{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430G2121IRSA16T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430G2121IRSA16T","canonicalUrl":"https://icboms.com/texas-instruments/MSP430G2121IRSA16T","factsUrl":"https://icboms.com/api/mcp/products/MSP430G2121IRSA16T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430G2xx series 16-bit MCU, MSP430G2121IRSA16T, 16 MHz CPU, 1 KB Flash, 128 B RAM, I²C, SPI, 10 I/O, 1.8 V–3.6 V, -40°C to 85°C, 16-QFN (4x4) exposed pad, Tape & Reel.","salesMarkdown":"The Texas Instruments MSP430G2121IRSA16T is a 16-bit MCU from the MSP430G2xx series, clocked at 16 MHz with 1 KB of Flash program memory and 128 bytes of RAM. TI lists the MSP430G2121IRSA16T as Not Recommended for New Designs (NRND). That means the part is still available for existing production runs, but TI will not invest in new wafer starts or extended lifetime buys. For a BOM freeze or a new design, the safer path is to evaluate a current-production MSP430G2xx or MSP430FRxx sibling with compatible pinout and memory footprint. ## I/O and serial interface Ten digital I/O lines are available, with hardware I²C and SPI modules on dedicated pins.","metaTitle":"TI MSP430G2121IRSA16T 16-Bit MCU, 16 MHz, 1 KB Flash, 16-QFN","metaDescription":"Texas Instruments MSP430G2121IRSA16T 16-bit MCU, 16 MHz, 1 KB Flash, 128 B RAM, I²C/SPI, -40°C to 85°C, 16-QFN. NRND — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"16MHz","Series":"MSP430G2xx","Package":"Tape & Reel (TR)","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":"Not For New Designs","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430G2121","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":"$1.1193","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/dcffd4e87ef2e9a7c45ca4c675b25e04.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430G2121IRSA16T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to MSP430G2121IRSA16T?","answer":"TI does not list a direct pin-compatible successor for this exact order code. Within the MSP430G2xx family, parts with higher Flash density (e.g., 2 KB or 4 KB) often share the same 16-QFN footprint and peripheral set — check the specific device datasheet for pin compatibility before substituting."},{"question":"What is MSP430G2121IRSA16T's listed speed?","answer":"The CPU runs at 16 MHz, which is the maximum clock frequency supported by the internal oscillator or an external clock source."},{"question":"Where can I buy MSP430G2121IRSA16T and how is it quoted?","answer":"We source this NRND part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430G2121IRSA16T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430G2121IRSA16T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}