ADE7569 datasheet(41/136 Pages) AD

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Preliminary Technical Data

ADE7566/ADE7569

Rev. PrA | Page 41 of 136

Table 41. Interrupt Enable Register 3 SFR (MIRQENH, 0xDB)

Bit No.

Interrupt Enable Bit

Description

7 to 6

–

Reserved

WFSM

When this bit is set, the WFSM flag set creates a pending ADE interrupt to the 8052 core.

PKI

When this bit is set, the PKI flag set creates a pending ADE interrupt to the 8052 core.

PKV

When this bit is set, the PKV flag set creates a pending ADE interrupt to the 8052 core.

CYCEND

When this bit is set, the CYCEND flag set creates a pending ADE interrupt to the 8052 core.

ZXTO

When this bit is set, the ZXTO flag set creates a pending ADE interrupt to the 8052 core.

When this bit is set, the ZX flag set creates a pending ADE interrupt to the 8052 core.

ANALOG INPUTS

The ADE7566/ADE7569 has two fully differential voltage input

channels. The maximum differential input voltage for input pairs

VP/VN and IP/IN is ±0.5 V. In addition, the maximum signal level

on analog inputs for VP/VN and IP/IN is ± 0.5 V with respect to

AGND.

Each analog input channel has a programmable gain amplifier

(PGA) with possible gain selections of 1, 2, 4, 8, and 16. The

gain selections are made by writing to the GAIN register in the

Energy Measurement Register List (see Table 35 and Figure 31).

Bit 0 to Bit 2 select the gain for the PGA in the current channel,

and Bit 5 to Bit 7 select the gain for the PGA in the voltage

channel. Figure 30 shows how a gain selection for the current

channel is made using the gain register.

In addition to the PGA, Channel 1 also has a full-scale input

range selection for the ADC. The gain register also selects the

ADC analog input range (see Figure 31). As mentioned

previously, the maximum differential input voltage is 0.5 V.

K × VIN

VP1

VN1

000

0000

7654

3210

GAIN[7:0]

GAIN (K)

SELECTION

VIN

Figure 30. PGA in Current Channel

000

654

GAIN REGISTER*

CURRENT AND VOLTAGE CHANNELS PGA CONTROL

PGA 2 GAIN SELECT

000 = × 1

001 = × 2

010 = × 4

011 = × 8

100 = × 16

PGA 1 GAIN SELECT

000 = × 1

001 = × 2

010 = × 4

011 = × 8

100 = × 16

RESERVED

*REGISTER CONTENTS SHOW POWER-ON DEFAULTS.

ADDR:

0x1B

CFSIGN_OPT

Figure 31. Analog Gain Register

ADE7569 数据表(PDF) 41 Page - Analog Devices

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