My Inquiry
My Account
Texas Instruments MSP430I2041TPW
- Part No.:
- MSP430I2041TPW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430I2041TPW.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,103
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430I2041TPW 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, a 16.384-MHz DCO clock system, two eUSCI modules (UART/IrDA/SPI/I²C), two 16-bit timers, hardware multiplier, and 32 KB flash/2 KB RAM - all in a 28-pin TSSOP package. It operates across 2.2–3.6 V and supports sub-µA shutdown mode for battery-powered metering.
For engineers reviewing the MSP430I2041TPW datasheet, MSP430I2041TPW pinout, MSP430I2041TPW application, or MSP430I2041TPW equivalent, this page delivers verified technical context, exact pin functions, low-power mode current values, ADC performance boundaries, and validated alternative options for metrology-grade embedded designs.
Technical Context
The MSP430I2041TPW implements a 16-bit RISC CPU with constant generators and five low-power modes (LPM0–LPM4.5), enabling wake-up from LPM4 in 1 µs and LPM4.5 in <45 µs. Its analog subsystem centers on four independent SD24 modules, each supporting programmable gain (1×–128×), differential input pairs, and internal/external reference selection.
Digital peripherals include eUSCI_A0 (UART/IrDA/SPI) and eUSCI_B0 (SPI/I²C), both supporting multi-master I²C and automatic baud-rate detection in UART mode. The integrated LDO supplies a regulated 1.8-V core voltage, while the supply monitor, brownout detector, and temperature sensor support autonomous power integrity management in unattended metering deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables high code efficiency for compact firmware in resource-constrained metering applications. |
| ADC Resolution & Count | Four independent 24-bit sigma-delta ADCs with differential PGA inputs; supports simultaneous high-precision current/voltage/temperature sensing in single-phase meters. |
| Supply Voltage Range | 2.2 V to 3.6 V; compatible with standard 3.3-V industrial rails and coin-cell backup configurations without external regulators. |
| Low-Power Shutdown Current | 75 nA at 3.0 V (LPM4.5); extends battery life to >10 years in tamper-proof smart plugs or submeters with infrequent wake-ups. |
| Wake-up Time from LPM4 | 1 µs; ensures rapid response to event-triggered measurements (e.g., surge detection) without sacrificing energy efficiency. |
| Flash / RAM | 32 KB flash / 2 KB RAM; sufficient for certified metrology algorithms (e.g., IEC 62053-compliant active/reactive energy calculation) plus communication stack. |
| Package | 28-pin TSSOP (PW), 9.7 mm × 4.4 mm body; surface-mount compatible with automated assembly and fits compact PCB footprints in DIN-rail or outlet-integrated designs. |
Pinout & Package
28-pin TSSOP (PW) package with 0.65-mm pitch; thermal performance optimized for ambient temperatures up to 85°C in enclosed metering enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0.0+ / A0.0− | SD24 Analog Input Pair | Differential input channel 0 for primary current sensing; requires matched PCB routing and AVSS termination per TI layout guidelines. |
| A1.0+ / A1.0− | SD24 Analog Input Pair | Differential input channel 1 for voltage sensing; supports external resistor-based gain configuration up to 128× for mV-level signals. |
| A2.0+ / A2.0− | SD24 Analog Input Pair | Differential input channel 2 for auxiliary measurement (e.g., neutral current or temperature via RTD); shares same PGA and reference path as A0/A1. |
| A3.0+ / A3.0− | SD24 Analog Input Pair | Differential input channel 3 for fourth parameter (e.g., DC bus voltage or shunt calibration); enabled only on i204x variants (not i203x/i202x). |
| VREF | Reference Voltage Input | Accepts external 2.5-V reference or connects to internal 1.2-V bandgap; must be decoupled with 100-nF CVREF capacitor to AVSS when using internal reference. |
| RST/NMI/SBWTDIO | Reset / NMI / Debug I/O | Multi-function pin for cold reset, non-maskable interrupt, and Spy-Bi-Wire programming; requires 47-kΩ pullup + 10-nF pulldown for reliable startup. |
| P1.2/UCA0RXD | eUSCI_A0 UART RX | Asynchronous receive pin for RS-485 or optical isolation interfaces; supports automatic baud-rate detection for legacy metering protocols. |
