{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1512-EQC25-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1512-EQC25-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1512-EQC25-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1512-EQC25-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 microcontroller, LM3S1512-EQC25-A2, 32-bit single-core, 25 MHz, 96 KB FLASH, 64K x 8 RAM, 58 I/O, 100-LQFP (14x14 mm), -40°C to 105°C.","salesMarkdown":"## 25 MHz Cortex-M3 with 96 KB flash — memory headroom for the firmware The LM3S1512-EQC25-A2: The 96 KB flash is the binding constraint for the application firmware; the 64 KB SRAM provides enough headroom for moderate data buffers and a real-time operating system heap. For a motor-control or sensor-fusion workload, the flash fills first — budget the code footprint before the BOM commit. The 105°C ceiling covers outdoor enclosures, engine-bay electronics, and factory-floor panels without active cooling — the internal oscillator and flash retention are characterised across the full span. The 2.25 V to 2.75 V supply window is narrow; a 3.3 V rail needs an external LDO stepping down to 2.5 V, and the LDO's dropout and PSRR become part of the power budget. ## 100-LQFP package — board integration notes Housed in a 100-LQFP (14x14 mm, 0.5 mm pitch). The fine pitch forces a 4-layer PCB for fan-out — two-layer boards break out only the outer rows of pins. The exposed paddle at the package centre must be soldered to a thermal via array under the MCU; without it, the junction-to-ambient thermal resistance rises above the datasheet figure and the 105°C limit becomes harder to hold. The 58 general-purpose I/O are multiplexed with the peripheral set (I²C, SPI, UART, PWM, QEI), so pin assignment locks the available function mix. Connectivity includes I²C, IrDA, Microwire, QEI, SPI, SSI, and UART/USART — enough serial interfaces for a multi-sensor node or a small drive controller. The QEI (quadrature encoder interface) is specific to motor-feedback applications; the PWM module with brown-out detect and watchdog timer covers the basic safety monitoring for an unregulated power source. The 2x10-bit ADC (two converters, 10-bit resolution) samples analog feedback at moderate rates — suitable for current sensing or potentiometer position, not high-speed data acquisition. ## Obsolete — sourcing through independent surplus channels Texas Instruments lists the LM3S1512-EQC25-A2 as Obsolete. For a BOM line that depends on this MCU, a board spin to a current-generation Cortex-M4 or M0+ part is the long-term migration path; the Stellaris family was superseded by the Tiva and MSP432 lines, neither of which is pin-compatible.","metaTitle":"Texas Instruments LM3S1512-EQC25-A2 ARM Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S1512-EQC25-A2, Stellaris ARM Cortex-M3 MCU. 25 MHz, 96 KB flash, 64 KB SRAM, 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":"25MHz","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, QEI, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"58","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Obsolete","Data Converters":"A/D 2x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1512","Program Memory Size":"96KB (96K 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/c8ae461070bc45496dbfd07155db13dd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1512-EQC25-A2 in the Stellaris family?","answer":"No pin-compatible alternative is listed on the official record. The Stellaris family was discontinued and replaced by the Tiva C Series, which uses a different pinout and supply voltage. A board redesign is required for any current-generation replacement."},{"question":"What is LM3S1512-EQC25-A2's listed speed and memory configuration?","answer":"The core runs at 25 MHz. On-chip memory is 96 KB of flash and 64 KB of SRAM (64K x 8). The flash is the binding constraint for firmware size."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1512-EQC25-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/LM3S1512-EQC25-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:41:53.324Z","lastPublished":"2026-07-21T02:41:53.324Z","indexable":true}}