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Texas Instruments MSP430F67481IPEUR
- Part No.:
- MSP430F67481IPEUR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
MSP430F67481IPEUR.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,846
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Product details
Overview
MSP430F67481IPEUR from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring a 25-MHz ultra-low-power CPU, 512KB flash, 16KB RAM, four 24-bit sigma-delta ADCs, and support for ANSI C12.20/IEC 62053 compliance in utility revenue metering applications.
For engineers reviewing the MSP430F67481IPEUR datasheet, MSP430F67481IPEUR pinout, MSP430F67481IPEUR application, or MSP430F67481IPEUR equivalent, key selection considerations include its 128-pin LQFP (PEU) package, 90 I/O pins, 0.1% energy measurement accuracy over 2000:1 dynamic range, RTC with crystal offset calibration, and integrated LCD driver supporting up to 320 segments.
Technical Context
The MSP430F67481IPEUR implements TI's 24-bit sigma-delta ADC architecture with differential inputs and programmable gain for high-accuracy current/voltage sampling across three phases plus neutral. Its dedicated pulse output pins enable direct active/reactive energy calibration without external logic.
It integrates a password-protected real-time clock with temperature compensation and crystal offset calibration, alongside anti-tamper security modules, and supports flexible power supply switching between main and backup rails - enabling <0.34 µA RTC mode (LPM3.5) and 0.18 µA shutdown mode (LPM4.5) at 3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core CPU | 25-MHz MSP430 with 32-bit hardware multiplier for real-time energy calculations |
| Flash / RAM | 512KB single-cycle flash + 16KB single-cycle RAM for firmware and measurement buffers |
| Sigma-Delta ADCs | Four independent 24-bit SD24_B converters with differential inputs and variable gain per channel |
| Accuracy | <0.1% error over 2000:1 dynamic range for phase current, meeting ANSI C12.20 and IEC 62053 |
| Power Modes | LPM3: 2.1 µA; LPM3.5 (RTC): 0.34 µA; LPM4.5 (shutdown): 0.18 µA - all at 3 V |
| LCD Driver | Supports up to 320 segments with contrast control, operating at 3 µA in LPM3 during AC mains failure |
| Package | 128-pin LQFP (PEU), 20 mm × 14 mm, with 90 general-purpose I/O pins |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / XOUT | Low-frequency crystal oscillator input/output | Drives 32.768-kHz RTC crystal; supports crystal offset calibration and temperature compensation |
| RTCCAP0 / RTCCAP1 | RTC load capacitor terminals | Enable external capacitor connection for precise RTC timing stability and drift correction |
| SD0P0–SD3N0 | Delta-sigma ADC analog inputs (Phase A–C + Neutral) | Dedicated differential pairs for shunt/CT-based current sensing with >100 dB SNR |
| VREF | Reference voltage input | Accepts external precision reference (e.g., 2.5 V) for ADC full-scale calibration and temperature-compensated measurements |
| PULSE_A / PULSE_R | Dedicated energy pulse outputs | Hardware-generated active/reactive energy pulses for meter calibration and tariff verification |
| COM0–COM7 | LCD segment common outputs | Drive up to 8 commons for 320-segment LCD display with software-configurable bias and frame rate |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase shift in real time, enabling accurate four-quadrant power measurement per phase |
| Four-quadrant energy calculation | Measures active/reactive power in all quadrants independently per phase or cumulatively - essential for bidirectional grid applications |
| Temperature-compensated RTC | Retains ±2 ppm accuracy across –40°C to +85°C via on-chip temperature sensor and lookup-table calibration |
| Anti-tamper security modules | Includes tamper detect pins, secure boot, and password-protected registers to prevent unauthorized firmware or configuration changes |
| Flexible communication interfaces | Six eUSCI ports configurable as UART, SPI, or I²C - supports HAN, PLC, RF, and optical AMI module integration |
Applications
| Smart Utility Meter | Energy Monitoring Gateway |
|---|---|
Use Scenario: Revenue-grade 3-phase 4-wire meter deployed by electric utilities for residential/commercial billing. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time energy accumulation, tariff management, and secure data logging. Use Value: Enables ANSI/IEC-compliant metering with <0.1% error over 2000:1 dynamic range and automatic line frequency adaptation (40–70 Hz). | Use Scenario: Edge gateway aggregating consumption data from multiple submeters in commercial buildings or microgrids. IC Role / Device Role / Timing Role: Local processing node executing harmonic analysis, demand response logic, and time-stamped event logging. Use Value: Leverages on-chip 24-bit ADCs and 512KB flash to store multi-day waveform snapshots and perform real-time PQ analysis without host dependency. |
| Industrial Power Quality Analyzer | Renewable Energy Interconnection Monitor |
Use Scenario: Portable or panel-mounted device measuring THD, flicker, unbalance, and transients in industrial facilities. IC Role / Device Role / Timing Role: High-precision acquisition engine synchronizing voltage/current sampling across all phases using shared clock domain. Use Value: Achieves >95 dB SNR and exact phase angle measurement - critical for IEEE 519-compliant harmonic reporting. | Use Scenario: Grid-tied solar/wind inverter monitor verifying anti-islanding, voltage/frequency ride-through, and export compliance. IC Role / Device Role / Timing Role: Independent verification unit cross-checking inverter-reported metrics against direct analog measurements. Use Value: Uses dedicated pulse outputs and four-quadrant math to validate bidirectional energy flow and reactive power injection limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67471IPEUR | 256KB flash, 32KB RAM, same 4× SD24_B ADCs and pinout | Lower flash capacity limits complex tariff or communication stack deployment | Select when firmware footprint is constrained but full metrology performance and memory bandwidth are retained |
| MSP430F67681IPEUR | 512KB flash, 16KB RAM, six 24-bit SD24_B ADCs, identical package | Higher ADC count enables simultaneous neutral monitoring and auxiliary sensor channels | Select when expanding beyond 3-phase+neutral to include DC-link or PV-side monitoring in hybrid meters |
Compared with MSP430F67471IPEUR, the MSP430F67481IPEUR provides double flash for advanced firmware features like OTA updates or extended diagnostics; compared with MSP430F67681IPEUR, it trades two ADC channels for lower system cost while retaining full metrology accuracy and communication flexibility.
