TI MSP430F67471AIPZR

MSP430F67xx1A multi-phase metering SoC is a powerful and highly integrated solution that provides high-precision metering and low system cost with few external components. The MSP430F67xx1A microcontroller (MCU) series is part of the MSP430 metering and monitoring MCU product family, which is dedicated to power measurement and power monitoring applications (including smart grid and building automation).

MSP430F67xx1A MCUs have up to seven independent 24-bit Σ-Δ ADCs, providing better than 0.1% accuracy. The MSP430F67xx1A devices integrate a high-performance MSP430 CPU and a 32-bit multiplier to perform all metering calculations. Series product members include up to 512KB of flash memory, 32KB of RAM, and an LCD controller supporting up to 320 segments.

MSP430F67xx1A has ultra-low power consumption, which can minimize the system power supply and thus reduce the total cost. Low standby power requires the lowest power storage and can retain critical data for a longer time when the main power supply fails.

The MSP430F67xx1A MCU series is supported by a wide range of software and hardware ecosystems. The Texas Instruments (TI) Energy Measurement Design Center (EMDC) can simplify development and speed up design by quickly configuring the energy measurement software library, automatically generating code, performing calibration, and viewing results. The MSP430F67xx1A MCU executes the energy measurement software library, which 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. Industrial standard development tools and software platforms are also provided to accelerate the development of meters compliant with all ANSI and IEC standards globally.

• Phase current accuracy <0.1% over a dynamic range of more than 2000:1
• Meets or exceeds American National Standards Institute (ANSI) C12.20 and International Electrotechnical Commission (IEC) 62053 standards
• Supports multiple sensors such as current transformers, Rogowski coils, or shunts
• Dedicated pulse output pins for active and reactive energy for calibration for power management up to 3 phases plus neutral phase
• Four-quadrant measurement per phase or cumulative phase
• Accurate phase angle measurement
• Digital phase correction for current transformers
• Temperature-compensated power measurement
• 40Hz to 70Hz line frequency range using a single calibration
• Supports flexible power options with automatic switching
• During AC main power failure, the display operates at very low power consumption: 3μA in LMP3
• LCD driver with up to 320 segments of contrast control
• Password-protected real-time clock (RTC) with tamper detection, crystal offset calibration, and temperature compensation
• Integrated security module to support anti-tampering
• Multiple communication interfaces for smart meter implementation
• High-performance analog: Up to 7 independent 24-bit Σ-Δ ADCs supporting differential input and variable gain; 10-bit 200ksps SAR ADC with 6 external channels and 2 internal channels, including power and temperature sensor measurements
• Highly integrated digital: 3-channel direct memory access (DMA) controller; 16-bit cyclic redundancy check (CRC) module; 4 16-bit timers with a total of 9 capture/compare registers; 6 enhanced universal serial communication interfaces (eUSCI) - 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): 2.1μA at 3V, wakes up in less than 5μs; RTC mode (LPM3.5): 0.34μA at 3V; Shutdown mode (LPM4.5): 0.18μA at 3V CPU
• High-performance 25MHz CPU with 32-bit multiplexer
• Wide input power supply voltage range: 3.6V down to 1.8V
• Memory: Up to 512KB of single-cycle flash; Up to 32KB of RAM supporting single-cycle access
• Package options: 128-pin thin quad flat (LQFP) (PEU) package with 90 I/O pins; 100-pin LQFP (PZ) package with 62 I/O pins

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