Overview
The MSP430F67791AIPZR is a highly integrated polyphase metering System-on-Chip (SoC) developed by Texas Instruments. This microcontroller (MCU) is part of the MSP430™ Metrology and Monitoring MCU portfolio, specifically designed for energy measurement and power monitoring applications, including smart grid and building automation. The MSP430F67791AIPZR offers high accuracy and low system cost with minimal external components, making it an ideal solution for advanced metering systems.
Key Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Texas Instruments |
| Package | 100-LQFP |
| Core Processor | CPUXV2 |
| Core Size | 16-Bit |
| Speed | 25 MHz |
| Program Memory Size | 512 KB (512K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 32 KB x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8 V ~ 3.6 V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Number of I/O | 62 |
| Connectivity | I2C, IrDA, LIN, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 7x24b Sigma Delta Converter |
| Data Converters | A/D 8x10b, Up to Seven Independent 24-Bit Sigma-Delta ADCs |
Key Features
- Accuracy < 0.1% Over 2000:1 Dynamic Range for Phase Current
- Meets or Exceeds ANSI C12.20 and IEC 62053 Standards
- Support for Multiple Sensors Such as Current Transformers, Rogowski Coils, or Shunts
- Power Measurement for up to Three Phases Plus Neutral
- Dedicated Pulse Output Pins for Active and Reactive Energy for Calibration
- 4-Quadrant Measurement per Phase or Cumulative
- Exact Phase-Angle Measurements
- Digital Phase Correction for Current Transformers
- Temperature-Compensated Energy Measurements
- 40-Hz to 70-Hz Line Frequency Range Using Single Calibration
- Flexible Power Supply Options With Automatic Switching
- Display Operates at Very Low Power During AC Mains Failure: 3 µA in LPM3
- LCD Driver With Contrast Control for up to 320 Segments
- Password-Protected Real-Time Clock (RTC) With Tamper Detection, Crystal Offset Calibration, and Temperature Compensation
- Integrated Security Modules to Support Anti‑Tamper
- Multiple Communication Interfaces for Smart Meter Implementations
- High-Performance Analog: Up to Seven Independent 24-Bit Sigma-Delta ADCs With Differential Inputs and Variable Gain
- 10-Bit 200-ksps SAR ADC With Six External Channels and Two Internal Channels, Including Supply and Temperature Sensor Measurement
Applications
The MSP430F67791AIPZR is designed for various energy measurement and power monitoring applications, including:
- Smart Grid Systems
- Building Automation
- Advanced Metering Infrastructure (AMI)
- Industrial Power Monitoring
- Residential and Commercial Energy Meters
Q & A
- What is the primary application of the MSP430F67791AIPZR?
The primary application of the MSP430F67791AIPZR is in energy measurement and power monitoring, particularly in smart grid and building automation systems.
- What are the key features of the MSP430F67791AIPZR in terms of accuracy and standards compliance?
The MSP430F67791AIPZR offers accuracy < 0.1% over a 2000:1 dynamic range for phase current and meets or exceeds ANSI C12.20 and IEC 62053 standards.
- What types of sensors does the MSP430F67791AIPZR support?
The MSP430F67791AIPZR supports multiple sensors such as current transformers, Rogowski coils, or shunts.
- What is the power measurement capability of the MSP430F67791AIPZR?
The MSP430F67791AIPZR can measure power for up to three phases plus neutral.
- What are the communication interfaces available on the MSP430F67791AIPZR?
The MSP430F67791AIPZR features multiple communication interfaces including I2C, IrDA, LIN, SPI, and UART/USART.
- How does the MSP430F67791AIPZR handle low power conditions during AC mains failure?
The display operates at very low power during AC mains failure, consuming only 3 µA in LPM3.
- What security features are integrated into the MSP430F67791AIPZR?
The MSP430F67791AIPZR includes integrated security modules to support anti-tamper, a password-protected real-time clock with tamper detection, and crystal offset calibration.
- What is the operating temperature range of the MSP430F67791AIPZR?
The operating temperature range of the MSP430F67791AIPZR is -40°C to 85°C (TA).
- What is the role of the Energy Measurement Design Center (EMDC) in relation to the MSP430F67791AIPZR?
The Texas Instruments Energy Measurement Design Center (EMDC) simplifies development and accelerates designs by configuring the Energy Measurement software library, automatically generating code, performing calibration, and viewing results.
- What development tools and kits are available for the MSP430F67791AIPZR?
Development kits include the EVM430-F6779 three-phase electricity meter evaluation module and the MSP-TS430PEU128 128-pin target development board.
