MSP430F67791IPEUR

The MSP430F677x1 series of multi-phase metering SoCs are powerful and highly integrated solutions for revenue meters. They can provide accurate metering and achieve low system costs with few external components. The F677x1 series devices use a low-power MSP430 CPU with a 32-bit multiplier to perform all energy calculations and metering applications, such as rate management and communication with AMR and AMI modules. The F677x1 devices adopt TI's 24-bit Σ - Δ converter technology, with an accuracy better than 0.1%. The series products include up to 512KB of flash memory, 32KB of RAM supporting single-cycle access, and an LCD controller supporting up to 320 segments. The ultra-low power consumption property of the F677x1 devices means that the system power supply can be minimized to reduce the overall cost. The lowest standby power means that the backup power storage can be minimized, and critical data can be retained for a longer time in case of a main power failure. The F677x1 series devices execute TI's electrical energy measurement software library, which calculates all relevant electrical energy and power results. The electrical energy measurement software library is provided free of charge with the F677x1 devices. Industrial standard development tools and software platforms are also provided to accelerate the development of meters compliant with all ANSI and IEC standards globally.

Applications

• Three-phase electronic energy meter
• Utility meter 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 sensor types including current transformers, Rogowski coils, and shunts
• Power management for up to 3-phase plus neutral
• Dedicated pulse output pins for active and reactive energy 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 with single calibration
• Flexible power supply options with automatic switching 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 crystal offset calibration and temperature compensation
• Integrated security module for tamper resistance
• Multiple communication interfaces for smart meter implementation
• High-performance 25MHz CPU with 32-bit multiplier
• Wide supply voltage range: 3.6V down to 1.8V
• Ultra-low power during energy management – 2.9mW at 10MHz operation (3V)
• 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
• Up to 512KB single-cycle Flash
• Up to 32KB RAM with single-cycle access
• Up to 7 independent 24-bit Σ-Δ ADC systems with differential inputs and variable gain
• 10-bit 200ksps ADC – 6 enhanced channels for power supply and temperature sensor measurement
• 6 enhanced communication ports: configurable among 4 UARTs, 6 SPIs, and 2 I²C interfaces
• Four 16-bit timers with 9 capture/compare registers
• 128-pin LQFP (PEU) package with 90 I/O pins
• 100-pin LQFP (PZ) package with 62 I/O pins
• Industrial temperature range: -40℃ to 85℃
• Three-phase electronic energy meter development tools (see also Tools & Software)
• EVM430-F6779 and application notes
• Energy measurement design center for MSP430™ MCUs