My Inquiry
My Account
Texas Instruments MSP430I2031TPWR
- Part No.:
- MSP430I2031TPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430I2031TPWR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,727
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430I2031TPWR 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 across 2.2 V–3.6 V, delivers 275 µA/MHz active current at 16.384 MHz, and supports wake-up from LPM3 in 1 µs - enabling battery-powered smart plugs and submetering nodes.
For engineers reviewing the MSP430I2031TPWR datasheet, MSP430I2031TPWR pinout, MSP430I2031TPWR application, or MSP430I2031TPWR equivalent, this page provides verified package mapping (28-pin TSSOP), validated ADC performance specs, confirmed eUSCI_A0/eUSCI_B0 peripheral configuration, and two field-tested alternative MCUs for metrology-grade designs.
Technical Context
The MSP430I2031TPWR implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) tunable to 16.384 MHz using internal or external resistor control. Its clock system supports ACLK, SMCLK, and MCLK domains with programmable source selection and bypass capability via P2.0/CLKIN.
Three independent 24-bit sigma-delta ADC modules (SD24) provide differential PGA inputs with configurable gain and oversampling, while dual eUSCI modules deliver UART/IrDA/SPI (eUSCI_A0) and SPI/I²C (eUSCI_B0) - all synchronized to the same low-power timing architecture supporting five operating modes including LPM4.5 (75 nA shutdown).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators for high code efficiency in metering firmware. |
| ADC Resolution & Count | Three independent 24-bit sigma-delta ADCs with differential PGA inputs - enables simultaneous voltage/current/neutral sensing in single-phase meters. |
| 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. |
| Active Mode Current | 275 µA/MHz at 3.0 V - allows real-time DSP-based energy calculation at 16.384 MHz while maintaining <1 mA total system draw. |
| Low-Power Modes | LPM3 (210 µA), LPM4 (70 µA), LPM4.5 (75 nA) - supports >10-year battery life in standby metering applications. |
| Communication Peripherals | eUSCI_A0 (UART/IrDA/SPI) + eUSCI_B0 (SPI/I²C) - enables dual-interface communication for host MCU coordination and sensor bus integration. |
| Package & Pin Count | 28-pin TSSOP (PW), 9.7 mm × 4.4 mm footprint - suitable for compact PCB layouts in DIN-rail and outlet-integrated metering hardware. |
Pinout & Package
28-pin TSSOP (PW) package with 0.65 mm pitch; thermal pad not present; body size 9.7 mm × 4.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0.0+/A0.0- | SD24 analog input pair | Differential input channel 0 for high-accuracy current sensing with PGA gain control. |
| A1.0+/A1.0- | SD24 analog input pair | Differential input channel 1 for voltage measurement with programmable reference coupling. |
| A2.0+/A2.0- | SD24 analog input pair | Differential input channel 2 for neutral or auxiliary signal acquisition in 2-phase metering. |
| VREF | External reference input | Accepts external precision reference (e.g., REF3025) to calibrate ADC full-scale independently of supply rail. |
| RST/NMI/SBWTDIO | Reset / NMI / debug I/O | Single-pin Spy-Bi-Wire interface for programming and debugging - eliminates need for 4-wire JTAG header space. |
| P1.0–P1.7, P2.0–P2.3 | GPIO with peripheral multiplexing | 16 total I/O pins; each supports timer capture/compare, eUSCI signals, or general-purpose digital functions with interrupt capability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LDO core regulator | Provides stable 1.8 V VCORE from 2.2–3.6 V VCC - eliminates external LDO and simplifies power sequencing in battery-powered designs. |
| Built-in temperature sensor | Enables on-chip thermal compensation of ADC offset/gain drift - critical for Class 0.5 metering accuracy over industrial temperature range. |
| Hardware multiplier (16×16) | Accelerates RMS, harmonic, and power factor calculations in firmware - reduces CPU load and improves sampling throughput. |
| Programmable brownout detector | Prevents erratic operation during battery voltage sag by triggering reset before flash corruption or ADC misreads occur. |
| Wake-up time from LPM3 | 1 µs latency to active mode - allows rapid response to event-triggered sampling (e.g., zero-crossing detection) without sacrificing sleep efficiency. |
Applications
| Smart Plug Energy Monitoring | Industrial Submetering Node |
|---|---|
Use Scenario: Real-time power consumption tracking in residential/commercial smart outlets with BLE or Wi-Fi connectivity. IC Role / Device Role / Timing Role: Primary metrology controller performing simultaneous voltage/current sampling, RMS computation, and energy accumulation. Use Value: Three 24-bit SD24 ADCs enable concurrent phase-neutral measurements with <±0.1% error, meeting IEC 62053-21 Class B requirements. |
Use Scenario: Retrofit submetering in HVAC or lighting panels where space and battery life constrain design. IC Role / Device Role / Timing Role: Standalone sensor hub acquiring analog inputs from CTs and PTs, then transmitting data via RS-485 or LoRaWAN. Use Value: LPM4.5 current (75 nA) extends 10-year battery life; integrated LDO removes need for external regulators in compact enclosures. |
| Medical Patient Monitor Sensor Interface | DC Power Supply Health Monitoring |
Use Scenario: Multi-parameter vital sign acquisition (ECG, SpO₂, respiration) in portable clinical devices. IC Role / Device Role / Timing Role: Analog front-end processor digitizing low-noise biopotential signals with high common-mode rejection. Use Value: Differential PGA inputs on all three SD24 channels suppress noise in millivolt-range biomedical signals without external instrumentation amps. |
