{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430FR5721IDA","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430FR5721IDA","canonicalUrl":"https://icboms.com/texas-instruments/MSP430FR5721IDA","factsUrl":"https://icboms.com/api/mcp/products/MSP430FR5721IDA","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430™ FRAM series, MSP430FR5721IDA, 16-Bit MCU, 8MHz, 4KB (4K x 8) FRAM, 1K x 8 SRAM, 38-TSSOP, -40°C ~ 85°C.","salesMarkdown":"## FRAM-based 16-bit MCU for low-power control Its distinguishing feature is 4 KB of FRAM program memory — non-volatile storage that writes at near-SRAM speed with essentially unlimited endurance, unlike conventional Flash. This makes it a strong fit for applications that log data, update firmware in the field, or need to retain state across power cycles without an external EEPROM. The device integrates 1 KB of SRAM, 30 general-purpose I/O lines, a 14-channel 10-bit ADC, and serial interfaces including I²C, SPI, and UART. ## FRAM vs Flash — what it changes for the BOM The 4 KB FRAM array is byte-addressable and writes at bus speed with no erase cycle, so the firmware can treat it as unified memory for code and data. This simplifies the memory map and reduces the component count on the board. The trade-off is that FRAM density typically tops out lower than Flash — the MSP430FR5721IDA offers 4 KB, which constrains the firmware footprint compared to a Flash MCU with 16 KB or 32 KB. For applications that fit within that limit, the FRAM approach saves a serial memory device and its associated PCB area. ## Package and thermal considerations for layout The device is supplied in a 38-pin TSSOP package (6.10 mm body width) with a 0.5 mm pitch. It is a surface-mount part intended for reflow soldering. The package does not have an exposed thermal pad, so heat dissipation relies on the leadframe and PCB copper. Decoupling with a 0.1 µF ceramic capacitor per supply pin pair is sufficient for this speed grade.","metaTitle":"MSP430FR5721IDA 16-bit MCU, 8 MHz, 4 KB FRAM, 38-TSSOP","metaDescription":"Texas Instruments MSP430FR5721IDA 16-bit MCU with 8 MHz speed, 4 KB FRAM, 1 KB SRAM, 30 I/O, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"8MHz","Series":"MSP430™ FRAM","Package":"Tube","RAM Size":"1K x 8","Core Size":"16-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SCI, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"30","Core Processor":"MSP430 CPUXV2","Package / Case":"38-TSSOP (0.240\\\", 6.10mm Width)","Product Status":"Active","Data Converters":"A/D 14x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430FR5721","Program Memory Size":"4KB (4K x 8)","Program Memory Type":"FRAM","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"38-TSSOP","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9648","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6d22cd36ef84fcd0b0b17f590749a972.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can MSP430FR5721IDA be replaced with MSP430FR5730?","answer":"The MSP430FR5730 is a higher-density sibling in the same FRAM family, offering more memory and a different peripheral set. It is not a direct pin-compatible replacement — the package and pinout differ. For a drop-in alternative within the same package, verify the specific MSP430FR572x variant that matches the 38-TSSOP footprint."},{"question":"How many I/O pins does MSP430FR5721IDA have?","answer":"The device provides 30 general-purpose I/O pins."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430FR5721IDA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430FR5721IDA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}