{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1133-IQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1133-IQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1133-IQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1133-IQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series MCU, LM3S1133-IQC50-A2, 50MHz, 64KB Flash, 16KB SRAM, 44 I/O, 100-LQFP, -40°C to 85°C, tray.","salesMarkdown":"Texas Instruments has marked the LM3S1133-IQC50-A2 as Obsolete. This part is a 32-bit single-core microcontroller from the Stellaris ARM Cortex-M3S 1000 series, running the Cortex-M3 core at 50 MHz. The 64 KB on-chip Flash and 16 KB SRAM define the firmware and data buffer budget — sufficient for control loops, sensor fusion, and communication stacks that fit within that footprint. ## 50 MHz Cortex-M3 with 44 I/O and 2x10-bit ADC The 50 MHz core clock delivers the throughput for real-time control tasks — PWM generation, UART polling, and ADC sampling — without external timing components, thanks to the internal oscillator. The 44 general-purpose I/O lines provide enough pins for a mid-complexity control board: keypad scanning, LED driving, and parallel LCD interface alongside the serial peripherals. Connectivity options include I²C, SPI, SSI, UART/USART, IrDA, and Microwire — covering the common fieldbus and sensor interfaces in industrial automation, building control, and test equipment. The two 10-bit analog-to-digital converters allow simultaneous sampling of two analog channels, such as a potentiometer feedback and a temperature sensor, without an external mux. On-chip brown-out detect and POR ensure the core resets cleanly when the supply dips below the threshold, eliminating the need for an external supervisor IC in many designs. ## Industrial temperature grade and 100-LQFP footprint The 100-pin LQFP package with a 14x14 mm body requires a 4-layer PCB for full fan-out of the 0.50 mm pitch leads; a 2-layer board will only break out the outer rows, limiting signal access.","metaTitle":"LM3S1133-IQC50-A2 Texas Instruments Stellaris MCU, 50MHz","metaDescription":"Texas Instruments LM3S1133-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 64KB Flash, 16KB SRAM, 44 I/O, -40°C to 85°C, 100-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"50MHz","title":"LM3S1133-IQC50-A2","Series":"Stellaris® ARM® Cortex®-M3S 1000","Package":"Tray","RAM Size":"16K x 8","Core Size":"32-Bit Single-Core","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","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~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.5900","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1133-IQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the LM3S1133-IQC50-A2's core speed and memory?","answer":"The ARM Cortex-M3 core runs at 50 MHz. On-chip memory comprises 64 KB of Flash and 16 KB of SRAM — enough for firmware that handles serial communication, PWM control, and basic data logging without external memory."},{"question":"What compliance documentation does Texas Instruments provide for the LM3S1133-IQC50-A2?","answer":"The part ships in tray packaging. For a specific compliance certificate or material declaration, request it at the time of RFQ — independent distributors may have the original TI documentation on file."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1133-IQC50-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/LM3S1133-IQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:40:06.408Z","lastPublished":"2026-07-21T02:40:06.408Z","indexable":true}}