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MCUs Tout Flexibility for Next-gen Single-phase Metering and Energy Monitoring Apps

Wed, 01/25/2012 - 6:54am
MCUs for next gen meteringTexas Instruments Incorporated announced the MSP430F673x/F672x family of ultra-low-power 16-bit microcontrollers. According to the company, these new devices guarantee no interruption of operation through a backup capable microcontroller supporting real-time clock (RTC) operation and power management from the main power supply and up to two separate auxiliary supplies. The 24 new F673x/F672x devices also achieve more precise measurements through an increased sampling rate and desirable linearity over multiple operating conditions, such as current range and time, resulting in a stable system solution. These devices are TI’s first 6xx series microcontrollers with integrated 24-bit sigma-deltas and a 320-segment LCD controller. Compared to the previous 160-segment solution, the company asserts developers can leverage enhanced segmented LCDs with more programmability and enable more characters on displays, especially with Asian languages. As part of the MSP430 microcontroller portfolio, the devices are designed for ultra-low-power modes, ensuring the LCD display is consuming as little power as possible during operation.

Key features and benefits of the MSP430F673x/F672x family
• Powerful 24-bit sigma-delta with programmable gain amplifier and less than 0.1 percent accuracy across a 2400:1 dynamic range enables the F673x/F672x family to meet class 0.1 meters and exceed IEC62053/ANSI C12.20
• Sigma-delta converter offers independent channels for voltage, current and tamper detection, reducing energy measurement software development and security concerns
• 320-seg LCD driver, which enables segment and blinking control and dual display memory, can also run in 8-MUX mode to support multiple LCD devices
• Real-time clock and calendar mode operates from separate voltage supply with programmable charger for accurate data logging and measurements with no loss of data
• Ultra-low power consumption at 1.4 µA in standby mode with ultra-fast wake up at less than 3 µs
• MSP430 electricity metering selection tool provides an easy way for developers to find the right product for their applications.
• Free MSP430 Energy Library supports metrology software measurements, such as voltage, energy and tamper detection

Texas Instruments
800-477-8924, www.ti.com
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