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ADE7518
TABLE OF CONTENTS
General Features ............................................................................... 1 ?
Energy Measurement Features........................................................ 1 ?
Microprocessor Features.................................................................. 1 ?
Revision History ............................................................................... 3 ?
General Description ......................................................................... 4 ?
Functional Block Diagram .............................................................. 4 ?
Specifications..................................................................................... 5 ?
Energy Metering ........................................................................... 5 ?
Analog Peripherals ....................................................................... 6 ?
Digital Interface ............................................................................ 7 ?
Timing Specifications .................................................................. 9 ?
Absolute Maximum Ratings.......................................................... 14 ?
Thermal Resistance .................................................................... 14 ?
ESD Caution ................................................................................ 14 ?
Pin Configuration and Function Descriptions ........................... 15 ?
Typical Performance Characteristics ........................................... 17 ?
Terminology .................................................................................... 20 ?
SFR Mapping ................................................................................... 21 ?
Power Management ........................................................................ 22 ?
Power Management Register Details ....................................... 22 ?
Power Supply Architecture ........................................................ 25 ?
Battery Switchover...................................................................... 25 ?
Power Supply Management (PSM) Interrupt ......................... 26 ?
Using the Power Supply Features ............................................. 28 ?
Operating Modes ............................................................................ 30 ?
PSM0 (Normal Mode) ............................................................... 30 ?
PSM1 (Battery Mode) ................................................................ 30 ?
PSM2 (Sleep Mode).................................................................... 30 ?
3.3 V Peripherals and Wake-Up Events ................................... 31 ?
Transitioning Between Operating Modes ............................... 32 ?
Using the Power Management Features .................................. 32 ?
Energy Measurement ..................................................................... 33 ?
Access to Energy Measurement SFRs ...................................... 33 ?
Access to Internal Energy Measurement Registers ................ 33 ?
Energy Measurement Registers ................................................ 35 ?
Energy Measurement Internal Registers Details .................... 36 ?
Interrupt Status/Enable SFRs .................................................... 38 ?
Analog Inputs .............................................................................. 40 ?
Analog-to-Digital Conversion .................................................. 41 ?
Power Quality Measurements ................................................... 44 ?
Phase Compensation ................................................................. 46 ?
RMS Calculation ........................................................................ 46 ?
Active Power Calculation .......................................................... 48 ?
Active Energy Calculation ........................................................ 50 ?
Reactive Power Calculation ...................................................... 53 ?
Reactive Energy Calculation ..................................................... 54 ?
Apparent Power Calculation ..................................................... 58 ?
Apparent Energy Calculation ................................................... 59 ?
Ampere-Hour Accumulation ................................................... 60 ?
Energy-to-Frequency Conversion............................................ 61 ?
Energy Register Scaling ............................................................. 62 ?
Energy Measurement Interrupts .............................................. 62 ?
8052 MCU CORE Architecture .................................................... 63 ?
MCU Registers ............................................................................ 63 ?
Basic 8052 Registers ................................................................... 65 ?
Standard 8052 SFRs.................................................................... 66 ?
Memory Overview ..................................................................... 66 ?
Addressing Modes ...................................................................... 67 ?
Instruction Set ............................................................................ 69 ?
Read-Modify-Write Instructions ............................................. 71 ?
Instructions That Affect Flags .................................................. 71 ?
Dual Data Pointers ......................................................................... 73 ?
Interrupt System ............................................................................. 74 ?
Standard 8052 Interrupt Architecture ..................................... 74 ?
Interrupt Architecture ............................................................... 74 ?
Interrupt Registers...................................................................... 74 ?
Interrupt Priority ........................................................................ 75 ?
Interrupt Flags ............................................................................ 76 ?
Interrupt Vectors ........................................................................ 78 ?
Interrupt Latency........................................................................ 78 ?
Context Saving ............................................................................ 78 ?
Watchdog Timer ............................................................................. 79 ?
LCD Driver ...................................................................................... 81 ?
LCD Registers ............................................................................. 81 ?
LCD Setup ................................................................................... 84 ?
LCD Timing and Waveforms.................................................... 84 ?
Blink Mode .................................................................................. 85 ?
Display Element Control ........................................................... 85 ?
LCD External Circuitry ............................................................. 86 ?
LCD Function in PSM2 ............................................................. 86 ?
Rev. 0 | Page 2 of 128
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