ADE7754 datasheet(35/44 Pages) AD

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REV. PrG 01/03

PRELIMINARY TECHNICAL DATA

ADE7754

– 35 –

Table VIII. ADE7754 REGISTER LIST

Address

Default

[A5:A0]

Name

R/W*

Length

Value

Description

00h

Reserved

Reserved.

01h

AENERGY

Active Energy register. Active power is accumulated over time in

an internal register. The AENERGY register is a read only regis-

ter that reads this internal register and can hold a minimum of 88

seconds of active energy information with full-scale analog inputs

before it overflows - See Energy Calculation. Bit 7 to 3 of the

WATMODE register determine how the Active energy is pro-

cessed from the six Analog inputs - see Table XIV.

02h

RAENERGY

Same as the AENERGY register, except that the internal register

is reset to zero following a read operation.

03h

LAENERGY

Line Accumulation Active Energy register. The instantaneous

active power is accumulated in this read-only register over the

LINCYC number of half line cycles. Bit 2 to 0 of the

WATMODE register determines, how the Line Accumulation

Active energy is processed from the six Analog inputs - see Table

XIV.

04h

VAENERGY

VA Energy register. Apparent power is accumulated over time in

this read-only register. Bit 7 to 3 of the VAMODE register deter-

mines, how the Apparent energy is processed from the six Analog

inputs - see Table XV.

05h

RVAENERGY R

Same as the VAENERGY register except that the register is reset

to zero following a read operation.

06h

LVAENERGY R

Apparent Energy register. The instantaneous Apparent power is

accumulated in this read-only register over the LINCYC number

of half line cycles. Bit 2 to 0 of the VAMODE register determines

how the Apparent energy is processed from the six Analog inputs

- see Table XV.

07h

PERIOD

Period of the line input estimated by Zero-crossing processing.

Data bits 0 to 1 and 4 to 6 of the MMODE register determines

the voltage channel used for Period calculation - see table XII.

08h

TEMP

Temperature register. This register contains the result of the lat-

est temperature conversion. Please refer to Temperature Measurement

section on this datasheet for details on how to interpret the con-

tent of this register.

09h

WFORM

Waveform register. This register contains the digitized waveform

of one of the six analog inputs.

The source is selected by data

bits 0 to 2 in the WAVMode register - see Table XIII.

0Ah

OPMODE

R / W

Operational Mode Register. This register defines the general

configuration of the ADE7754. See Table IX.

0Bh

MMODE

R / W

70h

Measurement Mode register. This register defines the channel

used for Period and Peak detection measurements. See Table XII.

0Ch

WAVMODE

R / W

Waveform Mode register. This register defines the channel and

the sampling frequency used in Waveform sampling mode. See

Table XIII.

0Dh

WATMODE

R / W

3Fh

This register configures the formula applied for the Active Energy

and Line active energy measurements. See Table XIV.

0Eh

VAMODE

R / W

3Fh

This register configures the formula applied for the Apparent

Energy and Line Apparent Energy measurements. See Table XV.

0Fh

MASK

R / W

IRQ Mask register. It determines if an interrupt event will gener-

ate an active-low output at IRQ pin - see Table XVI.

10h

STATUS

IRQ Status register. This register contains information regarding

the source of ADE7754 interrupts - see Table XVII.

11h

RSTATUS

Same as the STATUS register. Except that its contents are reset

to zero (all flags cleared) after a read operation.

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