应用功能:芯片组解决方案 A two chip solution, consisting of AT73C500 and AT73C501 (or AT73C502), offers allmain features required for the measurement and calculation of various power and energy quantities in static Watt-hour meters. The devices operate according to IEC1036, class 1, specification. IEC 687, class 0.5 and 0.2 requirements are fulfilled when used with external temperature compensated voltage reference.