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Texas Instruments MSP430I2031TRHBT
- Part No.:
- MSP430I2031TRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430I2031TRHBT.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:222
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Product details
Overview
MSP430I2031TRHBT from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller optimized for precision energy metering and sensor monitoring. It integrates three 24-bit sigma-delta ADCs with differential PGA inputs, operates from 2.2 V to 3.6 V, delivers 275 µA/MHz active current at 16.384 MHz, and supports wake-up from standby in 1 µs - enabling high-accuracy, battery-operated power monitoring in smart plugs and submeters.
For engineers reviewing the MSP430I2031TRHBT datasheet, MSP430I2031TRHBT pinout, MSP430I2031TRHBT application, or MSP430I2031TRHBT equivalent, key selection criteria include its 32-pin VQFN (RHB) package, triple SD24 ADC architecture, eUSCI_A0/eUSCI_B0 serial interfaces, integrated LDO core regulator, and support for metrology-grade signal acquisition in single-phase AC/DC systems.
Technical Context
The MSP430I2031TRHBT implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) tunable to 16.384 MHz, enabling sub-5 µs wake-up from low-power modes. Its analog subsystem centers on three independent 24-bit sigma-delta ADCs (SD24), each with programmable gain amplifiers and differential input pairs - supporting simultaneous high-resolution measurement of voltage, current, and auxiliary signals.
Digital peripherals include two 16-bit Timer_A modules (each with three capture/compare registers), hardware multiplier for DSP operations, eUSCI_A0 supporting UART/IrDA/SPI, and eUSCI_B0 supporting SPI/I²C. Power management features an integrated LDO delivering 1.8 V core supply, supply voltage monitor, brownout detector, and temperature sensor - all coordinated across five low-power modes including LPM4.5 (75 nA shutdown).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generators; enables compact, efficient firmware for metrology algorithms. |
| ADC Resolution & Count | Three independent 24-bit sigma-delta ADCs with differential PGA inputs; supports concurrent high-precision sensing of multiple analog channels. |
| Operating Voltage | 2.2 V to 3.6 V; compatible with standard Li-ion, coin-cell, and regulated industrial supplies without external level-shifting. |
| Active Current | 275 µA/MHz at 16.384 MHz, 3.0 V (typical); enables real-time computation while minimizing battery drain in portable meters. |
| Low-Power Modes | LPM3 (210 µA), LPM4 (70 µA), LPM4.5 (75 nA); provides scalable power states for duty-cycled sensing and long-term standby. |
| Package | 32-pin VQFN (RHB), 5 mm × 5 mm; supports high-density PCB layouts and thermal pad grounding to DVSS for stability. |
| Serial Interfaces | eUSCI_A0 (UART/IrDA/SPI) + eUSCI_B0 (SPI/I²C); enables dual-protocol communication for host MCU interfacing and sensor data aggregation. |
Pinout & Package
Package: 32-pin VQFN (RHB), 5 mm × 5 mm, with exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0.0+/A0.0- | SD24 Channel 0 differential analog input | Primary high-precision input pair for voltage or current sensing; requires matched PCB routing and AVSS reference. |
| A1.0+/A1.0- | SD24 Channel 1 differential analog input | Second independent metrology channel; supports phase-shifted or auxiliary signal acquisition. |
| A2.0+/A2.0- | SD24 Channel 2 differential analog input | Third metrology channel; enables full single-phase energy measurement (V, I, neutral/reference) simultaneously. |
| VREF | External reference voltage input | Accepts external precision reference (e.g., 2.5 V) for SD24; internal reference used if left unconnected per design. |
| RST/NMI/SBWTDIO | Reset / NMI input / Spy-Bi-Wire data I/O | Single-pin debug interface for programming and test; supports in-system flash updates without external JTAG header. |
| P1.0–P1.7, P2.0–P2.7 | Configurable GPIO with peripheral multiplexing | 16 total I/O pins; support timer capture/compare, eUSCI signals, and general-purpose control - no dedicated analog-only pins. |
Key Features
| Feature | Design Value |
|---|---|
| Triple 24-bit SD24 ADCs with PGA | Enables simultaneous high-resolution acquisition of voltage, current, and auxiliary parameters without external signal conditioning. |
| Integrated 1.8-V LDO core regulator | Eliminates need for external core voltage regulator; improves system BOM simplicity and noise immunity in metrology designs. |
| Sub-1-µs wake-up from LPM3 | Allows rapid response to event-triggered sampling (e.g., zero-crossing detection), minimizing latency in real-time metering. |
| eUSCI_A0 with IrDA encoder/decoder | Supports optical communication for utility-side data readout without additional transceivers or protocol stacks. |
| Hardware 16×16 multiplier | Accelerates RMS, harmonic, and energy calculation routines in firmware - reducing CPU load and active time. |
Applications
| Smart Plug Energy Monitoring | Industrial Submetering Node |
|---|---|
|
Use Scenario: Real-time power consumption tracking in residential smart plugs with local display and cloud reporting. IC Role / Device Role / Timing Role: Primary metrology controller performing simultaneous voltage/current sampling, RMS calculation, and energy integration. Use Value: Triple SD24 ADCs enable concurrent measurement without time-multiplexing error; LPM4.5 extends battery life beyond 5 years in wireless variants. |
Use Scenario: DIN-rail mounted submeter aggregating load data from HVAC, lighting, and machinery circuits in factory settings. IC Role / Device Role / Timing Role: Standalone measurement engine interfacing with isolated current sensors and RS-485 via eUSCI_B0. Use Value: Integrated LDO and supply monitoring ensure stable operation under fluctuating industrial rail voltages; 16.384-MHz DCO enables precise 50/60 Hz synchronization. |
| Medical Patient Parameter Logger | DC Power Supply Monitor |
|