| P1.6/UCB0SCL | eUSCI_B0 I²C Clock | Open-drain I²C clock output; drives external EEPROM or real-time clock with programmable slew rate control to meet I²C timing specs at 100/400 kHz. |
| P2.3/VMONIN | Voltage Monitor Input | Analog input for supply rail monitoring; triggers interrupt on undervoltage condition without CPU intervention, enabling fail-safe data retention. |
Key Features
| Feature | Design Value |
|---|---|
| Four 24-bit SD24 ADCs with PGA | Enables simultaneous high-resolution measurement of voltage, current, neutral current, and temperature in Class 0.5 or better electricity meters. |
| Integrated LDO (1.8 V core) | Eliminates need for external core regulator; reduces BOM count and improves PSRR against supply ripple in noisy AC environments. |
| eUSCI_A0 with IrDA encoder/decoder | Supports direct infrared communication with handheld readers per IEC 62056-21, avoiding external transceiver ICs and level shifters. |
| Hardware multiplier (16×16) | Accelerates fixed-point arithmetic for RMS, THD, and harmonic analysis in real time - critical for compliance with IEC 61000-4-7. |
| Supply voltage monitor + brownout detector | Guarantees safe flash write abort and RAM retention during grid sags, meeting IEC 62053-21 fault-tolerance requirements. |
Applications
| Single-Phase Energy Meter | Smart Power Strip |
|---|---|
|
Use Scenario: Residential or commercial electricity meter measuring active/reactive energy, voltage, current, and power factor over 10-year deployment. IC Role / Device Role / Timing Role: Primary metrology controller executing IEC 62053-21 compliant energy accumulation, with precise 24-bit ADC sampling synchronized to line frequency via TA1CLK. Use Value: Four SD24 channels enable concurrent phase voltage, line current, neutral current, and temperature acquisition - eliminating external multiplexers and reducing measurement latency by 30%. |
Use Scenario: UL-certified power strip with individual outlet control, energy logging, and overload protection. IC Role / Device Role / Timing Role: System-on-chip managing relay drivers, current sensing, USB-C PD negotiation, and BLE/Wi-Fi coexistence via UART/I²C. Use Value: Ultra-low 75-nA LPM4.5 current extends battery backup runtime to >5 years during mains outage, preserving configuration and last-read energy data. |
| Industrial Sensor Node | Medical Patient Monitor |
|
Use Scenario: Battery-powered DIN-rail sensor aggregating temperature, humidity, and vibration in factory automation. IC Role / Device Role / Timing Role: Low-power host processor acquiring analog sensor outputs via SD24, processing FFTs with hardware multiplier, and transmitting via UART to gateway. Use Value: Integrated temperature sensor and supply monitor enable self-calibration and health reporting without external components - reducing node BOM by 3 parts. |
Use Scenario: Portable multi-parameter monitor tracking ECG, SpO₂, and respiration in point-of-care settings. IC Role / Device Role / Timing Role: Analog front-end controller digitizing biopotential signals with 24-bit resolution and 120-dB SNR at 1-kSPS. Use Value: Differential PGA inputs reject common-mode noise from electrosurgical equipment, achieving >100 dB CMRR without external instrumentation amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metrology microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430I2040TPW | 16 KB flash / 1 KB RAM; identical ADC count, peripherals, and package; lower memory footprint. | Suitable for simpler metering firmware without harmonic analysis or extended data logging. | Select when firmware size <12 KB and no future algorithm expansion is planned. |
| MSP430I2031TPW | Three 24-bit SD24 ADCs; same 32 KB flash/2 KB RAM; lacks A3.0+/A3.0− inputs. | Valid for 2-channel metering (voltage + current) where neutral monitoring is not required. | Choose when fourth analog channel is unnecessary and cost reduction is prioritized over channel redundancy. |
Compared with MSP430I2041TPW, MSP430I2040TPW reduces memory capacity but retains full metrology peripheral set for cost-sensitive volume production, while MSP430I2031TPW trades one SD24 channel for identical memory - making it optimal for dual-input applications where space and BOM count constrain design margins.
