My Inquiry
My Account
Texas Instruments MSP430I2031TRHBR
- Part No.:
- MSP430I2031TRHBR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430I2031TRHBR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430I2031TRHBR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller optimized for precision energy metering and battery-powered monitoring applications. It integrates three 24-bit sigma-delta ADCs with differential PGA inputs, operates from 2.2 V to 3.6 V, delivers 16.384-MHz system clock via internal DCO, and achieves 75 nA shutdown current (LPM4.5) at 3.0 V - enabling multi-year operation in smart plugs and submeters.
For engineers reviewing the MSP430I2031TRHBR datasheet, MSP430I2031TRHBR pinout, MSP430I2031TRHBR application, or MSP430I2031TRHBR equivalent, key selection criteria include ADC channel count (3× 24-bit SD24), 32-pin VQFN (RHB) package compatibility, eUSCI_A0/eUSCI_B0 interface support (UART/IrDA/SPI/I²C), and verified low-power mode timing (1 µs wake-up from LPM3).
Technical Context
The MSP430I2031TRHBR implements a 16-bit RISC CPU with constant generators and hardware multiplier (16×16), enabling efficient signal processing for metrology algorithms. Its analog subsystem centers on three independent SD24 modules, each supporting differential PGA inputs, programmable gain, and oversampling ratios up to 256 - directly supporting high-accuracy AC/DC current and voltage measurement.
Digital peripherals include two 16-bit Timer_A modules (each with three capture/compare registers), dual eUSCI modules (eUSCI_A0 for UART/IrDA/SPI; eUSCI_B0 for SPI/I²C), and a flexible clock system with internal DCO, external resistor option, and ACLK/SMCLK/MCLK routing - all managed by an integrated LDO delivering regulated 1.8-V core supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with hardware multiplier (16×16) and constant generators - enables cycle-efficient DSP operations for real-time energy calculation. |
| ADC Configuration | Three independent 24-bit sigma-delta ADCs (SD24) with differential PGA inputs - supports simultaneous voltage/current sensing in single-phase metering. |
| Supply Voltage Range | 2.2 V to 3.6 V - compatible with standard Li-ion, coin-cell, and regulated 3.3-V rails without external level-shifting. |
| Low-Power Modes | LPM4.5 shutdown: 75 nA at 3.0 V; LPM3 standby: 210 µA at 3.0 V with full RAM retention - extends battery life in portable monitors. |
| Communication Interfaces | eUSCI_A0 (UART/IrDA/SPI) + eUSCI_B0 (SPI/I²C) - enables local serial telemetry and sensor bus connectivity without external transceivers. |
| Package & Pin Count | 32-pin VQFN (RHB), 5 mm × 5 mm - provides compact footprint with thermal pad tied to DVSS for stable metrology-grade analog performance. |
| Wake-up Time | 1 µs from LPM3 to active mode - ensures rapid response to event-triggered measurements without latency penalties. |
Pinout & Package
Package: 32-pin VQFN (RHB), 5 mm × 5 mm, with exposed thermal pad recommended to be connected to DVSS per TI design guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0.0+/A0.0- | SD24 Channel 0 differential analog input | Primary input pair for high-precision current sensing with PGA gain control and 24-bit resolution. |
| A1.0+/A1.0- | SD24 Channel 1 differential analog input | Secondary input for voltage measurement or auxiliary sensor channel with independent oversampling. |
| A2.0+/A2.0- | SD24 Channel 2 differential analog input | Third dedicated metrology input - supports neutral current or temperature compensation in 1-phase systems. |
| VREF | External reference voltage input | Accepts external precision reference (e.g., REF3033) to calibrate ADC full-scale; internal reference also available. |
| eUSCI_A0 pins (P1.2/P1.3) | UART/IrDA/SPI data I/O | Supports automatic baud-rate detection for legacy metering interfaces and IrDA remote configuration. |
| eUSCI_B0 pins (P1.6/P1.7) | I²C clock/data or SPI I/O | Enables connection to external EEPROM, RTC, or digital sensors (e.g., TMP117) using standard I²C protocol. |
