The BL0930E is a low cost, high accuracy, high stability, simple peripheral circuit electrical energy meter IC. The meter based on the BL0930E is intended for using in single-phase, two-wire distribution systems.
Features

High accuracy, less than 0.1% error over a dynamic range of 3000 : 1
Exactly measure the real power in the positive orientation and negative orientation, calculate the energy in the same orientation
A PGA in the current channel allows using small value shunt and burden resistance
The low frequency outputs F1 and F2 can directly drive electromechanical counters and two phase stepper motors and the high frequency output CF, supplies instantaneous real power, is intended for calibration and communications
The logic outputs REVP can be used to indicate a potential orientation
Low static power (typical value of 15mW). The technology of SLiM (SmartLowcurrent Management ) is used.
On-Chip power supply detector
On-Chip anti-creep protection
On-Chip oscillator
On-Chip voltage reference of 2.42V +- 8% (typical temperature coefficient of 30ppm ), with external overdrive capability
Single 5V supply

Resources
Datasheet