{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S628-IQN50-C2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S628-IQN50-C2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S628-IQN50-C2","factsUrl":"https://icboms.com/api/mcp/products/LM3S628-IQN50-C2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3S628-IQN50-C2, Stellaris ARM Cortex-M3S 600 series, 32-bit single-core MCU, 50 MHz, 32 KB Flash, 8 KB RAM, 28 I/O, 48-LQFP (7x7 mm), -40 to 85 °C, 3.0–3.6 V supply, tray.","salesMarkdown":"Connectivity options cover I²C, SPI, SSI, Microwire, and UART/USART interfaces. At 50 MHz the Cortex-M3 core delivers roughly 1.25 DMIPS/MHz, or about 62.5 DMIPS. That is enough for moderate control loops, protocol stacks (TCP/IP offload not needed), and real-time sensor fusion. The Flash memory requires zero wait states at this clock speed, so instruction fetch does not stall — a practical advantage over higher-clocked parts that need wait-state insertion. The Flash can hold a modest application — a bootloader, a few communication stacks (I²C, UART), and application code. The 8 KB RAM (organized as 8K x 8) supports a handful of buffers and a small RTOS heap. If your firmware needs more than 20 KB of code space or 4 KB of runtime data, this part will feel tight; consider a sibling with larger memory. No last-time-buy window or successor part number is recorded in the official lifecycle data. If you are designing a new product, look at TI's current Cortex-M4 or M0+ families in a 48-LQFP footprint for a pin-compatible path forward. ## Package and footprint — 48-LQFP (7x7 mm) It is a common footprint shared by many Stellaris and later TI ARM MCUs, which simplifies board reuse when migrating. The 28 I/O lines are available on the outer leads; no exposed pad is present, so thermal dissipation relies on the leadframe and board copper.","metaTitle":"Texas Instruments LM3S628-IQN50-C2 ARM Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S628-IQN50-C2 Stellaris ARM Cortex-M3 32-bit MCU, 50 MHz, 32KB Flash, 8KB RAM, 28 I/O, 48-LQFP, -40 to 85°C.","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 600","Package":"Tray","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"28","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S628","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.2877","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S628-IQN50-C2/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S628-IQN50-C2 obsolete?","answer":"Yes, Texas Instruments lists the LM3S628-IQN50-C2 as Obsolete. We can quote current availability against an RFQ."},{"question":"Does LM3S628-IQN50-C2 have a 10-bit ADC?","answer":"Yes, the LM3S628-IQN50-C2 includes an 8-channel 10-bit ADC. This is suitable for reading analog sensors, potentiometers, or low-speed signal acquisition up to the conversion rate supported by the 50 MHz core."},{"question":"What is the best replacement for LM3S628-IQN50-C2?","answer":"No official replacement is listed by Texas Instruments. For a pin-compatible upgrade path, consider TI's current Cortex-M4 or M0+ families in the same 48-LQFP (7x7 mm) footprint — for example, the TM4C123 series offers higher performance and larger memory while maintaining the same package outline. Verify the pinout and peripheral set against your design before committing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S628-IQN50-C2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S628-IQN50-C2 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}}