{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1937-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1937-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1937-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1937-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 MCU, LM3S1937-EQC50-A2, 32-Bit Single-Core, 50MHz, 256KB Flash, 64K x 8 RAM, 100-LQFP (14x14), -40°C~105°C, Tray.","salesMarkdown":"## Core and memory — what the 50 MHz and 256 KB flash mean for a control-loop application The LM3S1937-EQC50-A2: The 50 MHz ARM Cortex-M3 core delivers roughly 62.5 MIPS (1.25 DMIPS/MHz) — enough to run a sensor-fusion loop, a Modbus RTU stack, and a PID controller in a single tick without a scheduler fight. 256 KB of on-chip flash (256K x 8) and 64 KB SRAM (64K x 8) give the firmware engineer room for a full HAL, a real-time kernel, and a 10-15 KB data buffer before the memory map starts squeezing. The 2.25 V to 2.75 V supply rail means the part runs off a single 2.5 V LDO — a common intermediate rail in 3.3 V systems — but the core voltage is tight enough that a 2.5 V ±2 % regulator is safer than a 2.5 V ±5 % one. ## Package and board-fit — 100-LQFP with a 14x14 mm body 100-LQFP (14x14 mm) with 0.50 mm pitch — the outer rows break out on a two-layer board, but the inner power/ground pins need at least a four-layer stack to keep the fan-out clean and the return paths short. Surface-mount only — no socket option. The 56 I/O lines fan out to the perimeter pads, so the decoupling cap placement under the body is blocked; plan for eight to ten 100 nF caps on the perimeter within 5 mm of the VDD/VSS pairs. ## Industrial temperature grade — -40 to +105 °C A motor-drive controller in a NEMA 4X enclosure on a hot factory floor stays within the envelope; an under-hood ECU at 110 °C ambient does not.","metaTitle":"LM3S1937-EQC50-A2 Stellaris Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S1937-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 256 KB flash, 64 KB RAM, -40 to +105 °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 1000","Package":"Tray","RAM Size":"64K 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":"56","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 4x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1937","Program Memory Size":"256KB (256K 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/1410109faa94f8575689d533cdece4b5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the LM3S1937-EQC50-A2's speed and memory configuration?","answer":"The flash is 256K x 8 organized, and the SRAM is 64K x 8."},{"question":"What peripherals are integrated on the LM3S1937-EQC50-A2?","answer":"On-chip peripherals include brown-out detect, POR, PWM, WDT, plus I²C, IrDA, Microwire, SPI, SSI, and UART/USART connectivity. A 4-channel 10-bit A/D converter handles analog inputs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1937-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/LM3S1937-EQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:45:33.037Z","lastPublished":"2026-07-21T02:45:33.037Z","indexable":true}}