{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1625-IQR50-A0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1625-IQR50-A0","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1625-IQR50-A0","factsUrl":"https://icboms.com/api/mcp/products/LM3S1625-IQR50-A0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series LM3S1625-IQR50-A0, 32-Bit Single-Core MCU, 50MHz, 128KB Flash, 32K x 8 RAM, I²C/SPI/UART/IrDA, 33 I/O, 64-LQFP, -40°C~85°C.","salesMarkdown":"## 50 MHz Cortex-M3 with 128 KB Flash — mid-range control workhorse The 33 GPIO lines in a 64-LQFP package give reasonable headroom for parallel LCD data buses or multiple encoder inputs. ## Industrial temperature grade — factory-floor and outdoor telecom ready The internal oscillator means one less external crystal to fail in vibration-heavy environments, though the accuracy will drift with temperature — if you need a precision timebase, plan to use an external clock source on the oscillator input. Texas Instruments has not issued a last-time-buy notice as of the current record, but the NRND flag signals that this part is on a path toward eventual discontinuation. For a new design, you should evaluate a pin-compatible successor within the Stellaris family or a current-production Cortex-M3/M4 from TI's Tiva C Series. For an existing BOM that already qualifies this MCU, the NRND status means you can still source it through independent distribution on a quoted-to-order basis — but the window for last-time-buy procurement may open without much notice, so securing a lifetime buy or qualifying an alternate is worth planning now. ## Supply rail note — 2.5 V nominal, not 3.3 V If the rest of the board is 3.3 V logic, the GPIO pins are not 5 V tolerant and will need level translation for any 3.3 V peripheral. A dedicated 2.5 V LDO with at least 100 mA headroom is the straightforward fix — the LM3S1625's core draw plus I/O switching current typically stays under 80 mA at 50 MHz, so a 150 mA rated regulator like the TPS73625 handles it cleanly.","metaTitle":"LM3S1625-IQR50-A0 Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"LM3S1625-IQR50-A0 is a 32-bit ARM Cortex-M3 MCU from the Stellaris series, 50 MHz, 128 KB Flash, 32 KB RAM, 64-LQFP, -40°C to 85°C.","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":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"33","Core Processor":"ARM® Cortex®-M3","Package / Case":"64-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 6x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1625","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.3768","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1625-IQR50-A0/alternatives.json"},"ai":{"faq":[{"question":"Is the LM3S1625-IQR50-A0 obsolete?","answer":"It is not yet formally discontinued, but TI has flagged it for phase-out. For new designs, evaluate a current-production Cortex-M3 or M4 alternate."},{"question":"What is the replacement for the LM3S1625-IQR50-A0?","answer":"For a pin-compatible path, look at TI's Tiva C Series ARM Cortex-M4F devices in the same 64-LQFP footprint — they share the 2.5 V supply rail and similar peripheral set, but verify the ADC channel count and package pinout against your layout before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1625-IQR50-A0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1625-IQR50-A0 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}}