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Texas Instruments MSP430I2041TPWR
- Part No.:
- MSP430I2041TPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430I2041TPWR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:19,295
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Product details
Overview
MSP430I2041TPWR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller optimized for precision energy metering and sensor monitoring. It integrates four 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 supports 16 I/O pins in a 28-pin TSSOP package - enabling high-accuracy current/voltage sampling in single-phase smart meters.
For engineers reviewing the MSP430I2041TPWR datasheet, MSP430I2041TPWR pinout, MSP430I2041TPWR application, or MSP430I2041TPWR equivalent, key selection criteria include its quad 24-bit SD24 ADC architecture, LPM4.5 shutdown current of 75 nA, eUSCI_A0 UART/IrDA/SPI and eUSCI_B0 SPI/I²C interfaces, and support for metrology-grade analog front-end integration without external reference components.
Technical Context
The MSP430I2041TPWR implements a 16-bit RISC CPU with constant generators and hardware multiplier (16×16), paired with five low-power modes (AM, LPM3, LPM4, LPM4.5) to minimize active and standby power in battery-backed or energy-harvested metering systems. Its integrated LDO supplies a regulated 1.8-V core voltage, while the DCO achieves sub-5 µs wake-up from LPM4.
Four independent SD24 modules each support differential PGA inputs, programmable gain, and 256× oversampling - enabling simultaneous high-resolution measurement of voltage, current, neutral, and auxiliary channels. The device uses Spy-Bi-Wire for programming and debug, with no external programming voltage required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and hardware multiplier - enables efficient fixed-point DSP for real-time energy calculations |
| ADC Resolution & Count | Four independent 24-bit sigma-delta ADCs with differential PGA inputs - supports simultaneous multi-channel metrology sensing |
| Supply Voltage Range | 2.2 V to 3.6 V - compatible with standard Li-ion, coin-cell, and regulated 3.3-V rails in portable metering devices |
| Low-Power Shutdown | 75 nA in LPM4.5 mode at 3.0 V - extends battery life to years in always-on submetering applications |
| Communication Peripherals | eUSCI_A0 (UART/IrDA/SPI) + eUSCI_B0 (SPI/I²C) - provides dual serial interfaces for host MCU communication and sensor bus connectivity |
| Package & Pin Count | TSSOP-28 (PW) - 9.7 mm × 4.4 mm footprint with 16 GPIOs, optimized for compact PCB layouts in DIN-rail or plug-in meter designs |
| Internal Clock Source | 16.384-MHz digitally controlled oscillator (DCO) - eliminates need for external crystal while supporting precise time-based sampling |
Pinout & Package
Package: 28-pin TSSOP (PW), body size 9.7 mm × 4.4 mm. Thermal pad not present in PW variant; all pins are surface-mount with 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0.0+ / A0.0− | SD24 Channel 0 differential analog input | Primary voltage/current sensing pair with PGA gain control - requires matched trace routing and AVSS grounding per metrology layout guidelines |
| A1.0+ / A1.0− | SD24 Channel 1 differential analog input | Secondary channel for neutral or auxiliary measurement - shares same SD24 module timing and reference constraints as A0 |
| A2.0+ / A2.0− | SD24 Channel 2 differential analog input | Third independent metrology channel - supports 3-wire or split-phase configurations in single-phase AC metering |
| A3.0+ / A3.0− | SD24 Channel 3 differential analog input | Fourth channel for temperature, DC bias, or calibration reference - enables self-test and drift compensation |
| VREF | SD24 external reference input | Accepts external precision reference (e.g., REF3025); when unused, must be left open per TI design guidance |
| RST/NMI/SBWTDIO | Reset / NMI / Spy-Bi-Wire data I/O | Single-pin debug interface - enables in-system programming and real-time debugging without JTAG header |
| P1.0–P1.7, P2.0–P2.3 | General-purpose I/O with peripheral multiplexing | 16 total GPIOs; each supports timer capture/compare, eUSCI signals, or ADC trigger - configurable for flexible signal routing |
