{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S328-IGZ25-C2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S328-IGZ25-C2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S328-IGZ25-C2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S328-IGZ25-C2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 300 series MCU, LM3S328-IGZ25-C2T, 32-bit single-core ARM Cortex-M3 at 25 MHz, 16 KB Flash, 4 KB SRAM, 28 I/O, 8x10b ADC, I²C/SPI/UART, -40°C to 85°C, 48-VFQFN exposed pad.","salesMarkdown":"The LM3S328-IGZ25-C2T: This is a compact, cost-optimised MCU aimed at control applications where the code footprint stays under 16 KB and the data buffers fit within 4 KB — think sensor polling, relay sequencing, or a simple protocol bridge. The 28 general-purpose I/O pins and the 8-channel 10-bit ADC give it enough interface headroom for a handful of digital sensors and one analog feedback line. The internal oscillator means you can skip an external crystal for basic timing, though the PLL-based clock tree still needs a flash wait state adjustment if you push the core near 25 MHz from a lower startup frequency. ## 48-VFQFN with exposed pad — rework and thermal considerations The 48-VFQFN package (7x7 mm body) has an exposed thermal pad underneath. ## Connectivity and peripherals — I²C, SPI, UART, SSI, Microwire The peripheral set includes I²C, SPI, SSI, Microwire, and UART/USART interfaces. SSI and Microwire are legacy synchronous serial protocols still common in industrial sensor modules. For dual-sourcing resilience, the Stellaris 300 series includes several pin-compatible density variants — the 32 KB Flash / 8 KB SRAM LM3S328-IGZ25-C2 is a direct drop-in if your firmware grows beyond 16 KB.","metaTitle":"LM3S328-IGZ25-C2T Stellaris ARM Cortex-M3 MCU, 25 MHz","metaDescription":"LM3S328-IGZ25-C2T Stellaris ARM Cortex-M3 MCU, 25 MHz core, 16 KB Flash, 4 KB SRAM, 28 I/O, 8x10b ADC, -40°C to 85°C, 48-VQFN. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"25MHz","Series":"Stellaris® ARM® Cortex®-M3S 300","Package":"Tape & Reel (TR)","RAM Size":"4K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"28","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-VFQFN Exposed Pad","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S328","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-VQFN (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/47a181b8b99cd2b700efc344c2b6e241.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S328-IGZ25-C2T/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between LM3S328-IGZ25-C2T and LM3S328-IGZ25-C2?","answer":"The LM3S328-IGZ25-C2T and LM3S328-IGZ25-C2 are the same silicon die — the only difference is the shipping medium. The -C2T suffix indicates Tape & Reel packaging, while the -C2 suffix is typically Tray or Tube. Both are pin-compatible and functionally identical; the choice depends on your assembly line's feeder setup."},{"question":"What are the alternatives to LM3S328-IGZ25-C2T?","answer":"Within the Stellaris 300 series, the LM3S328-IGZ25-C2 (Tray/Tube) is the same die in a different shipping medium. For a higher memory tier, the LM3S328-IGZ25-C2T's base product number LM3S328 covers variants with up to 32 KB Flash and 8 KB SRAM in the same 48-VQFN footprint — check the base product number LM3S328 for density options that are pin-compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S328-IGZ25-C2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S328-IGZ25-C2T 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}}