{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S2U93-IQC80-A1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S2U93-IQC80-A1","canonicalUrl":"https://icboms.com/texas-instruments/LM3S2U93-IQC80-A1","factsUrl":"https://icboms.com/api/mcp/products/LM3S2U93-IQC80-A1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 2000 series microcontroller, LM3S2U93-IQC80-A1, 32-bit single-core, 80MHz, 384KB Flash, 96KB RAM, 100-LQFP.","salesMarkdown":"## Cortex-M3 with 384 KB flash and 96 KB RAM The Texas Instruments LM3S2U93-IQC80-A1 is a Stellaris-series ARM Cortex-M3 MCU running at 80 MHz. The 32-bit Cortex-M3 core handles single-cycle multiply and hardware divide, and the 80 MHz clock means the core can sustain around 1.25 DMIPS/MHz — roughly 100 DMIPS — before the flash wait-states start to bite. Step through the boot ROM first to confirm the flash accelerator settings; the default prefetch buffer makes a difference on random-access code. This part is now classified as Obsolete by Texas Instruments. The LM3S2U93 brings a CANbus controller, an external bus interface (EBI/EMI) for parallel memory or FPGA glue, plus the usual I²C, SPI/SSI, and UART/USART serial ports. The Microwire and IrDA support are legacy-friendly but still useful if the board mates with an older sensor or a remote-control receiver. 67 GPIOs in the 100-LQFP package leave most pins free after the serial interfaces are allocated. On-chip peripherals include a DMA engine, a PWM module, an I²S audio interface, a watchdog timer, and brown-out detect with POR. The 16-channel 10-bit ADC samples at up to 1 Msps — enough for a joystick, a few potentiometers, or current-sense inputs on a motor-control board, though the 10-bit resolution limits precision below what a 12-bit part would deliver. The internal oscillator saves a crystal on low-cost designs, but the accuracy is typically ±1% across temperature — the errata sheet should be checked if the CAN or USB timing requires a tighter clock source. ## Package, supply, and temperature range The exposed pad (if present on this variant) should be stitched to the ground plane with at least nine vias to keep the thermal impedance below 40 °C/W. The I/O ring runs from the same Vdd or an external 3.3 V rail depending on the pin group; the datasheet's power-sequence diagram should be followed to avoid latch-up on power-up. The 100-LQFP package is MSL-3 typical; bake before reflow if the moisture-barrier bag is punctured.","metaTitle":"Texas Instruments LM3S2U93-IQC80-A1 Cortex-M3 MCU, 80MHz","metaDescription":"Texas Instruments Stellaris LM3S2U93-IQC80-A1 ARM Cortex-M3 MCU, 80MHz, 384KB Flash, 96KB RAM, 100-LQFP. Obsolete, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"80MHz","Series":"Stellaris® ARM® Cortex®-M3S 2000","Package":"Tray","RAM Size":"96K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"67","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S2U93","Program Memory Size":"384KB (384K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.235V ~ 1.365V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the LM3S2U93-IQC80-A1?","answer":"No official pin-compatible successor is listed by Texas Instruments for this order code. The Stellaris family has been superseded by the Tiva C series, but the pinout and register map differ. A BOM redesign or a board spin is required to migrate to a current-production part."},{"question":"What compliance documentation does Texas Instruments provide for the LM3S2U93-IQC80-A1?","answer":"Texas Instruments provides RoHS and REACH compliance declarations for the LM3S2U93-IQC80-A1, as well as a material content disclosure. The part is lead-free and compatible with lead-free reflow profiles. No UL or IEC certification is listed on the standard product page."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S2U93-IQC80-A1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S2U93-IQC80-A1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:52:49.710Z","lastPublished":"2026-07-21T02:52:49.710Z","indexable":true}}