Key Features
| Feature | Design Value |
|---|---|
| Quad 24-bit SD24 ADCs with PGA | Enables simultaneous high-accuracy measurement of up to four analog channels with >100 dB SNR - critical for Class 0.2 and 0.5 electricity meters |
| Integrated LDO and voltage monitor | On-chip 1.8-V core regulator and VMONIN input eliminate external LDO and supply supervision ICs - reduces BOM count and layout area |
| Sub-5 µs wake-up from LPM4 | Allows rapid response to event-triggered sampling (e.g., zero-crossing detection) while maintaining µA-level sleep current - essential for burst-mode metering |
| eUSCI_A0 with IrDA encoder/decoder | Supports optical pulse reading and IR-based utility communication without external transceivers - simplifies compliance with DLMS/IEC 62056-21 |
| Hardware multiplier (16×16) | Accelerates RMS, THD, and energy accumulation calculations in firmware - reduces CPU load and improves deterministic latency for real-time metrology |
Applications
| Smart Plug Energy Monitoring | Industrial Power Quality Sensor |
|---|---|
|
Use Scenario: Real-time current, voltage, and active/reactive power measurement in consumer-grade smart plugs with BLE/Wi-Fi connectivity. IC Role / Device Role / Timing Role: Primary metrology controller performing synchronized 24-bit ADC sampling, RMS computation, and energy accumulation at 1–10 kHz rates. Use Value: Delivers Class 1 accuracy using internal reference and PGA, eliminating external precision op-amps and reference ICs - reducing total solution cost by ≥30%. |
Use Scenario: Compact DIN-rail mounted sensor measuring harmonics, flicker, and unbalance in factory motor drives and UPS systems. IC Role / Device Role / Timing Role: High-resolution analog front-end with four SD24 channels capturing phase A/B/C and neutral simultaneously under variable load conditions. Use Value: Quad ADC architecture enables true 4-channel synchronous sampling - avoids inter-channel skew errors that degrade THD and harmonic analysis fidelity. |
| Single-Phase Electronic Meter | Medical Patient Parameter Monitor |
|
Use Scenario: UL/EN 62053-compliant residential electricity meter with tamper detection, tariff switching, and LCD display. IC Role / Device Role / Timing Role: Main metrology SoC handling ADC acquisition, digital filtering, energy calculation, and secure data logging to flash memory. Use Value: Integrated LDO, brownout detector, and temperature sensor enable full metrology subsystem on one die - meets IEC 62053-21/22 long-term stability requirements. |
Use Scenario: Portable multi-parameter patient monitor measuring ECG, respiration, and skin temperature in point-of-care settings. IC Role / Device Role / Timing Role: Low-noise analog acquisition engine digitizing biopotential signals with 24-bit resolution and programmable gain amplification. Use Value: 75 nA LPM4.5 shutdown current allows >5-year battery life in always-ready mode - critical for clinical reliability and regulatory battery endurance certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metrology microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430I2041TRHB | Same core, 32-pin VQFN package with thermal pad and 4 additional GPIOs (P2.4–P2.7) | Preferred for higher I/O density or thermal-limited designs requiring enhanced heat dissipation | Select TRHB when board space permits larger footprint and thermal management is critical |
| MSP430I2040TPWR | Identical package and pinout, but with 16 KB flash / 1 KB RAM instead of 32 KB / 2 KB | Suitable for simpler metering firmware without advanced diagnostics or large data buffers | Choose TPWR when application code size fits within 16 KB and RAM usage stays below 1 KB |
Compared with MSP430I2041TRHB, the MSP430I2041TPWR trades thermal performance and two extra timers for compact TSSOP packaging; versus MSP430I2040TPWR, it doubles flash and RAM to support complex energy algorithms and secure firmware updates - making it optimal for certified Class 0.2 meters with extended feature sets.
Availability
MSP430I2041TPWR is available at Aetrix Electronics and suitable for smart plug energy monitoring, industrial power quality sensors, and single-phase electronic meters requiring stable component supply across multi-year production cycles.