Use Scenario: Portable patient monitor logging ECG, respiration, and temperature using discrete analog front-ends. IC Role / Device Role / Timing Role: Low-noise analog acquisition hub digitizing multiple biopotential signals with programmable gain and filtering. Use Value: Differential SD24 inputs reject common-mode noise from body-coupled interference; 24-bit resolution captures microvolt-level physiological signals. |
Use Scenario: Embedded telemetry module inside 12–48 V DC power supplies for efficiency reporting and fault logging. IC Role / Device Role / Timing Role: Precision voltage/current monitor interfacing with shunt resistors and isolation amplifiers via SD24 inputs. Use Value: Internal reference and PGA eliminate external precision references; eUSCI_A0 UART enables direct connection to supply's host MCU for real-time telemetry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metrology microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430I2041TRHBT | Four 24-bit SD24 ADCs vs. three; identical package, clock, and peripheral set. | Required for designs needing four independent analog channels (e.g., 2-phase + neutral + temperature). | Select when fourth SD24 channel is needed; otherwise, MSP430I2031TRHBT offers optimal cost/performance balance for single-phase metering. |
| MSP430I2030TRHBT | 16 KB flash / 1 KB RAM vs. 32 KB / 2 KB; identical ADC count, package, and peripherals. | Suitable for simpler firmware with minimal calibration tables or fixed-function metering without advanced analytics. | Choose for cost-sensitive, function-limited deployments where flash/RAM headroom is not required for future feature updates. |
Compared with MSP430I2041TRHBT and MSP430I2030TRHBT, the MSP430I2031TRHBT delivers the optimal trade-off of metrology ADC count, memory capacity, and power efficiency for certified single-phase energy measurement - avoiding over-specification while ensuring firmware scalability.
Availability
MSP430I2031TRHBT is available at Aetrix Electronics and suitable for smart plug energy monitoring, industrial submetering nodes, and medical patient parameter loggers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MSP430I2031TRHBT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in industrial and metrology solutions.
The MSP430I2031TRHBT belongs to the MSP430™ Metrology and Monitoring portfolio, designed specifically for high-accuracy, ultra-low-power energy measurement and sensor signal acquisition in battery- and line-powered devices.
FAQ
What is the maximum system clock frequency supported by the MSP430I2031TRHBT?
The MSP430I2031TRHBT supports a maximum system clock frequency of 16.384 MHz, delivered by its internal digitally controlled oscillator (DCO). This frequency is factory-trimmed and stable across voltage and temperature, enabling precise timing for metrology sampling and synchronous communication protocols without external crystals.
How many analog input channels does the MSP430I2031TRHBT support, and what is their resolution?
The MSP430I2031TRHBT supports three independent 24-bit sigma-delta analog-to-digital converters (SD24), each with differential PGA inputs. Each channel provides true 24-bit resolution with programmable gain (1× to 64×), enabling high-fidelity acquisition of voltage, current, and auxiliary signals in energy metering applications.
Does the MSP430I2031TRHBT include an integrated voltage regulator?
Yes, the MSP430I2031TRHBT includes an integrated low-dropout (LDO) regulator that generates a stable 1.8-V core supply from the main VCC (2.2–3.6 V). This eliminates the need for an external core regulator, reduces board space, and improves power supply rejection ratio for sensitive analog measurements.
What communication interfaces are available on the MSP430I2031TRHBT?
The MSP430I2031TRHBT features two enhanced universal serial communication interfaces: eUSCI_A0 supports UART, IrDA, and SPI; eUSCI_B0 supports SPI and I²C. These interfaces enable flexible host connectivity, sensor networking, and optical data readout - all without requiring external transceivers.
What package type and pin count does the MSP430I2031TRHBT use?
The MSP430I2031TRHBT uses a 32-pin VQFN (RHB) package measuring 5 mm × 5 mm with an exposed thermal pad. The thermal pad must be connected to DVSS for optimal thermal performance and electrical stability, as specified in TI's packaging guidelines.
MSP430I2031TRHBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- MSP430I2xx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16.384Mhz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 3.6V
- Data Converters:
- A/D 3x24b Sigma-Delta
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430I2031TRHBT FAQ
1.How can I place an order for MSP430I2031TRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430I2031TRHBT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430I2031TRHBT reliable?
The price and inventory of MSP430I2031TRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430I2031TRHBT is usually 5 days.
3.What payment methods are accepted for MSP430I2031TRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430I2031TRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430I2031TRHBT?
MSP430I2031TRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430I2031TRHBT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430I2031TRHBT?
For technical support, including MSP430I2031TRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430I2031TRHBT requirements.
6.How does Aetrix verify that MSP430I2031TRHBT is sourced from the original manufacturer or authorized distributors?
All MSP430I2031TRHBT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430I2031TRHBT meets industry standards.
7.What is the process for return or replacement of MSP430I2031TRHBT?
All MSP430I2031TRHBT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430I2031TRHBT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430I2031TRHBT part is unused and in its original packaging.
Return procedure for MSP430I2031TRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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