DESCRIPTION

The Teridian 78M6618 is a highly integrated IC for independent monitoring and measurement of up to eight single-phase AC outlets. With multiple host interface options, an integrated LCD driver, and configurable I/Os, the device is ideal for metered power distribution units (PDUs) and rack enclosures for the data center, as well as intelligent power strips and subpanels in the grid-friendly digital home.

FEATURES

• < 0.5 Wh Accuracy Over Wide 2000:1 Current Range and Over Temperature

• Exceeds IEC 62053/ANSI C12.20 Standards

• Voltage Reference < 40ppm/°C

• 10 Sensor Inputs—V3P3 Referenced

• 21-Bit Delta-Sigma ADC with Independent 32-Bit Compute Engine (CE)

• 8-Bit MPU (80515), One Clock Cycle per Instruction with 4KB MPU XRAM

• 128KB Flash with Security

• Integrated ICE for MPU Debug

• 32kHz Time Base with Hardware Watchdog Timer

• UART and High-Speed Slave SPI Host Interface Options

• Up to 19 General-Purpose 5V Tolerant I/O Pins

• LCD Driver (Up to 70 Pixels)

• Packaged in a Lead(Pb)-Free/RoHS-Compliant (6/6) 68-Pin QFN

• Robust Sub-Metering Application Firmware:

o True RMS Calculations for Current, Voltage, Line Frequency, Real Power, Reactive Power, Apparent Power, and Power Factor

o Accumulated Watt-Hours, Kilowatt-Hours, and Cost

o Intelligent Switch Control at Zero Crossings

o Digital Temperature Compensation

o Phase Compensation (±15°)

o Quick Calibration Routines

o 46-64Hz Line Frequency Range with Same Calibration

o Programmable Alarm Thresholds

o High-Level UART Communication Protocols

o High-Level SPI Communication Protocols