Integrated Device Technology, Inc. reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best pos-
sible product. IDT does not assume any responsibility for use of any circuitry described other than the circuitry embodied in an IDT product. The Company makes no representations that circuitry
described herein is free from patent infringement or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent, patent rights or other
rights, of Integrated Device Technology, Inc.
LIFE SUPPORT POLICY
Integrated Device Technology's products are not authorized for use as critical components in life support devices or systems unless a specific written agreement pertaining to such intended use is exe-
cuted between the manufacturer and an officer of IDT.
1. Life support devices or systems are devices or systems which (a) are intended for surgical implant into the body or (b) support or sustain life and whose failure to perform, when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
2. A critical component is any components of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its
safety or effectiveness.
Table of Contents
FEATURES .............................................................................................................................................................................. 6
DYNAMIC METERING RANGE .................................................................................................................................................................... 12
STARTUP AND NO-LOAD POWER ............................................................................................................................................................. 12
ENERGY REGISTERS .................................................................................................................................................................................. 12
N LINE METERING AND ANTI-TAMPERING .............................................................................................................................................. 13
3.4.1 Metering Mode and L/N Line Current Sampling Gain Configuration ......................................................................................... 13
MEASUREMENT AND ZERO-CROSSING ................................................................................................................................................... 14
4.1.3 Timeout and Protection ................................................................................................................................................................. 18
WARNOUT PIN FOR FATAL ERROR WARNING ....................................................................................................................................... 18
LOW COST IMPLEMENTATION IN ISOLATION WITH MCU ...................................................................................................................... 18
REGISTER LIST ............................................................................................................................................................................................ 19
STATUS AND SPECIAL REGISTER ............................................................................................................................................................ 21
METERING/ MEASUREMENT CALIBRATION AND CONFIGURATION .................................................................................................... 25
5.3.1 Metering Calibration and Configuration Register ....................................................................................................................... 25
ENERGY REGISTER .................................................................................................................................................................................... 37
POWER ON RESET TIMING ........................................................................................................................................................................ 51
VOLTAGE SAG TIMING ............................................................................................................................................................................... 52
ABSOLUTE MAXIMUM RATING .................................................................................................................................................................. 53
Function List ................................................................................................................................................................................................... 6
Active Energy Metering Error ....................................................................................................................................................................... 12
Reactive Energy Metering Error ................................................................................................................................................................... 12
Threshold Configuration for Startup and No-Load Power ............................................................................................................................ 12
Energy Registers ......................................................................................................................................................................................... 12
The Measurement Format ........................................................................................................................................................................... 14
Read / Write Result in Four-Wire Mode ....................................................................................................................................................... 18
Read / Write Result in Three-Wire Mode ..................................................................................................................................................... 18
Register List ................................................................................................................................................................................................. 19
Power On Reset Specification ..................................................................................................................................................................... 51
Voltage Sag Specification ............................................................................................................................................................................ 52
Power On Reset Timing Diagram ................................................................................................................................................................ 51
Voltage Sag Timing Diagram ...................................................................................................................................................................... 52
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