Low-cost polyphase metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 128KB Flash, 8KB RAM | PN | 80 | -40 to 85

The TI MSP430F676x1 polyphase metering SoCs are powerful highly integrated solutions

for revenue meters that offer accuracy and low system cost with few external components. The F676x1

uses the low-power MSP430™ CPU with a 32-bit multiplier to perform

all energy calculations, metering applications such as tariff rate management, and communications

with AMR or AMI modules. The F676x1 features TI’s 24-bit sigma-delta converter technology, which

provides better than 0.5% accuracy. Family members include up to 128KB of flash and 8KB of RAM and

an LCD controller with support for up to 320 segments.

The ultra-low-power nature of the F676x1 means that the system power supply can be

minimized to reduce overall cost. Lowest standby power means that backup energy storage can be

minimized, and critical data retained longer in case of a mains power failure. The F676x1 family

executes the TI energy measurement software library, which calculates all relevant energy and power

results. The energy measurement software library is available with the F676x1 at no cost. Industry

standard development tools and hardware platforms are available to speed development of meters that

meet all of the ANSI and IEC standards globally.

For complete module descriptions, see the MSP430F5xx and MSP430F6xx Family User’s Guide.