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DATA SHEET
MSP430F677x1A, MSP430F676x1A, MSP430F674x1A Polyphase Metering SoCs
1 Device Overview
1.1 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
- Highly Integrated Digital
- Three-Channel Direct Memory Access (DMA) Controller
- 16-Bit Cyclic Redundancy Check (CRC) Module
- Four 16-Bit Timers With Nine Total Capture/Compare Registers
- Six Enhanced Universal Serial Communication Interfaces (eUSCIs)
- eUSCI_A0, eUSCI_A1, eUSCI_A2, and eUSCI_A3 Support UART, IrDA, and SPI
- eUSCI_B0, eUSCI_B1 Support SPI and I2C
- Ultra-Low Power Consumption
- 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
- CPU
- High-Performance 25-MHz CPU With 32-Bit Multiplier
- Wide Input Supply Voltage Range:
3.6 V Down to 1.8 V
- Memory
- Up to 512KB of Single-Cycle Flash
- Up to 32KB of RAM With Single-Cycle Access
- Package Options
- 128-Pin LQFP (PEU) Package With 90 I/O Pins
- 100-Pin LQFP (PZ) Package With 62 I/O Pins
- Development Tools (Also See Tools and Software)
1.2 Applications
- 3-Phase Electronic Watt-Hour Meters
- Utility Metering
- Energy Monitoring
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