{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1608-EQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1608-EQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1608-EQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1608-EQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series microcontroller, LM3S1608-EQC50-A2T, 50MHz, 128KB flash, 32Kx8 RAM, 100-LQFP, -40 to 105°C.","salesMarkdown":"## Core architecture and memory fit The LM3S1608-EQC50-A2T: Built around a 32-bit ARM Cortex-M3 core running at 50 MHz, this MCU delivers a deterministic interrupt response suited for control-loop applications where timing closure matters — the Cortex-M3 tail-chaining reduces ISR latency to 12 cycles, avoiding jitter in PWM or sensor-sampling routines. On-chip memory comprises 128 KB of flash (128K x 8) and 32 KB of SRAM (32K x 8) — enough to hold a moderate application stack and a real-time OS kernel with ~80 KB left for code after the HAL and driver overhead. On-chip data conversion is handled by an 8-channel, 10-bit ADC — adequate for reading analog sensors like thermistors or potentiometers at sample rates typical of motor-control or instrumentation loops. Built-in brown-out detect/reset, POR, PWM, and a watchdog timer reduce external supervision ICs; the internal oscillator saves a crystal on the BOM when timing accuracy of ±1% is acceptable. Housed in a 100-pin LQFP (14x14 mm body), the 0.5 mm pitch demands a 4-layer PCB for reliable fan-out of the inner rows — two-layer boards will struggle to route all 52 I/O plus the power and ground nets without via congestion. The 100-LQFP footprint is common across the Stellaris family, but a board spin may be required if migrating to a different TI MCU series.","metaTitle":"LM3S1608-EQC50-A2T Texas Instruments MCU, 50MHz, 128KB Flash","metaDescription":"Texas Instruments LM3S1608-EQC50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 32Kx8 RAM, 100-LQFP. Obsolete — sourced to order against RFQ.","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, POR, PWM, WDT","Connectivity":"I2C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1608","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fea52b5bfd4d78fca136e462a41458b8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1608-EQC50-A2T?","answer":"No official pin-compatible successor is recorded on this line. The Stellaris family includes other Cortex-M3 parts in 100-LQFP, but pin compatibility varies by exact base product number — confirm the pinout against the target BOM position before specifying."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1608-EQC50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1608-EQC50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:42:36.966Z","lastPublished":"2026-07-21T02:42:36.966Z","indexable":true}}