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Texas Instruments MSP430F67451AIPEU
- Part No.:
- MSP430F67451AIPEU
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
MSP430F67451AIPEU.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,299
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Product details
Overview
MSP430F67451AIPEU from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring four 24-bit sigma-delta ADCs, 128KB flash, 16KB RAM, and ultra-low-power operation (0.18 µA in LPM4.5). It supports ANSI C12.20 and IEC 62053 compliance, 4-quadrant energy measurement, and integrated LCD driver for up to 320 segments.
For engineers reviewing the MSP430F67451AIPEU datasheet, MSP430F67451AIPEU pinout, MSP430F67451AIPEU application, or MSP430F67451AIPEU equivalent, key selection criteria include metrology accuracy (<0.1% over 2000:1 dynamic range), phase-angle measurement capability, RTC with tamper detection, and support for current transformers, Rogowski coils, or shunt sensors in utility-grade metering systems.
Technical Context
The MSP430F67451AIPEU implements a dedicated metrology subsystem with four independent SD24_B sigma-delta modulators-each with differential inputs and programmable gain-feeding into a high-precision digital processing pipeline. Its 25-MHz CPU includes a 32-bit hardware multiplier optimized for real-time energy calculations including active/reactive power, apparent power, and harmonic analysis.
It integrates dual-domain power management: analog supply rails (AVCC, VASYS) for metrology ADCs and reference circuits, and digital domains (DVCC, VCORE) with multiple low-power modes (LPM3: 2.1 µA; LPM3.5: 0.34 µA; LPM4.5: 0.18 µA), enabling extended backup operation during AC mains failure while retaining RTC and critical registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 128 KB single-cycle flash - sufficient for full metrology firmware, calibration tables, and communication stacks without external storage. |
| RAM | 16 KB single-cycle RAM - supports real-time buffering of ADC samples, FFT computation, and multi-tariff billing data. |
| Sigma-Delta ADCs | 4 × 24-bit SD24_B converters - enables simultaneous voltage/current sampling across three phases plus neutral with <0.1% error over 2000:1 dynamic range. |
| Line Frequency Range | 40–70 Hz - covers global utility frequencies (50/60 Hz) with single calibration, eliminating region-specific firmware variants. |
| Low-Power Mode (LPM4.5) | 0.18 µA at 3 V - allows >1-year battery-backed RTC and tamper logging during mains outage with minimal energy storage. |
| LCD Driver | Up to 320 segments with contrast control - drives standard utility meter displays without external segment drivers. |
| Communication Interfaces | 4 × eUSCI_A (UART/IrDA/SPI) + 2 × eUSCI_B (SPI/I²C) - supports HAN, PLC, optical port, and secure module interfaces concurrently. |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 90 usable I/O pins. Thermal pad exposed on underside per TI mechanical data.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 | Differential input pair for SD24_B channel 0 | Accepts shunt- or CT-based current sensing with programmable gain; referenced to AVSS1/AVSS2. |
| VREF | Reference voltage input for sigma-delta modulators | Accepts external 2.5 V reference or internal buffered reference; critical for metrology accuracy stability. |
| COM0–COM7 | LCD common outputs | Drive up to 8 multiplexed LCD commons; used with segment pins (e.g., P1.6/COM2) for 320-segment display. |
| RST/NMI/SBWTDIO | Reset, non-maskable interrupt, JTAG debug I/O | Single-pin multifunction interface for production programming, field firmware updates, and debug access. |
| XIN / XOUT | 32.768 kHz crystal oscillator terminals | Connects to external tuning-fork crystal for RTC; supports crystal offset calibration and temperature compensation. |
| VCORE | Digital core supply (1.8 V nominal) | Must be regulated separately; powers CPU, DMA, and digital peripherals; decoupling required per TI layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| 4-quadrant energy measurement | Enables bidirectional power flow monitoring (generation/consumption) per phase for net-metering and distributed energy applications. |
| Password-protected RTC with tamper detection | Prevents unauthorized clock manipulation; logs tamper events to secure memory; supports crystal calibration for ±1 ppm accuracy. |
| Dedicated pulse output pins | Hardware-generated active/reactive energy pulses (e.g., S0/S1) meet ANSI C12.18 optical port requirements without CPU intervention. |
| Digital phase correction | Compensates CT phase lag in real time using configurable digital filters - eliminates external analog compensation components. |
| Temperature-compensated energy measurement | Uses on-chip temperature sensor and lookup tables to correct metrology errors across –40°C to +85°C operating range. |
Applications
| Smart Electricity Meter | Revenue-Grade Submetering |
|---|---|
|
Use Scenario: Installed in residential/commercial 3-phase 4-wire service entrances to measure kWh, kVARh, and demand. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time sampling, calculation, and secure data storage with tamper-proof RTC. Use Value: Meets ANSI C12.20 Class 0.2 accuracy over 2000:1 dynamic range, enabling revenue-grade billing without external calibration hardware. |
Use Scenario: Embedded in panel-level submeters tracking energy consumption per circuit or tenant in multi-tenant buildings. IC Role / Device Role / Timing Role: Standalone metering node with isolated analog front-end, LCD display, and RS-485 communication via eUSCI_A. Use Value: Four SD24_B ADCs allow concurrent measurement of three phases + neutral, supporting load profiling and anomaly detection. |
