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參數(shù)資料
| 型號： | EVAL-ADE7756EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Active Energy Metering IC with Serial Interface |
| 中文描述： | 有源電能計(jì)量IC串行接口 |
| 文件頁數(shù)： | 31/32頁 |
| 文件大小： | 347K |
| 代理商： | EVAL-ADE7756EB |
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REV. 0
ADE7756
–31–
Interrupt Status Register (04H) / Reset Interrupt Status Register (05H)
The Status register is used by the MCU to determine the source of an interrupt request (
IRQ
). When an interrupt event occurs in the
ADE7756, the corresponding flag in the Interrupt Status register is set logic high. If the enable bit for this flag is Logic 1 in the Inter-
rupt 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 VII. Interrupt Status Register, Reset Interrupt Status Register and Interrupt Enable Register
Bit
Location
Interrupt
Flag
Description
0
1
AEHF
SAG
Indicates that an interrupt was caused by the 0 to 1 transition of the MSB of the Active Energy register.
Indicates that an interrupt was caused by a SAG on the line voltage or no zero crossings were detected.
In calibration mode this flag is also used to indicate the end of an integration over an integer number of
half line cycles—see Energy Calibration section.
Indicates that new data is present in the Waveform register.
This status bit reflects the status of the ZX logic output—see Zero Crossing Detection section.
Indicates that a temperature conversion result is available in the Temperature register.
Indicates that the Active Energy register has overflowed.
3
4
5
7
WSMP
ZX
TEMP
AEOF
INTERRUPT STATUS REGISTER
*
ADDR: 04H / RESET: 05H
AEOF
(ACTIVE ENERGY REGISTER OVERFLOW)
RESERVED = 0
TEMP
ZX
*
REGISTER CONTENTS SHOW POWER-ON DEFAULTS
0
0
0
0
0
0
0
0
7
6
5
4
3
2
1
0
AEHF
(ACTIVE ENERGY REGISTER HALF FULL)
SAG
(LINE VOLTAGE SAG DETECT)
RESERVED = 0
WSMP
(WAVEFORM SAMPLING)
Figure 42. Interrupt Status Register
INTERRUPT ENABLE REGISTER
*
ADDR: 10H
AEOF
(ACTIVE ENERGY REGISTER OVERFLOW)
RESERVED = 0
TEMP
ZX
*
REGISTER CONTENTS SHOW POWER-ON DEFAULTS
0
0
0
0
0
0
0
0
7
6
5
4
3
2
1
0
AEHF
(ACTIVE ENERGY REGISTER HALF FULL)
SAG
(LINE VOLTAGE SAG DETECT)
RESERVED = 0
WSMP
(WAVEFORM SAMPLING)
Figure 43. Interrupt Enable Register
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相關(guān)代理商/技術(shù)參數(shù) |
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