MSP430F6747AIPZ

The MSP430F67xxA multi-phase metering SoC is a powerful, highly integrated solution that delivers high-accuracy metering with minimal external components and low system cost. This MCU family is dedicated to energy measurement and power monitoring applications, including smart grid and building automation. The MSP430F67xxA MCU features up to seven independent 24-bit Σ-Δ ADCs, providing better than 0.1% accuracy. The MSP430F67xxA integrates a high-performance MSP430 CPU and a 32-bit multiplier to execute all metering calculations. Family members include up to 512KB of flash memory, 32KB of RAM, and an LCD controller supporting up to 320 segments. The MSP430F67xxA offers ultra-low power consumption to minimize system power supply requirements, reducing total cost. Low standby power demands minimal energy storage and enables longer retention of critical data during main power failures. The MSP430F67xxA MCU family is supported by an extensive software and hardware ecosystem. The Energy Measurement Design Center (EMDC) simplifies development and accelerates design by quickly configuring the energy measurement software library, auto-generating code, performing calibration, and viewing results. The MSP430F67xxA MCU runs an energy measurement software library that calculates all relevant energy and power results. Development kits include the EVM430-F6779 three-phase meter evaluation board and the MSP-TS430PEU128 128-pin target development board. Industry-standard development tools and software platforms are also available to accelerate the development of meters compliant with all ANSI and IEC standards.

Applications

• Three-phase electronic energy meter
• Utility metering
• Energy monitoring

Key features

• Phase current accuracy < 0.1% over a dynamic range exceeding 2000:1
• Meets or exceeds ANSI C12.20 and IEC 62053 standards
• Supports multiple sensors such as current transformers, Rogowski coils, or shunts
• Power management for up to 3 phases plus neutral phase
• Dedicated pulse output pins for active and reactive energy for calibration
• Four-quadrant measurement per phase or accumulated phases
• Precise phase angle measurement
• Digital phase correction for current transformers
• Temperature-compensated energy measurement
• 40Hz to 70Hz line frequency range using a single calibration
• Flexible power supply options with automatic switchover support
• During AC mains failure, display operates at ultra-low power: 3μA in LPM3
• LCD driver with up to 320-segment contrast control
• Password-protected RTC with tamper detection, crystal offset calibration, and temperature compensation
• Integrated security module supporting anti-tamper and encryption
• Multiple communication interfaces for smart meter implementation
• High-performance analog
• Up to 7 independent 24-bit Σ-Δ ADCs with differential input and variable gain support
• 10-bit 200ksps SAR ADC with 6 external channels and 2 internal channels, including power supply and temperature sensor measurements
• 3-channel DMA controller
• Integrated hardware AES-128 module for encryption
• 16-bit CRC module
• Four 16-bit timers with a total of 9 capture/compare registers
• Six enhanced universal serial communication interfaces (eUSCI)
• eUSCI_A0, eUSCI_A1, eUSCI_A2, and eUSCI_A3 support UART, IrDA, and SPI
• eUSCI_B0 and eUSCI_B1 support SPI and I²C
• Ultra-low power consumption
• Multiple low-power modes
• Standby mode (LPM3): 2.1μA at 3V, wake-up in less than 5μs
• RTC mode (LPM3.5): 0.34μA at 3V
• Shutdown mode (LPM4.5): 0.18μA at 3V
• High-performance 25MHz CPU with 32-bit multiplier
• Wide input supply voltage range: 3.6V down to 1.8V
• Up to 512KB single-cycle flash memory
• Up to 32KB RAM with single-cycle access
• 128-pin LQFP (PEU) package with 90 I/O pins
• 100-pin LQFP (PZ) package with 62 I/O pins