{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430G2131IRSA16T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430G2131IRSA16T","canonicalUrl":"https://icboms.com/texas-instruments/MSP430G2131IRSA16T","factsUrl":"https://icboms.com/api/mcp/products/MSP430G2131IRSA16T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430G2xx series 16-bit MCU, MSP430G2131IRSA16T, 16MHz, 1KB Flash, 128 x 8 RAM, I²C/SPI, 10 I/O, 1.8V-3.6V, -40°C~85°C, 16-QFN (4x4), Tape & Reel.","salesMarkdown":"## Small-footprint 16-bit MCU for low-power sensing and control The part runs at 16 MHz and includes an internal oscillator, so no external clock components are needed. Typical applications include portable sensor nodes, simple control loops, and human-interface devices where low power draw and small board area are the priorities. ## 1 KB Flash and 128 B RAM — sizing the firmware budget With 1 KB of Flash and 128 bytes of RAM, this MCU is sized for single-purpose firmware — a simple state machine, a sensor readout with I²C or SPI, a PWM output, or a watchdog-supervised loop. The 128 x 8 RAM (128 bytes) limits data buffering to a few variables; anything beyond a small lookup table or a short FIFO will overflow. If your application needs more than a few hundred instructions or a moderate data buffer, step up to the 2 KB or 4 KB Flash variants in the same MSP430G2xx family — they share the same footprint and peripheral set, so the board layout does not change. ## I²C and SPI on a 10-I/O budget The MSP430G2131IRSA16T provides I²C and SPI connectivity through its 10 general-purpose I/O pins. Both interfaces share the same physical pins, so you use one or the other — not both simultaneously — unless you bit-bang a second interface on remaining GPIO. The 10 I/O count includes the pins used for the serial interfaces, so a design that enables I²C or SPI loses two to three pins for the bus lines. Plan the pin allocation before layout: the remaining GPIO must cover any button inputs, LED outputs, or interrupt lines the application needs.","metaTitle":"Texas Instruments MSP430G2131IRSA16T 16-Bit MCU, 1KB Flash","metaDescription":"Texas Instruments MSP430G2131IRSA16T 16-bit MCU, 1KB Flash, 128B RAM, 16 MHz, I²C/SPI, 10 I/O, 1.8V-3.6V, -40°C to 85°C, 16-QFN. Active lifecycle, RoHS3.","metaKeywords":null},"attributes":{"series":"MSP430G2xx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"16MHz","Series":"MSP430G2xx","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"128 x 8","Core Size":"16-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, SPI","Mounting Type":"Surface Mount","Number of I/O":"10","Core Processor":"MSP430 CPU16","Package / Case":"16-VQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430G2131","Program Memory Size":"1KB (1K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"16-QFN (4x4)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1400","priceTiers":[{"qty":1,"price":"$2.14000","currency":"USD"},{"qty":10,"price":"$1.92400","currency":"USD"},{"qty":25,"price":"$1.81520","currency":"USD"},{"qty":100,"price":"$1.54640","currency":"USD"},{"qty":250,"price":"$1.45200","currency":"USD"},{"qty":500,"price":"$1.27050","currency":"USD"},{"qty":1250,"price":"$1.05270","currency":"USD"},{"qty":2500,"price":"$0.98010","currency":"USD"},{"qty":6250,"price":"$0.94380","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/dcffd4e87ef2e9a7c45ca4c675b25e04.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430G2131IRSA16T/alternatives.json"},"ai":{"faq":[{"question":"Does MSP430G2131IRSA16T have I²C and SPI?","answer":"Yes, the MSP430G2131IRSA16T includes both I²C and SPI connectivity. These interfaces share pins with the 10 general-purpose I/O, so you use one at a time unless you bit-bang a second interface."},{"question":"Is MSP430G2131IRSA16T RoHS compliant?","answer":"Yes, the MSP430G2131IRSA16T is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430G2131IRSA16T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430G2131IRSA16T 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}}