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MSP430 for Utility Metering Applications

 




Sub-Metering Made Easy Using Texas Instruments Energy Measurement ICs

Sub-metering applications such as smart plugs and appliance energy meters enable consumers to understand and control their energy usage patterns. Other sub-metering applications such as server power meters help IT departments optimize power consumption of server farms. This white paper discusses features and benefits of energy measurement ICs such as the MSP430AFE2xx in these applications.
Also, this app note details the implementation of a single-phase electronic watt-hour meter using the AFE2xx.



Designed specifically for the demands of smart grid applications, TI's MSP430 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). The development ecosystem is optimized to support quick ramp to production thru access to various application notes, software suites and evaluation modules.





Electricity Metering - Microcontroller Selection Tool



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 Block Diagram
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 FE42x2 Block Diagram
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 471xx Block Diagram
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 AFE Block Diagram
 
MSP430F673x/F672x Up to 128kB Flash and 8kB RAM 25MHz CPU, 2 or 3 24-bit Sigma-Delta ADCs and PGs, 320-segment LCD, RTC with battery backup from auxiliary power supply 67xx Block Diagram
 
View all of the MSP430 Devices.

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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
SLAA494 Implementation of a Single-Phase Electronic Watt-Hour Meter Using the MSP430AFE2xx Application Note
SLAA467 Quick Start Guide to the Smart Meter Reference Design Application Note
SLAA138 An Electronic Water Meter Design Using MSP430F41x Application Note
SLAA517 Implementation of a Single-Phase Electronic Watt-Hour Meter Using the MSP430F6736 Application Note
 
View all of the MSP430 Application Notes.

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