ADE7754AR Analog Devices Inc, ADE7754AR Datasheet - Page 40

• Manufacturer Part Number: ADE7754AR
• Description: IC ENERY METER 3PHASE 24-SOIC
• Manufacturer: Analog Devices Inc

Specifications of ADE7754AR

• Input Impedance: 370 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.8V
• Current - Supply: 7mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (0.300", 7.50mm Width)
• Meter Type: 3 Phase
• For Use With: EVAL-ADE7754EBZ - BOARD EVALAUTION FOR ADE7754
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AD71049AR; AD71049AR

ADE7754
Interrupt Status Register (10h)/Reset Interrupt Status Register (11h)
The interrupt status register is used to determine the source of an interrupt event. When an interrupt event occurs in the ADE7754,
the corresponding flag in the interrupt status register is set logic high. The IRQ pin will go active low if the corresponding bit in the
interrupt enable register is set logic high. When the MCU services the interrupt, it must first carry out a read from the interrupt sta-
tus register to determine the source of the interrupt. All the interrupts in the interrupt status register stay at their logic high state after
an event occurs. The state of the interrupt bit in the interrupt status register is reset to its default value once the reset interrupt status
register is read.
Bit
Location
0
1
2
3
4
5
6
7
8
9
Ah
Bh
Ch
Dh
Eh
Fh
(END OF THE LAENERGY AND LVAENERGY ACCUMULATION)
(APPARENT ENERGY REGISTER HALF FULL)
Interrupt
Flag
AEHF
SAGA
SAGB
SAGC
ZXTOA
ZXTOB
ZXTOC
ZXA
ZXB
ZXC
LENERGY
RESET
PKV
PKI
WFSM
VAEHF
(CURRENT CHANNEL PEAK DETECTION)
(VOLTAGE CHANNEL PEAK DETECTION)
(NEW WAVEFORM SAMPLE READY)
Default Event
Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
In line energy accumulation, it indicates the end of an integration over an integer number of
Description
Indicates that an interrupt was caused by the 0 to 1 transition of the MSB of the AENERGY
register (i.e., the AENERGY register is half full).
Indicates that an interrupt was caused by a SAG on the line voltage of the Phase A.
Indicates that an interrupt was caused by a SAG on the line voltage of the Phase B.
Indicates that an interrupt was caused by a SAG on the line voltage of the Phase C.
Indicates that an interrupt was caused by a missing zero crossing on the line voltage of the Phase A.
Indicates that an interrupt was caused by a missing zero crossing on the line voltage of the Phase B.
Indicates that an interrupt was caused by a missing zero crossing on the line voltage of the Phase C.
Indicates a detection of rising zero crossing in the voltage channel of the Phase A.
Indicates a detection of rising zero crossing in the voltage channel of the Phase B.
Indicates a detection of rising zero crossing in the voltage channel of the Phase C.
half line cycles (LINCYC). See the Energy Calculation section.
Indicates that the ADE7754 has been reset.
Indicates that an interrupt was caused when the selected voltage input is above the value in the
PKVLV register.
Indicates that an interrupt was caused when the selected current input is above the value in the
PKILV register.
Indicates that new data is present in the waveform register.
Indicates that an interrupt was caused by the 0 to 1 transition of the MSB of the VAENERGY
register (i.e., the VAENERGY register is half full).
VAEHF
LENERGY
WFSM
F
0
PKI
PKV
E
0
D
0
Table XVII. STATUS Register
RESET
*REGISTER CONTENTS SHOW POWER-ON DEFAULTS
C
0
B
0
INTERRUPT STATUS REGISTER*
A
0
–40–
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
AEHF
(ACTIVE ENERGY REGISTER HALF FULL)
SAG
(SAG EVENT DETECT)
ZX
(ZERO-CROSSING TIMEOUT DETECTION)
ZX
(ZERO-CROSSING DETECTION)
0
0
ADDR: 10h
REV. 0