| P2.3/VMONIN | Voltage monitor input | Dedicated analog input for supply rail monitoring - triggers brownout detection or low-battery alerts without ADC resource use. |
| RST/NMI/SBWTDIO | Reset / NMI / Spy-Bi-Wire I/O | Single-pin debug interface for programming and test; eliminates need for 4-wire JTAG header space. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LDO regulator | Delivers stable 1.8-V core supply from 2.2–3.6-V input - eliminates external LDO and reduces BOM count in space-constrained meters. |
| Programmable gain amplifier (PGA) | Configurable gain per SD24 channel (1×, 2×, 4×, 8×, 16×) - enables direct connection of shunt resistors or current transformers without external amplification. |
| Dual eUSCI modules | Independent UART/IrDA/SPI (eUSCI_A0) and SPI/I²C (eUSCI_B0) - supports concurrent communication with host MCU and peripheral sensors. |
| Built-in temperature sensor | On-die sensor with ±2°C accuracy - enables thermal drift compensation for ADC reference and gain calibration in wide-temperature deployments. |
| Supply voltage monitor (VMON) | Dedicated comparator with programmable threshold - provides hardware-level brownout detection and supply health reporting without software polling. |
Applications
| Smart Plug Energy Monitoring | Industrial DC Power Monitor |
|---|---|
Use Scenario: Real-time power consumption tracking in residential smart plugs with cloud reporting. IC Role / Device Role / Timing Role: Primary metrology controller performing simultaneous voltage/current sampling, RMS calculation, and kWh accumulation. Use Value: Three 24-bit SD24 channels enable concurrent line/neutral current and voltage measurement - eliminating need for external multiplexers or second MCUs. |
Use Scenario: Precision monitoring of DC output in telecom rectifiers and solar charge controllers. IC Role / Device Role / Timing Role: Analog front-end processor capturing DC voltage, current, and temperature with <100 ppm total error over –40°C to 85°C. Use Value: Internal PGA and programmable oversampling allow direct shunt-based current sensing at 0.1% accuracy without external op-amps or gain-setting resistors. |
| 1-Phase Electronic Meter | Medical Patient Parameter Logger |
Use Scenario: ANSI C12.20-compliant utility meter for residential billing with tamper detection. IC Role / Device Role / Timing Role: Metrology SoC handling analog acquisition, digital filtering, pulse generation (for LED/kWh pulses), and secure firmware updates. Use Value: 75 nA LPM4.5 shutdown current enables >10-year battery backup for real-time clock and critical register retention during main power loss. |
Use Scenario: Portable multi-parameter vital sign logger (ECG, SpO₂, temperature) with long battery life. IC Role / Device Role / Timing Role: Low-noise analog acquisition engine digitizing biopotential signals while maintaining sub-µV noise floor in active mode. Use Value: Differential SD24 inputs with 24-bit resolution and 128× oversampling achieve >100 dB SNR - sufficient for clinical-grade ECG waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metrology microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430I2030TRHBR | 16 KB Flash, 1 KB RAM vs. 32 KB Flash, 2 KB RAM in MSP430I2031TRHBR | Suitable for simpler firmware with minimal calibration tables or no OTA update capability | Select when application requires only basic energy accumulation and lacks complex tariff logic or secure boot requirements |
| MSP430I2041TRHBR | Four 24-bit SD24 ADCs vs. three in MSP430I2031TRHBR; identical package and pinout | Required for 2-phase or split-phase metering where four independent current/voltage channels are needed | Choose when expanding from 1-phase to 2-phase topology - same PCB layout but higher ADC channel count |
Compared with MSP430I2030TRHBR, the MSP430I2031TRHBR provides double the Flash/RAM for advanced metrology firmware and secure boot; compared with MSP430I2041TRHBR, it trades one SD24 channel for cost reduction while retaining identical package, pinout, and peripheral set - simplifying migration within the RHB footprint.
