{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1816-IQR50-C1T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1816-IQR50-C1T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1816-IQR50-C1T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1816-IQR50-C1T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 microcontroller, LM3S1816-IQR50-C1T, 50 MHz, 256 KB flash, 32 KB RAM, 64-LQFP, industrial temp.","salesMarkdown":"## 50 MHz Cortex-M3 with 256 KB flash — what it means for a replacement design The LM3S1816-IQR50-C1T: That flash-to-RAM ratio suits control applications with moderate data buffering — think a motor-drive commutation loop or a multi-protocol gateway running a lightweight TCP/IP stack. The 33 GPIOs and 8-channel 10-bit ADC cover typical sensor and discrete-I/O needs without an external expander. ## Obsolete — what that means for procurement Texas Instruments lists the LM3S1816-IQR50-C1T as Obsolete. No last-time-buy window remains open. Because the Stellaris family has been migrated to the Tiva C series, a board redesign targeting a Tiva TM4C123 or similar Cortex-M4 part is the typical migration path. ## Industrial temperature and peripheral set The internal oscillator and brown-out detect reduce external component count in a compact control board. Connectivity includes I²C, SPI, SSI, UART/USART, and IrDA — a typical mix for interfacing with serial ADCs, external EEPROM, or a radio module. The DMA controller offloads the CPU during peripheral transfers, which matters when the 50 MHz core is also running a protocol stack.","metaTitle":"Texas Instruments LM3S1816-IQR50-C1T Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S1816-IQR50-C1T Stellaris ARM Cortex-M3 MCU, 50 MHz, 256 KB flash, 32 KB RAM, industrial temp. Obsolete — sourced to order.","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 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":"Obsolete","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1816","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"1.08V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.4000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/28aaa1ee4dc83ca313d65bff1ae2b85b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1816-IQR50-C1T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the LM3S1816-IQR50-C1T?","answer":"There is no official pin-compatible successor from Texas Instruments. The Stellaris family has been superseded by the Tiva C series (TM4C123x), which uses a Cortex-M4 core and a different peripheral map. A board layout revision is required for migration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1816-IQR50-C1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1816-IQR50-C1T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:44:17.586Z","lastPublished":"2026-07-21T02:44:17.586Z","indexable":true}}