{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1133-EQC50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1133-EQC50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1133-EQC50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1133-EQC50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series microcontroller, LM3S1133-EQC50-A2T, 32-bit single-core, 50 MHz, 64 KB flash, 16 KB RAM, 100-LQFP, -40 to 105°C.","salesMarkdown":"## Core specs and memory budget for a firmware image The LM3S1133-EQC50-A2T runs an ARM Cortex-M3 core at 50 MHz — the DMIPS ceiling is set by the flash wait-state profile at this clock, not the core itself. On-chip memory is 64 KB flash (64K x 8) and 16 KB SRAM (16K x 8), which together define the firmware image size and runtime heap/stack budget. Operating temperature spans -40°C to 105°C, the industrial-grade range that covers engine-bay and outdoor enclosure deployments without active cooling. Supply voltage is 2.25 V to 2.75 V on a single rail — no separate I/O supply, so the core and GPIO levels track together. Connectivity includes I²C, SPI, SSI, UART/USART, IrDA, and Microwire — enough serial bus options to interface with external sensors, memory, and display modules without an external bridge chip. 44 GPIOs are available on the 100-LQFP package, which is sufficient for moderate parallel I/O or matrix-keypad scanning without an external port expander. On-chip peripherals include brown-out detect/reset, POR, PWM, and a watchdog timer — these reduce the external supervisor IC count for a minimal BOM. Two 10-bit ADC channels provide basic analog-to-digital conversion for voltage or current sensing; the 10-bit resolution is adequate for monitoring thresholds but not high-precision measurement. No stock-holding claim is made here — sourced per request against the BOM line. ## Package and board-fit for the 100-LQFP The 100-LQFP package has a 14x14 mm body with 0.5 mm pitch — a 4-layer board is recommended for fan-out of the inner rows. The supplier device package is 100-LQFP (14x14). Surface-mount mounting type; the part ships in Tape & Reel (TR) format for automated pick-and-place assembly.","metaTitle":"LM3S1133-EQC50-A2T Texas Instruments ARM Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S1133-EQC50-A2T ARM Cortex-M3 MCU, 50 MHz, 64 KB flash, 16 KB RAM, 100-LQFP.","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":"Tape & Reel (TR)","RAM Size":"16K 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":"44","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":"LM3S1133","Program Memory Size":"64KB (64K 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/07cfc2ec6b08c2f11088a8c3c0010e2b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the LM3S1133-EQC50-A2T?","answer":"No official pin-compatible successor is recorded from Texas Instruments for this order code. A board spin is required for any functional replacement."},{"question":"What is the core speed and memory of the LM3S1133-EQC50-A2T?","answer":"The ARM Cortex-M3 core runs at 50 MHz. On-chip memory is 64 KB flash and 16 KB SRAM."},{"question":"What temperature range does the LM3S1133-EQC50-A2T support?","answer":"Industrial-grade -40°C to 105°C operating temperature range."},{"question":"What package does the LM3S1133-EQC50-A2T come in?","answer":"100-LQFP (14x14 mm body, 0.5 mm pitch), surface-mount, Tape & Reel packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1133-EQC50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1133-EQC50-A2T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:40:03.633Z","lastPublished":"2026-07-21T02:40:03.633Z","indexable":true}}