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ADE7566/ADE7569
TABLE OF CONTENTS
General Features ............................................................................... 1
Energy Measurement Features........................................................ 1
Microprocessor Features.................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 4
Specifications..................................................................................... 5
Timing Specifications....................................................................... 9
Absolute Maximum Ratings.......................................................... 16
Thermal Resistance .................................................................... 16
ESD Caution................................................................................ 16
Pin Configuration and Function Descriptions........................... 17
Typical Performance Characteristics ........................................... 19
Terminology .................................................................................... 21
SFR Mapping ................................................................................... 22
Power Management........................................................................ 23
Power Management Register Details ....................................... 23
Power Supply Architecture........................................................ 26
Battery Switchover...................................................................... 26
Power Supply Monitor Interrupt (PSM).................................. 27
Using the Power Supply Features ............................................. 29
Operating Modes ............................................................................ 31
PSM0 (Normal Mode) ............................................................... 31
PSM1 (Battery Mode) ................................................................ 31
PSM2 (Sleep Mode).................................................................... 31
3.3 V Peripherals and Wake-Up Events................................... 32
Transitioning Between Operating Modes ............................... 33
Using the Power Management Features .................................. 33
Energy Measurement ..................................................................... 34
Access to Energy Measurement SFRs ...................................... 34
Access to Internal Energy Measurement Registers................ 34
Energy Measurement Registers ................................................ 36
Energy Measurement Internal Registers Details.................... 37
Analog Inputs.............................................................................. 41
Analog-to-Digital Conversion.................................................. 42
di/dt Current Sensor and Digital Integrator
for the ADE7569......................................................................... 44
Power Quality Measurements................................................... 46
Phase Compensation.................................................................. 48
RMS Calculation......................................................................... 48
Active Power Calculation .......................................................... 50
Preliminary Technical Data
Active Energy Calculation ........................................................ 52
Reactive Power Calculation for the ADE7569 ....................... 55
Reactive Energy Calculation for the ADE7569 ...................... 56
Apparent Power Calculation..................................................... 60
Apparent Energy Calculation ................................................... 61
Ampere-Hour Accumulation ................................................... 62
Energy-to-Frequency Conversion............................................ 63
Energy Register Scaling ............................................................. 63
Energy Measurement Interrupts .............................................. 64
Temperature, Battery, and Supply Voltage Measurements........ 65
Temperature Measurement ....................................................... 67
Battery Measurement................................................................. 67
External Voltage Measurement ................................................ 68
8052 MCU CORE Architecture.................................................... 70
MCU Registers............................................................................ 70
Basic 8052 Registers ................................................................... 72
Standard 8052 SFRs.................................................................... 73
Memory Overview ..................................................................... 73
Addressing Modes...................................................................... 74
Instruction Set ............................................................................ 76
Read-Modify-Write Instructions ............................................. 78
Instructions That Affect Flags .................................................. 78
Interrupt System ............................................................................. 80
Standard 8051 Interrupt Architecture ..................................... 80
Interrupt Architecture ............................................................... 80
Interrupt Registers...................................................................... 80
Interrupt Priority........................................................................ 81
Interrupt Flags ............................................................................ 82
Interrupt Vectors ........................................................................ 84
Interrupt Latency........................................................................ 84
Context Saving............................................................................ 84
Watchdog Timer ............................................................................. 85
LCD Driver...................................................................................... 87
LCD Registers ............................................................................. 87
LCD Setup ................................................................................... 90
LCD Timing and Waveforms.................................................... 90
BLINK Mode............................................................................... 91
Display Element Control........................................................... 91
Voltage Generation .................................................................... 92
LCD External Circuitry ............................................................. 92
Rev. PrA | Page 2 of 136
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