{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S628-EQN50-C2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S628-EQN50-C2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S628-EQN50-C2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S628-EQN50-C2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3S628-EQN50-C2T, Stellaris ARM Cortex-M3S 600 series, 32-bit single-core MCU at 50MHz, 32KB Flash, 8KB RAM, 28 I/O, 3.0–3.6V, 48-LQFP, -40 to 105°C, Tape & Reel.","salesMarkdown":"## Obsolete — plan your last-time-buy or alternate now ## 50 MHz Cortex-M3 — what the core speed means for your application The 50 MHz ARM Cortex-M3 core places this MCU in the mid-range performance tier for control-loop and sensor-fusion tasks. At this clock rate, the single-cycle multiply and hardware divide handle PID loops, encoder decoding, and basic digital filtering without needing a separate DSP. The 32-bit data path processes 32-bit sensor words and 32-bit timer values in one cycle, which matters when you are counting edges from a 10,000-line encoder or accumulating ADC samples without overflow. For a design that needs deterministic interrupt response — the Cortex-M3 tail-chaining and late-arrival features keep jitter under a dozen cycles — this core is a known quantity. ## Memory budget: 32 KB Flash, 8 KB RAM The Flash is sufficient for a modest RTOS kernel (FreeRTOS or TI-RTOS), a USB stack, and application code for a motor drive or sensor hub — but not for a GUI or file system. The 8 KB RAM must be budgeted carefully: a 1 KB stack, 2 KB for communication buffers, and the rest for global variables and peripheral DMA descriptors. If your application needs over-the-air firmware updates, the 32 KB Flash leaves little room for a dual-bank bootloader; consider a larger Flash sibling in the Stellaris family. The 8-channel 10-bit ADC samples at rates suitable for current sensing and temperature monitoring, not high-speed data acquisition. Brown-out detect and POR are integrated, so external reset supervision is optional for cost-sensitive boards. ## Package and footprint: 48-LQFP (7x7 mm)","metaTitle":"TI LM3S628-EQN50-C2T Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S628-EQN50-C2T Stellaris ARM Cortex-M3S 600 series 32-bit MCU. 50MHz core, 32KB Flash, 8KB RAM, 28 I/O, -40 to 105°C. Request quote.","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":"Tape & Reel (TR)","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":"Obsolete","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~105°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S628-EQN50-C2T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S628-EQN50-C2T obsolete?","answer":"Yes, the LM3S628-EQN50-C2T carries an Obsolete lifecycle status. Texas Instruments has ended production, and no factory orders are possible. Any procurement must go through the surplus and broker channel."},{"question":"What is the replacement for LM3S628-EQN50-C2T?","answer":"A functionally equivalent replacement would require a pin-compatible alternate within the Stellaris ARM Cortex-M3 family or a migration to a current TI MCU family such as the TM4C series. Pin compatibility must be verified against the target PCB footprint and peripheral set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S628-EQN50-C2T","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-EQN50-C2T 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}}