| Grid Edge Monitoring Node | AMI Endpoint with Tamper Security |
|
Use Scenario: Deployed at distribution transformers or feeder points to monitor voltage sag/swell, harmonics, and power quality. IC Role / Device Role / Timing Role: High-accuracy sensor fusion hub integrating metrology, RTC timestamping, and secure event logging. Use Value: Exact phase-angle measurements and 24-bit resolution enable IEEE 1459-compliant power quality analytics without external DSP. |
Use Scenario: Smart meter endpoint communicating via PLC or RF mesh, requiring cryptographic integrity and physical tamper response. IC Role / Device Role / Timing Role: Secure metering controller with password-protected RTC, tamper-detect GPIOs, and encrypted firmware update support. Use Value: Integrated security modules and tamper-detection logic eliminate need for discrete secure elements in cost-sensitive AMI deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67461AIPEU | 256 KB flash, 32 KB RAM, same 4-channel SD24_B ADC and package | Supports larger firmware (e.g., DLMS/COSEM stack + OTA updates) and extended data logging buffers | Select when firmware complexity or data retention duration exceeds MSP430F67451AIPEU capacity |
| MSP430F67471AIPEU | 256 KB flash, 32 KB RAM, adds third eUSCI_A instance (5 total UART/SPI ports) | Enables concurrent HAN, PLC, and optical port communication without multiplexing or external bridges | Select when multi-interface concurrency is required and additional flash/RAM margin is beneficial |
Compared with MSP430F67451AIPEU, the MSP430F67461AIPEU offers double flash/RAM for advanced firmware features, while the MSP430F67471AIPEU adds a fifth eUSCI_A for parallel communication-both retain identical metrology performance, pinout, and LQFP-128 packaging.
Availability
MSP430F67451AIPEU is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade submetering, and grid-edge monitoring applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.
Supply support for MSP430F67451AIPEU 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 emphasis on energy efficiency, reliability, and system integration.
The MSP430F67451AIPEU belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for high-accuracy, low-power energy measurement in utility-grade smart meters and industrial power monitors.
FAQ
What metrology standards does the MSP430F67451AIPEU support?
The MSP430F67451AIPEU meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-21/22 accuracy requirements. Its 24-bit sigma-delta ADCs achieve <0.1% error over 2000:1 dynamic range, and digital phase correction ensures compliance with CT-based measurement tolerances across temperature and line frequency variations.
Does the MSP430F67451AIPEU include an integrated RTC with battery backup capability?
Yes, the MSP430F67451AIPEU integrates a password-protected real-time clock with tamper detection, crystal offset calibration, and temperature compensation. In LPM3.5 mode, it consumes only 0.34 µA at 3 V, enabling multi-year operation on a coin-cell battery during AC mains failure.
How many independent sigma-delta ADC channels does the MSP430F67451AIPEU provide?
The MSP430F67451AIPEU provides four independent 24-bit SD24_B sigma-delta ADC channels, each with differential inputs and programmable gain. This configuration supports simultaneous sampling of three-phase voltage/current plus neutral in 3-phase 4-wire metering topologies.
What communication interfaces are available on the MSP430F67451AIPEU?
The MSP430F67451AIPEU integrates six enhanced universal serial communication interfaces: four eUSCI_A modules (supporting UART, IrDA, SPI) and two eUSCI_B modules (supporting SPI and I²C). These enable concurrent optical port, PLC modem, HAN, and secure module communication without external bridging.
Is the MSP430F67451AIPEU pin-compatible with other devices in the MSP430F67xx1A family?
Yes, the MSP430F67451AIPEU shares identical 128-pin LQFP (PEU) packaging and pinout with all F674x1A, F676x1A, and F677x1A variants in the same package option. Signal mapping (e.g., SD0P0, COM0, XIN) is consistent, enabling hardware reuse across firmware-scaled variants.
MSP430F67451AIPEU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K 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:
MSP430F67451AIPEU FAQ
1.How can I place an order for MSP430F67451AIPEU through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67451AIPEU 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 MSP430F67451AIPEU reliable?
The price and inventory of MSP430F67451AIPEU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67451AIPEU is usually 5 days.
3.What payment methods are accepted for MSP430F67451AIPEU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67451AIPEU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67451AIPEU?
MSP430F67451AIPEU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67451AIPEU 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 MSP430F67451AIPEU?
For technical support, including MSP430F67451AIPEU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67451AIPEU requirements.
6.How does Aetrix verify that MSP430F67451AIPEU is sourced from the original manufacturer or authorized distributors?
All MSP430F67451AIPEU 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 MSP430F67451AIPEU meets industry standards.
7.What is the process for return or replacement of MSP430F67451AIPEU?
All MSP430F67451AIPEU units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67451AIPEU, 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 MSP430F67451AIPEU part is unused and in its original packaging.
Return procedure for MSP430F67451AIPEU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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