Availability
MSP430I2041TPW is available at Aetrix Electronics and suitable for single-phase energy meters, smart power strips, and industrial sensor nodes requiring stable component supply, long-term lifecycle assurance, and TI-authorized traceability.
Supply support for MSP430I2041TPW 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 delivering analog, embedded processing, and connectivity solutions with deep expertise in low-power design and metrology IP.
The MSP430i204x product line targets high-accuracy, battery-operated measurement systems - specifically engineered for IEC 62053-compliant electricity meters, portable medical sensors, and industrial condition monitoring with minimal external components.
FAQ
What is the maximum sampling rate supported by each SD24 ADC in MSP430I2041TPW?
Each SD24 ADC in the MSP430I2041TPW supports up to 128 kSPS with oversampling ratio (OSR) = 1, or 1 kSPS at OSR = 256 for enhanced noise rejection. The actual achievable rate depends on gain setting, reference source, and digital filter configuration - with typical metrology use cases operating at 8–16 kSPS per channel for 24-bit effective resolution.
Does MSP430I2041TPW support JTAG debugging in the 28-pin TSSOP package?
Yes, MSP430I2041TPW supports Spy-Bi-Wire (SBW) debugging via pins RST/NMI/SBWTDIO (Pin 15) and TEST/SBWTCK (Pin 16) in the 28-pin TSSOP package. Full 4-wire JTAG is not available on PW; SBW provides complete flash programming and real-time debugging capability using TI's MSP-FET or compatible tools.
Can MSP430I2041TPW operate from a single 3.3-V supply without external regulators?
Yes, MSP430I2041TPW operates directly from a single 3.3-V supply applied to VCC. Its integrated LDO generates a regulated 1.8-V core voltage (VCORE), and all I/Os are 3.3-V tolerant. No external core regulator is needed - simplifying power design for compact metering PCBs.
What is the function of the ROSC pin on MSP430I2041TPW?
The ROSC pin on MSP430I2041TPW connects to an external resistor to set the frequency of the digitally controlled oscillator (DCO). When used in external resistor mode, a precision resistor between ROSC and AVSS configures DCO operation from 1–16.384 MHz. In internal resistor mode, ROSC must be tied to AVSS.
Is MSP430I2041TPW qualified for use in safety-critical metering applications?
Yes, MSP430I2041TPW is designed for compliance with IEC 62053-21 and ANSI C12.20 standards. Its built-in supply monitor, brownout detector, flash error correction, and watchdog timer support functional safety requirements in revenue-grade metering - though final certification depends on full system-level validation per IEC 61508 or IEC 62368-1.
MSP430I2041TPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- 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:
- 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:
MSP430I2041TPW FAQ
1.How can I place an order for MSP430I2041TPW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430I2041TPW 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 MSP430I2041TPW reliable?
The price and inventory of MSP430I2041TPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430I2041TPW is usually 5 days.
3.What payment methods are accepted for MSP430I2041TPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430I2041TPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430I2041TPW?
MSP430I2041TPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430I2041TPW 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 MSP430I2041TPW?
For technical support, including MSP430I2041TPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430I2041TPW requirements.
6.How does Aetrix verify that MSP430I2041TPW is sourced from the original manufacturer or authorized distributors?
All MSP430I2041TPW 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 MSP430I2041TPW meets industry standards.
7.What is the process for return or replacement of MSP430I2041TPW?
All MSP430I2041TPW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430I2041TPW, 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 MSP430I2041TPW part is unused and in its original packaging.
Return procedure for MSP430I2041TPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430I2041TPW 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…
