{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S101-EGZ20-C2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S101-EGZ20-C2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S101-EGZ20-C2","factsUrl":"https://icboms.com/api/mcp/products/LM3S101-EGZ20-C2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 100 microcontroller, LM3S101-EGZ20-C2, 32-bit single-core, 20 MHz, 8 KB flash, 2 KB RAM, 48-VFQFN exposed pad, -40 to 105 °C, tray.","salesMarkdown":"## Memory and speed — what fits in 8 KB flash and 2 KB RAM The LM3S101-EGZ20-C2: The 20 MHz Cortex-M3 core paired with 8 KB flash and 2 KB RAM (2K x 8) means this part is sized for a single control loop or a state machine that fits in under 6 KB of code — leaving headroom for a small bootloader and a UART command parser. The 2 KB SRAM holds about 500 32-bit variables; a full TCP/IP stack or a GUI frame buffer will not fit without external memory, which this part does not support directly. ## Temperature range and on-chip resources Rated for -40 to 105 °C ambient, the part suits outdoor or under-hood deployment where the internal oscillator's accuracy drift with temperature may be acceptable for basic UART timing. On-chip peripherals include brown-out detect, POR, PWM, and a watchdog timer — enough to replace an external supervisor for simple reset and power-fail handling. ## Serial connectivity — what is and is not on-chip The LM3S101-EGZ20-C2 provides Microwire, SPI, SSI, and UART/USART interfaces — covering the common serial buses for sensor readout, SPI flash, and RS-232/485 links. Notably absent are I2C, CAN, and USB; if the application requires those, an external bridge chip or a different MCU in the Stellaris family is needed. The 18 general-purpose I/O pins are enough for a handful of sensors and a small keypad or LED matrix.","metaTitle":"Texas Instruments LM3S101-EGZ20-C2 ARM Cortex-M3 MCU, 20 MHz","metaDescription":"Texas Instruments LM3S101-EGZ20-C2 Stellaris ARM Cortex-M3 MCU, 20 MHz, 8 KB flash, 2 KB RAM, 48-VQFN, -40 to 105°C. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"20MHz","Series":"Stellaris® ARM® Cortex®-M3S 100","Package":"Tray","RAM Size":"2K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"18","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-VFQFN Exposed Pad","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S101","Program Memory Size":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"48-VQFN (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"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 LM3S101-EGZ20-C2 in the Stellaris family?","answer":"Within the same Stellaris ARM Cortex-M3S 100 series, parts like the LM3S102 or LM3S113 (if available) share the same 48-VQFN footprint and peripheral set, differing mainly in flash and RAM size. The base product number LM3S101 indicates the entry-level memory configuration; a higher-numbered sibling in the same package offers more code space without a board spin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S101-EGZ20-C2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S101-EGZ20-C2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}