Availability
MSP430I2031TRHBR is available at Aetrix Electronics and suitable for smart plug energy monitoring, industrial DC power monitoring, and 1-phase electronic metering requiring stable component supply across production lifecycles.
Supply support for MSP430I2031TRHBR 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 decades of expertise in precision metrology and ultra-low-power design.
The MSP430I2031TRHBR belongs to the MSP430™ Metrology and Monitoring portfolio, engineered specifically for high-accuracy, battery-operated energy measurement applications including smart meters, submeters, and portable medical sensors.
FAQ
What is the maximum ADC sampling rate supported by the MSP430I2031TRHBR?
The MSP430I2031TRHBR's three SD24 modules support configurable oversampling ratios (OSR) up to 256. At OSR = 256 and internal reference, effective sampling rates reach 1.024 kSPS per channel - sufficient for 50/60 Hz power line harmonics analysis and Class 0.5 metering compliance. Each SD24 operates independently, allowing time-interleaved sampling across channels.
Does the MSP430I2031TRHBR support hardware encryption for secure firmware updates?
No, the MSP430I2031TRHBR does not include dedicated hardware cryptographic accelerators (e.g., AES, SHA). Secure firmware updates must be implemented in software using libraries such as TI's MSP430Ware™ Crypto Library, leveraging the hardware multiplier for efficient modular arithmetic - though this consumes additional CPU cycles and Flash resources compared to devices with crypto engines.
Can the MSP430I2031TRHBR operate from a single 3.0-V coin cell battery for extended periods?
Yes, the MSP430I2031TRHBR supports operation down to 2.2 V and draws only 75 nA in LPM4.5 shutdown mode at 3.0 V. With proper power gating and periodic wake-up intervals (e.g., 1-second sampling bursts), typical coin-cell (CR2032) lifetime exceeds 5 years in submetering applications - validated using TI's EVM430-I2040S reference design power profiling data.
What development tools are officially supported for the MSP430I2031TRHBR?
Texas Instruments officially supports the MSP430I2031TRHBR with the EVM430-I2040S evaluation module (EVM) for metering, the MSP-TS430RHB32A 100-pin target board, and the Energy Measurement Design Center software framework. Code Composer Studio™ IDE (v12.x+) with MSP430Ware™ v3.80+ provides device-specific drivers, calibration examples, and metrology reference code - all accessible via TI Resource Explorer.
Is the MSP430I2031TRHBR pin-compatible with other devices in the MSP430I20xx family?
Yes, the MSP430I2031TRHBR in the 32-pin RHB package shares identical pinout and electrical characteristics with MSP430I2041TRHBR and MSP430I2021TRHBR - including power, ground, analog inputs, and eUSCI signal assignments. NC pins differ across variants (e.g., A3.0± absent in MSP430I2031TRHBR), but their absence does not affect PCB layout compatibility or signal routing.
MSP430I2031TRHBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- MSP430I2xx
- Packaging:
- Tape & Reel (TR)
- 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:
MSP430I2031TRHBR FAQ
1.How can I place an order for MSP430I2031TRHBR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430I2031TRHBR 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 MSP430I2031TRHBR reliable?
The price and inventory of MSP430I2031TRHBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430I2031TRHBR is usually 5 days.
3.What payment methods are accepted for MSP430I2031TRHBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430I2031TRHBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430I2031TRHBR?
MSP430I2031TRHBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430I2031TRHBR 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 MSP430I2031TRHBR?
For technical support, including MSP430I2031TRHBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430I2031TRHBR requirements.
6.How does Aetrix verify that MSP430I2031TRHBR is sourced from the original manufacturer or authorized distributors?
All MSP430I2031TRHBR 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 MSP430I2031TRHBR meets industry standards.
7.What is the process for return or replacement of MSP430I2031TRHBR?
All MSP430I2031TRHBR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430I2031TRHBR, 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 MSP430I2031TRHBR part is unused and in its original packaging.
Return procedure for MSP430I2031TRHBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430I2031TRHBR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
