ADE7566 datasheet(4/144 Pages) AD

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ADE7566/ADE7569/ADE7166/ADE7169

Rev. A | Page 4 of 144

GENERAL DESCRIPTION

The ADE7566/ADE7569/ADE7166/ADE71691 integrate Analog

Devices, Inc., energy (ADE) metering IC analog front end and

fixed function DSP solution with an enhanced 8052 MCU core,

an RTC, an LCD driver, and all the peripherals to make an

electronic energy meter with an LCD display in a single part.

such as SAG, peak, and zero crossing are included in the energy

measurement DSP to simplify energy meter design.

The microprocessor functionality includes a single-cycle 8052 core,

a real-time clock with a power supply backup pin, a UART, and an

SPI or I2C® interface. The ready-to-use information from the

ADE core reduces the program memory size requirement, making

it easy to integrate complicated design into 16 kB of flash

memory.

The ADE measurement core includes active, reactive, and apparent

energy calculations, as well as voltage and current rms measure-

ments. This information is ready to use for energy billing by using

built-in energy scalars. Many power line supervisory features

The ADE7566/ADE7569/ADE7166/ADE7169 also include a

108-/104-segment LCD driver. This driver generates voltages

capable of driving LCDs up to 5 V.

1 Patents pending.

FUNCTIONAL BLOCK DIAGRAMS

ENERGY

MEASUREMENT

DSP

OSC

COM0

...

COM3

LDO

3V/5V LCD

CHARGE PUMP

SINGLE

CYCLE

8052

MCU

ADE7566/ADE7569

FP26

VBAT

DGND

AGND

UART

SERIAL

PORT

LCDVA

LCDVB

LCDVC

FP0

FP15

RTC

LCDVP1

LCDVP2

FP16

FP17

FP23

FP22

FP21

FP20

FP19

FP18

FP25

FP24

P2.0 (FP18)

P2.1 (FP17)

P2.2 (FP16)

P2.3 (SDEN)

1.20V

REF

43 42

39 38 7

45 11 43 42 41 40 39 38

37 36 5

9 10

38 39 40 41

PGA2

–

PGA1

–

ADC

TEMP

ADC

VDCIN

ADC

PROGRAM MEMORY

16kB FLASH

POWER SUPPLY

CONTROL AND

MONITORING

USER RAM

256 BYTES

USER XRAM

256 BYTES

TEMP

SENSOR

BATTERY

ADC

SPI/I2C

SERIAL

INTERFACE

3 × 16-BIT

COUNTER

TIMERS

108-SEGMENT

LCD DRIVER

WATCHDOG

TIMER

DOWNLOADER

DEBUGGER

PLL

LDO

UART

TIMER

POR

Figure 1. ADE7566/ADE7569 Functional Block Diagram

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