Supply support for MSP430I2041TPWR 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 50 years of innovation in precision analog and low-power microcontrollers.
The MSP430I2041TPWR belongs to TI's Metrology and Monitoring portfolio - designed specifically for high-accuracy, ultra-low-power energy measurement in utility, industrial, and medical applications where long battery life and metrology-grade ADC performance are mandatory.
FAQ
What is the maximum ADC sampling rate supported by the MSP430I2041TPWR?
The MSP430I2041TPWR supports up to 256 kSPS aggregate sampling across its four 24-bit sigma-delta ADCs, with individual channel rates configurable up to 64 kSPS depending on oversampling ratio and filter settings. Each SD24 module operates independently, allowing concurrent sampling of voltage, current, neutral, and auxiliary signals without inter-channel delay - essential for accurate power factor and harmonic analysis in real-time metering applications.
Does the MSP430I2041TPWR require an external crystal oscillator?
No, the MSP430I2041TPWR does not require an external crystal. It features a factory-trimmed 16.384-MHz digitally controlled oscillator (DCO) that achieves ±1% accuracy over temperature and voltage, sufficient for metrology timing requirements. An external resistor on the ROSC pin can further stabilize DCO performance, but no crystal or ceramic resonator is needed - reducing bill-of-materials cost and PCB area in space-constrained metering designs.
How many GPIO pins are available on the MSP430I2041TPWR in TSSOP-28 package?
The MSP430I2041TPWR in the 28-pin TSSOP (PW) package provides 16 general-purpose I/O pins: P1.0 through P1.7 (8 pins) and P2.0 through P2.3 (4 pins), plus four dedicated analog input pairs (A0–A3) that are not counted as GPIOs. All 16 GPIOs support peripheral multiplexing including eUSCI signals, timer capture/compare, and interrupt capability - enabling flexible interface routing for UART, I²C, SPI, and external event triggers.
Can the MSP430I2041TPWR operate from a single 3.3-V supply?
Yes, the MSP430I2041TPWR operates fully from a single 3.3-V supply across its recommended range of 2.2 V to 3.6 V. Its integrated LDO generates a stable 1.8-V core voltage internally, while AVSS/DVSS share the same ground plane. This simplifies power design by eliminating separate analog/digital regulators - provided proper decoupling (100 nF ceramic + 1 µF tantalum per VCC pin) and separation of analog/digital ground traces per TI layout guidelines.
What development tools are officially supported for the MSP430I2041TPWR?
Texas Instruments officially supports the MSP430I2041TPWR with the EVM430-I2040S evaluation module for metering, the MSP-TS430RHB32A 100-pin target board, and MSP430Ware™ software libraries. Code Composer Studio™ IDE (desktop/cloud) includes device-specific drivers, energy measurement frameworks, and reference designs such as Single Phase Embedded Metering - enabling rapid prototyping of Class 0.2 compliant firmware with calibrated ADC and energy accumulation routines.
MSP430I2041TPWR 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 4x24b Sigma-Delta
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430I2041TPWR FAQ
1.How can I place an order for MSP430I2041TPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430I2041TPWR 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 MSP430I2041TPWR reliable?
The price and inventory of MSP430I2041TPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430I2041TPWR is usually 5 days.
3.What payment methods are accepted for MSP430I2041TPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430I2041TPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430I2041TPWR?
MSP430I2041TPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430I2041TPWR 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 MSP430I2041TPWR?
For technical support, including MSP430I2041TPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430I2041TPWR requirements.
6.How does Aetrix verify that MSP430I2041TPWR is sourced from the original manufacturer or authorized distributors?
All MSP430I2041TPWR 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 MSP430I2041TPWR meets industry standards.
7.What is the process for return or replacement of MSP430I2041TPWR?
All MSP430I2041TPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430I2041TPWR, 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 MSP430I2041TPWR part is unused and in its original packaging.
Return procedure for MSP430I2041TPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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