ADE7753 View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADE7753' PDF : 60 Pages View PDF
ADE7753
INTERRUPT STATUS REGISTER (0x0B), RESET INTERRUPT STATUS REGISTER (0x0C),
INTERRUPT ENABLE REGISTER (0x0A)
The status register is used by the MCU to determine the source of an interrupt request (IRQ). When an interrupt event occurs in the
ADE7753, the corresponding flag in the interrupt status register is set to logic high. If the enable bit for this flag is Logic 1 in the interrupt
enable register, the IRQ logic output goes active low. When the MCU services the interrupt, it must first carry out a read from the
interrupt status register to determine the source of the interrupt.
Table 15. Interrupt Status Register, Reset Interrupt Status Register, and Interrupt Enable Register
Bit Location Interrupt Flag Description
0
AEHF
Indicates that an interrupt occurred because the active energy register, AENERGY, is more than half full.
1
SAG
Indicates that an interrupt was caused by a SAG on the line voltage.
2
CYCEND
Indicates the end of energy accumulation over an integer number of half line cycles as defined by
the content of the LINECYC register—see the Line Cycle Energy Accumulation Mode section.
3
WSMP
Indicates that new data is present in the waveform register.
4
ZX
This status bit is set to Logic 0 on the rising and falling edge of the the voltage waveform.
See the Zero-Crossing Detection section.
5
TEMP
Indicates that a temperature conversion result is available in the temperature register.
6
RESET
Indicates the end of a reset (for both software or hardware reset). The corresponding enable bit has no
function in the interrupt enable register, i.e., this status bit is set at the end of a reset, but it cannot
be enabled to cause an interrupt.
7
AEOF
Indicates that the active energy register has overflowed.
8
PKV
Indicates that waveform sample from Channel 2 has exceeded the VPKLVL value.
9
PKI
Indicates that waveform sample from Channel 1 has exceeded the IPKLVL value.
A
VAEHF
Indicates that an interrupt occurred because the active energy register, VAENERGY, is more than half full.
B
VAEOF
Indicates that the apparent energy register has overflowed.
C
ZXTO
Indicates that an interrupt was caused by a missing zero crossing on the line voltage for the specified
number of line cycles—see the Zero-Crossing Timeout section.
D
PPOS
Indicates that the power has gone from negative to positive.
E
PNEG
Indicates that the power has gone from positive to negative.
F
RESERVED
Reserved.
RESERVED
PNEG
(POWER POSITIVE TO NEGATIVE)
PPOS
(POWER NEGATIVE TO POSITIVE)
ZXTO
(ZERO-CROSSING TIMEOUT)
VAEOF
(VAENERGY OVERFLOW)
VAEHF
(VAENERGY IS HALF-FULL)
PK1
(CHANNEL 1 SAMPLE ABOVE IPKLVL)
PKV
(CHANNEL 2 SAMPLE ABOVE VPKLVL)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ADDR: 0x0A, 0x0B, 0x0C
Figure 96. Interrupt Status/Interrupt Enable Register
AEHF
(ACTIVE ENERGY HALF-FULL)
SAG
(SAG ONLINE VOLTAGE)
CYCEND
(END OF LINECYC HALF LINE CYCLES)
WSMP
(WAVEFORM SAMPLES DATA READY)
ZX
(ZERO CROSSING)
TEMPL
(TEMPERATURE DATA READY)
RESET
(END OF SOFTWARE/HARDWARE RESET)
AEOF
(ACTIVE ENERGY REGISTER OVERFLOW)
02875-A-013
Rev. C | Page 57 of 60
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