ADE7754 Analog Devices, ADE7754 Datasheet - Page 35

• Manufacturer Part Number: ADE7754
• Description: Poly-phase Multi-Function Energy Metering IC with Serial Port
• Manufacturer: Analog Devices

REV. PrG 01/03
Address
[A5:A0] Name
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
Reserved
AENERGY
RAENERGY
LAENERGY
VAENERGY
RVAENERGY R
LVAENERGY R
PERIOD
TEMP
W F O R M
O P M O D E
M M O D E
W A V M O D E
W A T M O D E
V A M O D E
MASK
S T A T U S
RSTATUS
R/W*
-
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R
R
PRELIMINARY TECHNICAL DATA
Length
24
24
24
24
24
24
15
8
24
8
8
8
8
8
16
16
16
Table VIII. ADE7754 REGISTER LIST
Default
Value
0
0
0
0
0
0
0
0
0
4
70h
0
3Fh
3Fh
0
0
0
Description
Reserved.
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.
Same as the AENERGY register, except that the internal register
is reset to zero following a read operation.
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.
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.
Same as the VAENERGY register except that the register is reset
to zero following a read operation.
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.
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.
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.
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.
Operational Mode Register. This register defines the general
configuration of the ADE7754. See Table IX.
Measurement Mode register. This register defines the channel
used for Period and Peak detection measurements. See Table XII.
Waveform Mode register. This register defines the channel and
the sampling frequency used in Waveform sampling mode. See
Table XIII.
This register configures the formula applied for the Active Energy
and Line active energy measurements. See Table XIV.
This register configures the formula applied for the Apparent
Energy and Line Apparent Energy measurements. See Table XV.
IRQ Mask register. It determines if an interrupt event will gener-
ate an active-low output at IRQ pin - see Table XVI.
IRQ Status register. This register contains information regarding
the source of ADE7754 interrupts - see Table XVII.
Same as the STATUS register. Except that its contents are reset
to zero (all flags cleared) after a read operation.
–35–
ADE7754