{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430I2021TRHBT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430I2021TRHBT","canonicalUrl":"https://icboms.com/texas-instruments/MSP430I2021TRHBT","factsUrl":"https://icboms.com/api/mcp/products/MSP430I2021TRHBT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430I2xx series 16-bit MCU, MSP430I2021TRHBT, 16.384MHz core, 32KB Flash, 2K x 8 RAM, dual 24-bit sigma-delta ADC, 16 I/O, I²C/SPI/UART, -40°C to 105°C, 32-VQFN (5x5).","salesMarkdown":"## What this 16-bit MCU brings to a metering or sensor design Those converters are aimed at energy metering, flow sensing, and precision instrumentation where you need direct sensor digitisation without an external ADC. ## The 24-bit sigma-delta ADC pair — why it matters for the BOM The dual 24-bit sigma-delta ADCs are the reason you pick this part over a plain MSP430G2xxx. They handle direct connection to current transformers, shunt resistors, or bridge sensors, which means you can drop an external ADC from the BOM. The converters are built for low-frequency, high-resolution measurement — think 50/60 Hz mains metering or strain-gauge readout — not audio-rate sampling. If your application needs two synchronised measurement channels (voltage and current in a single-phase meter, for instance), this part covers it in one package. ## Connectivity and I/O for a sensor hub The IrDA support is a niche bonus if you need optical isolation on a meter pulse output. The PWM and watchdog timer are standard for control loops and system supervision. Brown-out detection is built in, which saves an external reset supervisor on the board. ## Package and board-fit notes for the 32-VQFN The part comes in a 32-VFQFN with an exposed pad (5x5 mm body). The package is surface-mount only, so no socketed field swap; plan for reflow assembly. The supplier device package is 32-VQFN (5x5), which is a common footprint across the MSP430I2xx family, so a board layout can be shared across density variants.","metaTitle":"TI MSP430I2021TRHBT 16-bit MCU, 16.384MHz, 32KB Flash","metaDescription":"Texas Instruments MSP430I2021TRHBT 16-bit MCU, 16.384MHz core, 32KB Flash, 2K RAM, dual 24-bit sigma-delta ADC. Industrial temp -40°C to 105°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":"16.384Mhz","Series":"MSP430I2xx","Package":"Tube","RAM Size":"2K x 8","Core Size":"16-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, PWM, WDT","Connectivity":"I²C, IrDA, SCI, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"16","Core Processor":"MSP430 CPU16","Package / Case":"32-VFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 2x24b Sigma-Delta","Oscillator Type":"External","lifecycle_stage":"eol_hot","Base Product Number":"MSP430I2021","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"32-VQFN (5x5)","Voltage - Supply (Vcc/Vdd)":"2.2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.2100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/930bb8693ea1d814311da91a1434267f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430I2021TRHBT/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to MSP430I2021TRHBT in this family?","answer":"Within the MSP430I2xx family, several pin-compatible variants share the same 32-VQFN footprint and peripheral set but differ in Flash and RAM density. The base product number MSP430I2021 identifies this specific 32 KB Flash / 2K RAM configuration. For a higher-memory sibling, look at the MSP430I2031 or MSP430I2041 — same ADC, same package, more program space. No direct second-source from another manufacturer exists; this is a TI-proprietary core."},{"question":"Is MSP430I2021TRHBT RoHS compliant?","answer":"The part is lead-free and RoHS-compliant per TI's standard environmental compliance for the MSP430I2xx series. The RHBT suffix indicates a green, RoHS-compliant, NiPdAu-Ag plated package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430I2021TRHBT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430I2021TRHBT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}