change and firmware migration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1150-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/LM3S1150-IBZ50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}