{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1625-IQR50-A0T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1625-IQR50-A0T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1625-IQR50-A0T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1625-IQR50-A0T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series microcontroller, LM3S1625-IQR50-A0T, 50MHz, 128KB Flash, 32K x 8 RAM, 64-LQFP, -40°C to 85°C.","salesMarkdown":"## Cortex-M3 core with 50 MHz ceiling — what that means for the firmware engineer The LM3S1625-IQR50-A0T is a Stellaris® ARM® Cortex®-M3S 1000 series MCU from Texas Instruments, clocked at 50 MHz. That 50 MHz is the CPU clock ceiling — the flash controller keeps pace without wait states at this speed, so the 128 KB on-chip flash delivers single-cycle instruction fetches for most of the code footprint. The 32K x 8 SRAM (32 KB) leaves room for a moderate RTOS heap and stack. With the HAL and a lightweight kernel, expect about 20 KB free for application data structures. ## NRND — plan the last-time-buy window Texas Instruments lists this part as NRND (Not Recommended for New Designs). That means it is still orderable for existing production but TI will not invest in extended availability. For a kitting lead managing a BOM line that uses this MCU, the NRND flag triggers a last-time-buy (LTB) evaluation. If the build forecast extends beyond 12–18 months, secure the LTB quantity now through a quoted order — availability and pricing confirmed at RFQ. ## Peripheral set and board integration On-chip peripherals include brown-out detect/reset, DMA, POR, PWM, and a watchdog timer — enough for a motor-control or sensor-fusion node without an external supervisor IC. The 6-channel 10-bit ADC samples at rates adequate for low-speed feedback loops. Connectivity covers I²C, IrDA, Microwire, SPI, SSI, and UART/USART — the SPI and UART ports handle most sensor and display interfaces. 33 GPIOs are available in the 64-LQFP package. The 64-LQFP (10x10 mm) package with 0.5 mm pitch routes comfortably on a 2-layer board for the inner rows; a 4-layer stack-up simplifies fan-out for the full pin set. ## Temperature grade and operating environment This covers most factory-floor, outdoor telecom, and automotive-cabin applications — the internal oscillator is trimmed across this range, so no external crystal is needed for UART baud-rate generation.","metaTitle":"Texas Instruments LM3S1625-IQR50-A0T ARM Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S1625-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 32Kx8 RAM, 64-LQFP. NRND status. Sourced to order.","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, 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":"$8.5058","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1625-IQR50-A0T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1625-IQR50-A0T?","answer":"The Stellaris family includes other Cortex-M3 devices in the same 64-LQFP footprint, but the exact flash/RAM combination and peripheral set differ — verify the BOM position against the target part's datasheet before substituting."},{"question":"What compliance documentation does Texas Instruments provide for LM3S1625-IQR50-A0T?","answer":"Texas Instruments provides RoHS and REACH compliance documentation for this part. The device is lead-free and RoHS-compliant per TI's standard green packaging. No UL or IEC certification is listed for this microcontroller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1625-IQR50-A0T","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-A0T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:43:22.883Z","lastPublished":"2026-07-21T02:43:22.883Z","indexable":true}}