DESCRIPTION
The SAMES monochip single phase bidirectional kilowatt hour metering module, the PM9109BF, provides all the required metering functions including energy measurement, a 7 digit LCD driver, a tariff selection facility, an optical port as well as a pulse output for calibration purposes.

FEATURES
■ Performs bidirectional energy metering and includes a 7 digit LCD driver with announciators
■ 4 externally selectable on-chip tariff registers
■ An additional total energy register
■ Meets the accuracy requirements for Class 1 AC Watt hour meters
■ Optical interface for electronic reading according to IEC1107 Mode D
■ Pulse output for calibration
■ Total power consumption rating below 600mW
■ Uses a shunt resistor for current sensing
■ Operates over a wide temperature range
■ Demonstration software included