Overview
The MSP430F6749AIPZR is a highly integrated microcontroller (MCU) from Texas Instruments, part of the MSP430F67xxA family. This device is specifically designed for energy measurement and power monitoring applications, including smart grid and building automation. It features a high-performance MSP430 CPU with a 32-bit multiplier, making it suitable for complex metrology calculations. The MCU is supported by an extensive software and hardware ecosystem, including the Texas Instruments Energy Measurement Design Center, which simplifies development and accelerates design processes.
Key Specifications
| Specification | Value |
|---|---|
| Flash Memory | Up to 512 KB |
| RAM | 32 KB |
| ADC Type | 24-bit Sigma-Delta |
| Number of ADC Channels | Up to 7 independent channels |
| Number of GPIOs | 90 |
| CPU Frequency | Up to 25 MHz |
| Supply Voltage Range | 3.6 V down to 1.8 V |
| Low-Power Modes | Standby (LPM3): 2.1 µA at 3 V, RTC Mode (LPM3.5): 0.34 µA at 3 V, Shutdown Mode (LPM4.5): 0.18 µA at 3 V |
| Package Options | 100-Pin LQFP (PZ) Package |
| Communication Interfaces | Six Enhanced Universal Serial Communication Interfaces (eUSCIs): UART, IrDA, SPI, I2C |
Key Features
- High accuracy energy measurement with better than 0.1% accuracy over a 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 and digital phase correction for current transformers.
- Temperature-compensated energy measurements.
- Flexible power supply options with automatic switching.
- 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 and encryption.
- Ultra-low power consumption with multiple low-power modes.
Applications
- 3-phase electronic watt-hour meters.
- Utility metering.
- Energy monitoring.
- Smart grid and building automation.
Q & A
- What is the primary application of the MSP430F6749AIPZR MCU?
The primary application is for energy measurement and power monitoring, including smart grid and building automation.
- What is the accuracy of the energy measurement provided by this MCU?
The MCU provides better than 0.1% accuracy over a 2000:1 dynamic range for phase current.
- What standards does the MSP430F6749AIPZR comply with?
It meets or exceeds ANSI C12.20 and IEC 62053 standards.
- What types of sensors does the MSP430F6749AIPZR support?
It supports multiple sensors such as current transformers, Rogowski coils, or shunts.
- What are the low-power modes available in the MSP430F6749AIPZR?
The MCU features Standby (LPM3), RTC Mode (LPM3.5), and Shutdown Mode (LPM4.5) with very low power consumption.
- What is the maximum frequency of the CPU in the MSP430F6749AIPZR?
The CPU frequency can go up to 25 MHz.
- What is the range of the supply voltage for the MSP430F6749AIPZR?
The supply voltage range is from 3.6 V down to 1.8 V.
- What communication interfaces are available on the MSP430F6749AIPZR?
The MCU features six Enhanced Universal Serial Communication Interfaces (eUSCIs) supporting UART, IrDA, SPI, and I2C.
- Does the MSP430F6749AIPZR have integrated security features?
Yes, it includes integrated security modules to support anti-tamper and encryption.
- What development tools are available for the MSP430F6749AIPZR?
Development tools include the Energy Measurement Design Center, evaluation modules like EVM430-F6779, and target development boards like MSP-TS430PEU128.
