Overview
The MSP430F67791AIPZ is a highly integrated polyphase metering System-on-Chip (SoC) from Texas Instruments, designed for energy measurement and power monitoring applications. This microcontroller (MCU) is part of the MSP430™ Metrology and Monitoring MCU portfolio, targeting smart grid and building automation. It features a high-performance MSP430 CPU with a 32-bit multiplier, enabling precise metrology calculations. The device is known for its ultra-low power consumption, which minimizes system power supply and reduces overall cost. It is supported by an extensive software and hardware ecosystem, including the Texas Instruments Energy Measurement Design Center (EMDC) and various development kits.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Series | MSP430F67791A |
| Package Type | LQFP-100 |
| Core | CPUXV2 |
| Data Bus Width | 16 bit |
| Maximum Clock Frequency | 25 MHz |
| Program Memory Size | 512 kB Flash |
| Data RAM Size | 32 kB SRAM |
| ADC Resolution | 10 bit, 24 bit |
| Number of I/Os | 62 I/O |
| Operating Supply Voltage | 1.8 V to 3.6 V |
| Operating Temperature Range | -40°C to +85°C |
| Interface Type | I2C, SPI, UART |
| Number of Timers/Counters | 4 x 16 bit |
| Active Power | 346.8 uA/MHz |
| Standby Power | 2.9 uA in LPM3 |
Key Features
- High Accuracy: Better than 0.1% accuracy over a 2000:1 dynamic range for phase current, meeting or exceeding ANSI C12.20 and IEC 62053 standards.
- Power Measurement: Supports power measurement for up to three phases plus neutral, with 4-quadrant measurement per phase or cumulative.
- Analog Capabilities: Up to seven independent 24-bit sigma-delta ADCs and a 10-bit 200-ksps SAR ADC with external and internal channels.
- Low Power Consumption: Ultra-low power consumption to minimize system power supply and reduce overall cost, with low standby power to retain critical data longer in case of mains power failure.
- Integrated Peripherals: Includes LCD driver with contrast control for up to 320 segments, real-time clock with tamper detection, and integrated security modules.
- Communication Interfaces: Multiple communication interfaces such as I2C, SPI, and UART for smart meter implementations).
- Development Support: Supported by the Texas Instruments Energy Measurement Design Center (EMDC) and various development kits like the EVM430-F6779 and MSP-TS430PEU128).
Applications
The MSP430F67791AIPZ is primarily used in energy measurement and power monitoring applications, including:
- Smart Grids: For advanced metering infrastructure and grid management systems.
- Building Automation: For monitoring and controlling energy usage in commercial and residential buildings.
- Three-Phase Electricity Meters: For precise measurement of active and reactive energy in industrial and commercial settings.
- Industrial Automation: For monitoring and controlling energy usage in industrial environments.
Q & A
- What is the primary application of the MSP430F67791AIPZ?
The primary application is in energy measurement and power monitoring, particularly in smart grids, building automation, and three-phase electricity meters.
- What is the maximum clock frequency of the MSP430F67791AIPZ?
The maximum clock frequency is 25 MHz.
- How much program memory and data RAM does the MSP430F67791AIPZ have?
The device has 512 kB of flash program memory and 32 kB of SRAM data RAM.
- What are the operating voltage and temperature ranges of the MSP430F67791AIPZ?
The operating supply voltage is 1.8 V to 3.6 V, and the operating temperature range is -40°C to +85°C.
- What types of ADCs are integrated into the MSP430F67791AIPZ?
The device includes up to seven independent 24-bit sigma-delta ADCs and a 10-bit 200-ksps SAR ADC.
- Does the MSP430F67791AIPZ support multiple communication interfaces?
Yes, it supports I2C, SPI, and UART interfaces.
- What is the standby power consumption of the MSP430F67791AIPZ?
The standby power consumption is 2.9 uA in LPM3 mode.
- Is the MSP430F67791AIPZ supported by any development tools or kits?
Yes, it is supported by the Texas Instruments Energy Measurement Design Center (EMDC) and development kits like the EVM430-F6779 and MSP-TS430PEU128.
- What standards does the MSP430F67791AIPZ meet or exceed?
The device meets or exceeds ANSI C12.20 and IEC 62053 standards.
- Does the MSP430F67791AIPZ have integrated security features?
Yes, it includes integrated security modules to support anti-tamper functions.