Use Scenario: In-field monitoring of telecom or server PSU output stability and ripple under dynamic load conditions. IC Role / Device Role / Timing Role: Precision DC voltage/current logger interfacing with shunt resistors and isolated amplifiers. Use Value: 24-bit resolution captures <10 µV changes across 0–30 V range; internal reference ensures accuracy independent of supply variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metrology microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430I2030TPWR | 16 KB Flash / 1 KB RAM vs. 32 KB / 2 KB; identical ADC count, peripherals, and package. | Suitable for cost-sensitive designs with smaller firmware footprints and reduced data logging depth. | Select when application firmware fits within 16 KB and no future feature expansion is planned. |
| MSP430I2041TPWR | Adds fourth 24-bit SD24 ADC channel; otherwise identical Flash/RAM, peripherals, and pinout in same 28-pin TSSOP. | Required for 3-phase metering or applications needing redundant sensing paths for safety-critical validation. | Choose when fourth ADC channel is needed for neutral current, temperature redundancy, or auxiliary sensor fusion. |
Compared with MSP430I2030TPWR, the MSP430I2031TPWR offers double Flash/RAM for complex metrology algorithms and firmware updates; compared with MSP430I2041TPWR, it trades one SD24 channel for lower unit cost while retaining full peripheral compatibility and layout reuse.
Availability
MSP430I2031TPWR is available at Aetrix Electronics and suitable for smart plug energy monitoring, industrial submetering nodes, and medical patient monitor sensor interfaces requiring stable component supply and long-term production continuity.
Supply support for MSP430I2031TPWR 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 for industrial, automotive, and consumer markets.
The MSP430™ Metrology and Monitoring portfolio - including the MSP430I2031TPWR - is engineered specifically for high-accuracy, ultra-low-power energy measurement and sensor signal conditioning in battery-operated and mains-powered metering systems.
FAQ
What is the maximum system clock frequency supported by the MSP430I2031TPWR?
The MSP430I2031TPWR supports a maximum system clock frequency of 16.384 MHz, achieved via its internal digitally controlled oscillator (DCO). This frequency is factory-trimmed and can be maintained using either internal or external resistor calibration. The DCO enables fast wake-up from low-power modes and deterministic timing for metrology sampling intervals in the MSP430I2031TPWR.
Does the MSP430I2031TPWR include an internal voltage reference for ADC operation?
Yes, the MSP430I2031TPWR includes an internal voltage reference that can be selected for SD24 ADC operation via the SD24REFS bit. When enabled, the internal reference drives the VREF pin - which must not be externally loaded - and provides stable scaling for all three 24-bit sigma-delta converters. External reference operation is also supported via the VREF pin.
How many GPIO pins does the MSP430I2031TPWR provide in the 28-pin TSSOP package?
The MSP430I2031TPWR in the 28-pin TSSOP (PW) package provides 16 GPIO pins: P1.0 through P1.7 and P2.0 through P2.3. All support peripheral multiplexing (eUSCI, timers, ADC triggers) and individual interrupt capability. Pins P2.4–P2.7 are not bonded in this package variant and are unavailable for use.
Can the MSP430I2031TPWR operate from a single 3.3 V supply without external regulators?
Yes, the MSP430I2031TPWR integrates an LDO that generates a regulated 1.8 V VCORE from a single 2.2–3.6 V VCC supply. No external core regulator is required. The device draws current only from VCC and AVSS/DVSS ground planes, simplifying power design for compact metering PCBs using the MSP430I2031TPWR.
What debug interface does the MSP430I2031TPWR support, and what pins are required?
The MSP430I2031TPWR supports Spy-Bi-Wire (SBW) debug and programming using two dedicated pins: RST/NMI/SBWTDIO (pin 15) and TEST/SBWTCK (pin 16). This 2-wire interface replaces full 4-wire JTAG, reducing PCB footprint and connector cost while maintaining full flash programming, breakpoint, and register visibility capabilities for the MSP430I2031TPWR.
MSP430I2031TPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- 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:
- 12
- 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:
MSP430I2031TPWR FAQ
1.How can I place an order for MSP430I2031TPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430I2031TPWR 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 MSP430I2031TPWR reliable?
The price and inventory of MSP430I2031TPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430I2031TPWR is usually 5 days.
3.What payment methods are accepted for MSP430I2031TPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430I2031TPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430I2031TPWR?
MSP430I2031TPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430I2031TPWR 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 MSP430I2031TPWR?
For technical support, including MSP430I2031TPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430I2031TPWR requirements.
6.How does Aetrix verify that MSP430I2031TPWR is sourced from the original manufacturer or authorized distributors?
All MSP430I2031TPWR 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 MSP430I2031TPWR meets industry standards.
7.What is the process for return or replacement of MSP430I2031TPWR?
All MSP430I2031TPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430I2031TPWR, 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 MSP430I2031TPWR part is unused and in its original packaging.
Return procedure for MSP430I2031TPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430I2031TPWR 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…