Availability
MSP430F67481IPEUR is available at Aetrix Electronics and suitable for smart utility metering, industrial energy monitoring, and renewable interconnection verification requiring stable component supply and long-term lifecycle support.
Supply support for MSP430F67481IPEUR 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 for industrial, automotive, and consumer applications.
The MSP430F674x1 product line is engineered specifically for revenue-grade polyphase electricity meters, integrating metrology-grade ADCs, secure real-time clocks, and low-power operation to minimize battery backup requirements and extend field lifetime.
FAQ
What is the maximum dynamic range supported by the MSP430F67481IPEUR for current measurement?
The MSP430F67481IPEUR achieves <0.1% measurement error over a 2000:1 dynamic range for phase current, validated per ANSI C12.20 and IEC 62053 standards. This performance is enabled by its four 24-bit sigma-delta ADCs with programmable gain and digital phase correction - allowing accurate sampling from milliamp-level standby loads to hundreds-of-amps peak currents without range switching.
Does the MSP430F67481IPEUR support hardware-accelerated energy calculations?
Yes, the MSP430F67481IPEUR includes a dedicated 32-bit hardware multiplier and optimized instruction set that executes TI's energy measurement software library in real time. This enables concurrent active/reactive/apparent energy accumulation, four-quadrant power computation, and RMS voltage/current calculation - all without offloading to external processors or compromising low-power operation.
Can the MSP430F67481IPEUR operate during AC mains failure?
Yes, the MSP430F67481IPEUR supports ultra-low-power operation during AC mains failure: LCD remains functional at 3 µA in LPM3, RTC continues timekeeping at 0.34 µA in LPM3.5, and full shutdown draws only 0.18 µA in LPM4.5 - preserving backup battery life for >10 years in typical meter deployments.
What communication interfaces does the MSP430F67481IPEUR provide for AMI integration?
The MSP430F67481IPEUR integrates six enhanced USCI (eUSCI) modules configurable as UART, SPI, or I²C. This allows concurrent connection to PLC modems (UART), optical port readers (UART/I²C), and RF mesh nodes (SPI), supporting multi-interface AMI backhaul without external bridge ICs or protocol translation.
Is the MSP430F67481IPEUR pin-compatible with other devices in the F674x1 family?
Yes, all MSP430F674x1 variants in the 128-pin LQFP (PEU) package - including MSP430F67451IPEUR through MSP430F67491IPEUR - share identical pinouts and mechanical footprints. This enables scalable design reuse: firmware and PCB layouts can be maintained across flash/RAM/ADC configurations with only BOM-level changes.
MSP430F67481IPEUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 4x24b Sigma Delta Converter
- Number of I/O:
- 90
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F67481IPEUR FAQ
1.How can I place an order for MSP430F67481IPEUR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67481IPEUR 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 MSP430F67481IPEUR reliable?
The price and inventory of MSP430F67481IPEUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67481IPEUR is usually 5 days.
3.What payment methods are accepted for MSP430F67481IPEUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67481IPEUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67481IPEUR?
MSP430F67481IPEUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67481IPEUR 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 MSP430F67481IPEUR?
For technical support, including MSP430F67481IPEUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67481IPEUR requirements.
6.How does Aetrix verify that MSP430F67481IPEUR is sourced from the original manufacturer or authorized distributors?
All MSP430F67481IPEUR 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 MSP430F67481IPEUR meets industry standards.
7.What is the process for return or replacement of MSP430F67481IPEUR?
All MSP430F67481IPEUR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67481IPEUR, 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 MSP430F67481IPEUR part is unused and in its original packaging.
Return procedure for MSP430F67481IPEUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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