MSP430F67791IPZ

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1. Description

The TI MSP430F67791IPZ family of polyphase metering SoCs are powerful highly integrated solutions for revenue meters that offer accuracy and low system cost with few external components. The F677x1 family of devices uses the low-power MSP430 CPU with a 32-bit multiplier to perform all energy calculations, metering applications such as tariff rate management, and communications with AMR and AMI modules. The F677x1 devices feature TI's 24-bit sigma-delta converter technology, which provides better than 0.1% accuracy. Family members include up to 512KB of flash, 32KB of RAM, and an LCD controller with support for up to 320 segments. The ultra-low-power nature of the F677x1 devices means that the system power supply can be minimized to reduce overall cost. Lowest standby power means that backup energy storage can be minimized and critical data retained longer in case of a mains power failure. The F677x1 family of devices executes the TI energy measurement software library, which calculates all relevant energy and power results. The energy measurement software library is available with the F677x1 devices at no cost. Industry standard development tools and hardware platforms are available to speed development of meters that meet all of the ANSI and IEC standards globally.

2. Features

    1. Accuracy < 0.1% Over 2000:1 Dynamic Range for Phase Current

    2. Meets or Exceeds ANSI C12.20 and IEC 62053 Standards

    3. Support for Multiple Sensors Such as Current Transformers, Rogowski Coils, or Shunts

    4. Power Measurement for up to Three Phases Plus Neutral

    5. Dedicated Pulse Output Pins for Active and Reactive Energy for Calibration

    6. Four-Quadrant Measurement per Phase or Cumulative

    7. Exact Phase Angle Measurements

    8. Digital Phase Correction for Current Transformers

    9. Temperature Compensated Energy Measurements

  10. 40-Hz to 70-Hz Line Frequency Range Using Single Calibration

  11. Flexible Power Supply Options With Automatic Switching

  12. Display Operates at Very Low Power During AC Mains Failure: 3 µA in LPM3

  13. LCD Driver With Contrast Control for up to 320 Segments

  14. Password-Protected Real-Time Clock (RTC) With Crystal Offset Calibration and Temperature Compensation

  15. Integrated Security Modules to Support AntiTamper

  16. Multiple Communication Interfaces for Smart Meter Implementations

  17. High-Performance 25-MHz CPU With 32-Bit Multiplie

  18. Wide Input Supply Voltage Range: 3.6 V Down to 1.8 V

  19. Ultra-Low Power Consumption During Energy Measurement

        – 2.9 mW at 10-MHz Operation (3 V)

  20. Multiple Low-Power Modes

        – Standby Mode (LPM3): 2.1 µA at 3 V, Wake up in Less Than 5 µs

        – RTC Mode (LPM3.5): 0.34 µA at 3 V

        – Shutdown Mode (LPM4.5): 0.18 µA at 3 V

  21. Up to 512KB of Single-Cycle Flash

  22. Up to 32KB of RAM With Single-Cycle Access

  23. Up to Seven Independent 24-Bit Sigma-Delta ADCs With Differential Inputs and Variable Gain

  24. System 10-Bit 200-ksps ADC

        – Six Channels Plus Supply and Temperature Sensor Measurement

  25. Six Enhanced Communications Ports

        – Configurable Among Four UART, Six SPI, and Two I²C Interfaces

  26. Four 16-Bit Timers With Nine Total Capture/Compare Registers

  27. 128-Pin LQFP (PEU) Package With 90 I/O Pins

  28. 100-Pin LQFP (PZ) Package With 62 I/O Pins

  29. Industrial Temperature Range of –40°C to 85°C

  30. 3-Phase Electronic Watt-Hour Meter Development Tool (Also See Tools and Software)

        – EVM430-F6779 With Application Note

        – Energy Measureme

3. Applications

    1. 3-Phase Electronic Watt-Hour Meters

    2. Utility Metering

    3. Energy Monitoring

4. Pin configuration