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Enabling Smart Metering Systems with the World's Lowest Power Microcontroller

MSP430 for Utility Metering Applications

Designed specifically for the demands of utility metering applications, TI's MSP430 ultra low power microcontroller is the perfect combination of ultra-low-power and high performance analog integration. MSP430 offers devices for water, gas and one to three-phase electricity metering, as well as radio frequency wireless interfaces for automated meter reading (AMR).

E-mail us for more information on Smart Metering products from Texas Instruments: metering@ti.com

Electricity Metering - Microcontroller Selection Tool

Introducing the MSP430AFE2xx series - Industry's first programmable metrology devices for low-cost analog front-end solutions

Focusing on metering and smart grid applications, TI announces the MSP430AFE2xx series of metrology analog-front end (AFE) ultra-low-power 16-bit microcontrollers. Part of TI's leading embedded processing portfolio, the low-cost MSP430AFE series offers the industry's first programmable single-phase metrology devices supported with multiple communication interfaces. The microcontrollers enable system partitioning in metering applications, such as electricity meters, home automation, sub-metering and energy saving systems, which allows flexible, stand-alone, high-quality measurement. The MSP430AFE series is based on a 16-bit RISC architecture with a system frequency of 12MHz, offering 3X the system speed over competing parts to drive increased functionality. The microcontroller achieves less than 0.1 percent error in energy accuracy over a wide dynamic range of 2400:1, enabled by three independent 24-bit Sigma-delta converters supporting anti-tamper. For more information, please visit the MSP430AFE2xx product folder.

Introducing the MSP430AFE2xx series

MSP430F471xx ultra-low-power MCUs offer high accuracy, simultaneous sampling and anti-tamper for three-phase e-metering applications - Supporting three-phase e-metering applications, the ultra-low-power MSP430F471xx microcontroller series achieves leading accuracy results, and offers simultaneous sampling of voltage and current as well as tamper-detection for efficient and reliable energy measurement.

Before-after utility system

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Low-cost MSP430FE42x2 MCUs Reduce Component Count for Electricity Metering - By integrating an ESP energy calculation engine with 2x16-bit sigma-delta ADCs, 128 segment LCD driver, up to 32 KB of flash memory and 1KB of RAM, the MSP430FE42x2 series of ultra-low power MCUs enable a four to one reduction in system components. This high integration makes it an ideal solution for single-phase metering applications.

MSP430 for Utility Metering Applications
Electricity Metering | Flow Metering | AMR | Other Resources

Electricity Metering

An advanced electronic electricity meter requires an MCU that offers precise voltage and current conversion over a wide dynamic range, programmable Flash, non-volatile storage, real-time clock function, flexible display and AMR-enabled communications features. The MSP430 family of electricity metering devices was designed for these demands. The family offers up to seven 16-bit independent sigma-delta converters and programmable gain amplifiers along with specific integrated e-metering modules such as the ESP engine and 32x32 hardware multiplier allowing for easy, high performance energy metering calculations.

MSP430 Devices Optimized for Electricity Metering
Part Number	Memory Size	Key Integrated Peripherals
MSP430FE42x2	Up to 32KB flash and 1KB RAM	8MHz CPU, (2) 16-bit Sigma-Delta ADCs and PGAs, 128 seg. LCD, Separate Embedded Signal Processor (ESP) for e-meter calculations
MSP430FE42xA	Up to 32KB Flash and 1KB RAM	8MHz CPU, (3) 16-bit Sigma-Delta ADCs and PGAs, 128 seg. LCD, Separate Embedded Signal Processor (ESP) for e-meter calculations
MSP430F47x3/MSP430F47x4	Up to 60KB Flash and 2.5KB RAM	16MHz CPU, 3 or 4 16-bit Sigma-Delta ADCs and PGAs, 160 seg. LCD, 32x32 Hardware Multiplier for easy energy measurement calculations
MSP430F471xx	Up to 120KB Flash and 8 KB RAM	16MHz CPU, 3, 6 or 7 16-bit Sigma-Delta ADCs and PGAs, 160 seg. LCD, RTC, 32x32 Hardware Multiplier for easy energy measurement calculations
MSP430AFE2xx	Up to 16kB Flash and 512B RAM	12MHz CPU, 2 or 3 24-bit Sigma-Delta ADCs and PGs, 16x16 Hardware Multiplier for easy energy measurement calculations

View all of the MSP430 Devices.

MSP430 Collateral for Electricity Metering
Literature/Part Number	Description	Type
SLAA203	Implementing an electronic watt-hour meter with MSP430FE42x(A)/FE42x2	Application Note
SLAA391	Implementation of a three-phase electronic electricity meter using MSP430 4xx family of microcontrollers	Application Note
SLAA409	Implementation of a three-phase electronic electricity meter using the MSP430F471xx system-on-chip (SOC) processor	Application Note
SLAA122	Current Transformer Phase Shift Compensation and Calibration	Application Note
SLAA075	A Low-Cost Single-Phase Electricity Meter Using MSP430C11x	Application Note
SLAS222	TSS721A Meter Bus Transceiver	Datasheet

View all of the MSP430 Application Notes.

Automated Meter Reading

Essentially like a two-way remote control, an electronic meter with AMR solution reads billing information and performs meter diagnostics automatically and communicates that information either wirelessly or over existing power lines back to the utility. MSP430's versatile portfolio of integrated communication modules allows for easy AMR-enabled solutions.