90E21 Datasheet, PDF (23/57 Pages) Integrated Device Technology – Single-Phase High-Performance Wide-Span Energy Metering IC

90E21/22/23/24
SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
FuncEn
Function Enable
Address: 02H
Type: Read/Write
Default Value: 000CH
15
14
13
12
11
10
9
-
-
-
-
-
-
-
7
6
5
4
3
2
1
-
-
SagEn
SagWo
RevQEn
RevPEn
-
Bit
15 - 6
5
4
3
2
1-0
Name
-
SagEn
SagWo
RevQEn
RevPEn
-
Description
Reserved.
This bit determines whether to enable the voltage sag interrupt.
0: disable (default)
1: enable
This bit determines whether to enable voltage sag to be reported by the WarnOut pin.
0: disable (default)
1: enable
This bit determines whether to enable the direction change interrupt of reactive energy.
0: disable
1: enable (default)
This bit determines whether to enable the direction change interrupt of active energy.
0: disable
1: enable (default)
Reserved.
SagTh
Voltage Sag Threshold
Address: 03H
Type: Read/Write
Default Value: 1D6AH
15
14
SagTh15
SagTh14
7
6
SagTh7
SagTh6
13
SagTh13
5
SagTh5
12
SagTh12
4
SagTh4
11
SagTh11
3
SagTh3
10
SagTh10
2
SagTh2
9
SagTh9
1
SagTh1
Bit
15 - 0
Name
SagTh[15:0]
Description
Voltage sag threshold configuration. Data format is XXX.XX. Unit is V.
The power-on value of SagTh is 1D6AH, which is calculated by 22000*sqrt(2)*0.78/(4*Ugain/32768)
For details, please refer to IDT application note AN-641.
8
-
0
-
8
SagTh8
0
SagTh0
Register
23
January 10, 2012