{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5632-IQR50-A0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5632-IQR50-A0","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5632-IQR50-A0","factsUrl":"https://icboms.com/api/mcp/products/LM3S5632-IQR50-A0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 5000 MCU, LM3S5632-IQR50-A0, 32-Bit Single-Core, 50MHz, 128KB Flash, 32K x 8 RAM, 64-LQFP.","salesMarkdown":"## Cortex-M3 at 50 MHz — what the core brings to the board The LM3S5632-IQR50-A0: On-chip memory: 128 KB of flash (128K x 8) and 32 KB of SRAM (32K x 8). The flash holds a moderate firmware stack; the SRAM leaves room for a RTOS heap and a few packet buffers. No external memory interface — the design lives within these limits. ## Peripheral mix — CAN, USB, and serial in a 64-pin package Connectivity includes CANbus, USB, I²C, SPI, SSI, UART/USART, IrDA, and Microwire — enough to talk to a motor drive over CAN, log data over USB, and poll sensors over SPI in one design. The 33 GPIOs share the 64-LQFP pins with these peripherals; check the pin mux before committing the schematic. A 6-channel 10-bit ADC is on-die, plus a PWM unit and a watchdog timer. The DMA engine moves data between peripherals and memory without CPU cycles — useful for streaming ADC readings into a buffer while the core handles the control loop. ## Package and rework — 64-LQFP, 10x10 mm, exposed pad That's a hand-solderable footprint under a microscope — the exposed thermal pad on the bottom needs a good solder joint to the board ground pour for heat sinking. The pin 1 chamfer is clear; orientation is unambiguous under a hot-air station. ## Lifecycle reality — NRND, still orderable For a repair or a production run on an existing board, the LM3S5632-IQR50-A0 remains orderable. New designs should look at the current Stellaris or TM4C family for a pin-compatible path.","metaTitle":"LM3S5632-IQR50-A0 Texas Instruments ARM Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S5632-IQR50-A0 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB flash, 32 KB RAM, 64-LQFP. NRND — order against RFQ.","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 5000","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"33","Core Processor":"ARM® Cortex®-M3","Package / Case":"64-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 6x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5632","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$30.8019","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e885aa79124afc8ed6451e5483413269.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5632-IQR50-A0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5632-IQR50-A0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5632-IQR50-A0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:54:12.484Z","lastPublished":"2026-07-21T02:54:12.484Z","indexable":true}}