{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1601-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1601-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1601-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1601-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series, LM3S1601-EQC50-A2, 32-bit single-core MCU, 50 MHz, 128 KB Flash, 32 KB SRAM, 60 I/O, 100-LQFP, -40 to 105 °C","salesMarkdown":"## Cortex-M3 at 50 MHz — flash and RAM budget check The LM3S1601-EQC50-A2 is a Texas Instruments Stellaris ARM Cortex-M3S 1000 MCU running at 50 MHz with 128 KB of on-chip Flash and 32 KB of SRAM. That 128 KB Flash is what you partition for the bootloader, the application binary, and any constant lookup tables — after the HAL and a lightweight RTOS you are left with roughly 90 KB for the application code. The 32 KB SRAM splits between stack, heap, and DMA buffers; if your ISR stack plus the main loop data exceeds that, you stall. Sixty I/O lines in the 100-LQFP package give you enough headroom for a parallel display bus, a keypad matrix, and a few sensor interfaces. The internal oscillator saves an external crystal in cost-sensitive builds, though you trade clock accuracy for BOM simplicity. No official successor is published. The 100-LQFP package is a common footprint; date codes and moisture sensitivity should be confirmed at quote time.","metaTitle":"LM3S1601-EQC50-A2 Texas Instruments ARM Cortex-M3 MCU 50MHz","metaDescription":"Texas Instruments LM3S1601-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 128KB Flash, 32KB RAM, 100-LQFP. 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 1000","Package":"Tray","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":"60","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1601","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/0daa3ba29b286b66a18a2cc1497c3f74.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest replacement for LM3S1601-EQC50-A2?","answer":"No official pin-compatible replacement is listed by Texas Instruments for the LM3S1601-EQC50-A2. A redesign to a current Stellaris or Tiva C Series part would require evaluating the peripheral set and memory map. The 100-LQFP footprint is common across the family, but the supply voltage (2.25 V to 2.75 V,) is specific — verify the new part's Vcc range."},{"question":"Does the LM3S1601-EQC50-A2 have a firmware library?","answer":"The Stellaris family was supported by the StellarisWare driver library from Texas Instruments. That library is now archived but still available for download. It includes peripheral drivers and example code for the Cortex-M3 core. The boot ROM does not steal Flash — the 128 KB is fully available to the user application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1601-EQC50-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1601-EQC50-A2 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}}