{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1850-IBZ50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1850-IBZ50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1850-IBZ50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1850-IBZ50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series 32-bit MCU, LM3S1850-IBZ50-A2T, 50MHz, 256KB Flash, 32K x 8 RAM, 56 I/O, 108-LFBGA, -40°C to 85°C, Tape & Reel.","salesMarkdown":"## Stellaris ARM Cortex-M3 at 50 MHz — what this part delivers The Texas Instruments LM3S1850-IBZ50-A2T is a 32-bit ARM Cortex-M3 MCU from the Stellaris series, clocked at 50 MHz with 256 KB of Flash program memory and 32 KB of SRAM. The 56 GPIOs are brought out to a 108-ball BGA package (10x10 mm), and the part is rated for the -40°C to 85°C industrial temperature range. ## NRND — no longer recommended for new designs The LM3S1850-IBZ50-A2T carries a Not Recommended for New Designs (NRND) lifecycle status. This means Texas Instruments will continue to support existing production builds for a defined window, but the part is not intended for new design-ins. The 56 GPIOs, combined with the QEI and PWM peripherals, make this a natural fit for brushless DC motor control with encoder feedback — a common Stellaris deployment pattern.","metaTitle":"TI LM3S1850-IBZ50-A2T Stellaris ARM Cortex-M3, 50MHz, NRND","metaDescription":"Texas Instruments LM3S1850-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz, 256KB Flash, 32KB RAM, 108-BGA, -40C to 85C. NRND lifecycle. Sourced to order against RFQ.","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":"Tape & Reel (TR)","RAM Size":"32K 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":"56","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":"LM3S1850","Program Memory Size":"256KB (256K 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":"$17.4548","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/38b03106a267df1019dd902dd40d5344.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1850-IBZ50-A2T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S1850-IBZ50-A2T obsolete?","answer":"The LM3S1850-IBZ50-A2T is NRND (Not Recommended for New Designs), not fully discontinued. Production continues for existing customers, but new design-ins are not advised. The part is sourced to order against an RFQ through independent distribution."},{"question":"What is the replacement for LM3S1850-IBZ50-A2T?","answer":"No official replacement part number is listed in the lifecycle record. For a pin-compatible or functionally equivalent alternative, review the Stellaris family for a device with a similar peripheral set and BGA footprint, or contact us with your BOM for a cross-reference search."},{"question":"What does NRND mean for LM3S1850-IBZ50-A2T?","answer":"NRND means the manufacturer will not accept new design registrations for this part. Existing production orders are still supported, but the part is on a path toward end-of-life. Plan for a last-time buy or a migration to a replacement device."},{"question":"Where can I buy LM3S1850-IBZ50-A2T?","answer":"The LM3S1850-IBZ50-A2T is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm response."},{"question":"Can I use LM3S1850-IBZ50-A2T in a new design?","answer":"The NRND status means Texas Instruments does not recommend this part for new designs. For a production program that has not yet locked the BOM, select an active Stellaris or TM4C family device instead."},{"question":"What is LM3S1850-IBZ50-A2T's listed speed?","answer":"The core is rated for 50 MHz operation. This is the maximum clock frequency for the ARM Cortex-M3 processor on this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1850-IBZ50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1850-IBZ50-A2T 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}}