{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430F5521IPN","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430F5521IPN","canonicalUrl":"https://icboms.com/texas-instruments/MSP430F5521IPN","factsUrl":"https://icboms.com/api/mcp/products/MSP430F5521IPN","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430F5xx 16-bit microcontroller, MSP430F5521IPN, 25MHz, 32KB Flash, 8K x 8 RAM, USB 2.0, 63 I/O, 80-LQFP, -40°C to 85°C.","salesMarkdown":"## Flash and RAM budget for a USB-connected design The MSP430F5521IPN packs 32 KB of flash and 8 KB of RAM on a 16-bit core clocked at 25 MHz. For a USB data-logger running a small RTOS or a bare-metal state machine, the flash holds the application plus the USB stack with room to spare — the TI USB API library consumes roughly 8–10 KB, leaving 22+ KB for the control loop and protocol handling. The 8 KB RAM covers the stack heap, USB endpoint buffers (typically 512 bytes per endpoint), and a modest circular buffer for sensor data. If the firmware needs to log a few hundred samples before dumping over USB, the 8 KB RAM is tight — budget the data buffer size before committing the BOM. The DMA controller (listed in the peripheral set) can stream ADC results directly into RAM without CPU intervention, which stretches the effective throughput. ## USB PHY on-chip — one less chip on the BOM The connectivity block also includes I²C, SPI, UART, and IrDA — enough to talk to sensors, an external EEPROM, or a radio module without adding a serial bridge. The 63 I/O lines in the 80-LQFP package give headroom for a parallel LCD, a keypad matrix, and a few spare GPIOs for status LEDs or relay drivers. The 12x12 mm footprint is hand-solderable with a fine-tip iron and a magnifier — no reflow oven required for prototyping. ## Industrial temperature and supply flexibility The internal oscillator trims to 1% accuracy across temperature — good enough for UART baud-rate generation at 115200 bps. For a tighter clock tolerance (USB requires 0.25% for full-speed), feed an external crystal into the LFXT1 or XT2 pins; the MSP430 clock system accepts both. ## Active lifecycle — no end-of-life pressure Sourced through authorized distribution channels. No single-source risk from a phase-out window.","metaTitle":"Texas Instruments MSP430F5521IPN MCU, 25MHz, 32KB Flash","metaDescription":"Texas Instruments MSP430F5521IPN 16-bit MCU, 25MHz, 32KB flash, 8KB RAM, USB 2.0 PHY, -40°C to 85°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":"25MHz","Series":"MSP430F5xx","Package":"Tray","RAM Size":"8K x 8","Core Size":"16-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SCI, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"63","Core Processor":"MSP430 CPUXV2","Package / Case":"80-LQFP","Product Status":"Active","Data Converters":"A/D 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430F5521","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"80-LQFP (12x12)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.0400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e95dc6e7be321ead419de6523f16065.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430F5521IPN/alternatives.json"},"ai":{"faq":[{"question":"What is the flash and RAM size on this MSP430?","answer":"The flash holds the firmware plus the USB stack; the RAM covers stack, heap, and USB endpoint buffers."},{"question":"What temperature range does MSP430F5521IPN support?","answer":"This covers factory-floor enclosures, outdoor telecom cabinets, and unheated equipment rooms."},{"question":"Does MSP430F5521IPN have a built-in USB interface?","answer":"Yes. The connectivity block includes a full USB 2.0 PHY with integrated transceiver supporting I²C, IrDA, LINbus, SCI, SPI, UART/USART, and USB. No external USB chip is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430F5521IPN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430F5521IPN 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}}