{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430F5171IRSBT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430F5171IRSBT","canonicalUrl":"https://icboms.com/texas-instruments/MSP430F5171IRSBT","factsUrl":"https://icboms.com/api/mcp/products/MSP430F5171IRSBT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430F5xx MSP430F5171IRSBT, 16-bit MSP430 CPUXV2, 25 MHz, 32 KB Flash, 2K x 8 RAM, 31 I/O, 1.8 V to 3.6 V, 40-WFQFN Exposed Pad, -40°C to 85°C.","salesMarkdown":"## 25 MHz CPUXV2 — what it means for loop timing The MSP430F5171IRSBT: The 25 MHz clock drives the CPUXV2 core and integrated peripherals—DMA, PWM, and brown-out reset—without cycle stealing. 32 KB of Flash (32K x 8) and 2 KB of RAM (2K x 8) define the firmware and data footprint this part can hold. The Flash is enough for a moderate application stack—bootloader, communication drivers, calibration tables, and a state-machine control loop—but leaves little room for a full RTOS or extensive GUI library. The 2 KB RAM is the tighter constraint: it handles a few hundred bytes of stack, a modest frame buffer, and DMA buffers, but designs with large look-up tables or extensive packet buffering will need to use Flash for constants and page-swap data. This memory profile aligns with the MSP430F5xx value-tier positioning: enough for the job, not overprovisioned for the cost target. ## Supply range and power rail design At the low end, 1.8 V operation is useful for energy-harvesting or coin-cell designs where every millivolt of headroom extends run time. The integrated brown-out reset (BOR) and power-on reset (POR) supervise the rail, so an external supervisor IC is not needed for most applications. ## Package and thermal interface: 40-WQFN (5x5 mm) The 40-WQFN (5x5 mm) with exposed pad is the compact land-grid footprint for this MCU. The 31 I/O lines are distributed around the QFN perimeter. For a production BOM, this removes the single-source risk that comes with NRND or EOL parts. If a backup is needed, the MSP430F5xx family includes several 40-pin QFN variants with similar peripheral sets, but pin compatibility should be verified against the specific package and I/O mapping.","metaTitle":"MSP430F5171IRSBT 16-bit MCU, 25 MHz, 32 KB Flash, 40-WQFN","metaDescription":"Texas Instruments MSP430F5171IRSBT 16-bit MCU with 25 MHz CPUXV2 core, 32 KB Flash, 2 KB RAM, 31 I/O, 1.8-3.6 V supply, -40 to 85°C. 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":"MSP430F5xx","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"2K x 8","Core Size":"16-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, SCI, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"31","Core Processor":"MSP430 CPUXV2","Package / Case":"40-WFQFN Exposed Pad","Product Status":"Active","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430F5171","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"40-WQFN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.7700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a3cb4d9178f099b2d340a21c97fb61cb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430F5171IRSBT/alternatives.json"},"ai":{"faq":[{"question":"Can I use MSP430F5171IRSBT with a 5V supply?","answer":"No. Applying 5 V to the Vcc pin would exceed the rated maximum and damage the device. Use a 3.3 V regulator or a 3.6 V rail if powering from a 5 V bus."},{"question":"What is MSP430F5171IRSBT's listed speed?","answer":"The core processor (MSP430 CPUXV2) is rated for 25 MHz operation. This is the maximum clock frequency for the CPU and system bus."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430F5171IRSBT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430F5171IRSBT 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}}