{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S618-EQN50-C2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S618-EQN50-C2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S618-EQN50-C2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S618-EQN50-C2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 600 series 32-bit MCU, LM3S618-EQN50-C2T, 50MHz core, 32KB Flash, 8KB RAM, 30 I/O, 6x10b ADC, 3V-3.6V supply, -40°C to 105°C, 48-LQFP.","salesMarkdown":"TI is not actively pushing this into new sockets, though existing production runs may still be fulfilled through the channel. For a BOM that already specifies this part, the sourcing strategy shifts to securing inventory before the last-time-buy window closes or relying on independent distribution for bridge quantities. This is not an obsolete part today, but the clock is running — any new design should evaluate a current-production alternate before committing the layout. ## Memory sizing — 32 KB Flash, 8 KB RAM This part is sized for a dedicated control task — a single protocol stack (UART/SPI-based), a PID loop, and a handful of configuration parameters — not a Linux-class application. The 8 KB RAM will be tight if you are buffering large serial packets or running a full RTOS with multiple stacks; budget carefully if your firmware uses dynamic allocation. The Flash endurance is not stated here, but the Stellaris family typically supports 100k write/erase cycles, adequate for field-updatable firmware if wear-leveling is implemented. ## Connectivity and peripherals for sensor and motor interfaces The LM3S618 integrates UART, SPI, SSI, and Microwire serial interfaces, plus a Quadrature Encoder Interface (QEI) for reading motor position or rotary encoders. The 6-channel 10-bit ADC samples analog signals like thermistor inputs or current-sense voltages. The Brown-out Detect/Reset and POR circuits mean the MCU starts cleanly on power-up and resets if the supply dips — no external supervisor needed for basic reliability. An internal oscillator is on-die, so a crystal is optional for applications that can tolerate the internal accuracy. ## Package and footprint — 48-LQFP (7x7 mm) The 0.5 mm pitch means the PCB fab needs standard capability — no micro-vias or blind vias required.","metaTitle":"TI LM3S618-EQN50-C2T Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S618-EQN50-C2T 32-bit ARM Cortex-M3 MCU, 50MHz core, 32KB Flash, 8KB RAM, 30 I/O, -40°C to 105°C, 48-LQFP.","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 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":"Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"30","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 6x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S618","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":"$3.5911","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/270b6da82dfcb111c65a772460187315.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S618-EQN50-C2T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S618-EQN50-C2T obsolete?","answer":"It is not yet marked obsolete, but TI advises against using it in new product designs. Existing production can still be sourced, but the window for factory orders may be limited."},{"question":"Does LM3S618-EQN50-C2T have an internal oscillator?","answer":"Yes, the LM3S618 includes an internal oscillator, so a crystal is not required for basic operation. For applications needing tighter timing accuracy, an external clock source can be used."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S618-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/LM3S618-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}}