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90E21 Datasheet(PDF) 23 Page - Integrated Device Technology

Part # 90E21
Description  Single-Phase High-Performance Wide-Span Energy Metering IC
PDF  57 Pages
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

90E21 Datasheet(HTML) 23 Page - Integrated Device Technology

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90E21/22/23/24
SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Register
23
January 10, 2012
FuncEn
Function Enable
SagTh
Voltage Sag Threshold
Address: 02H
Type: Read/Write
Default Value: 000CH
Bit
Name
Description
15 - 6
-
Reserved.
5SagEn
This bit determines whether to enable the voltage sag interrupt.
0: disable (default)
1: enable
4SagWo
This bit determines whether to enable voltage sag to be reported by the WarnOut pin.
0: disable (default)
1: enable
3RevQEn
This bit determines whether to enable the direction change interrupt of reactive energy.
0: disable
1: enable (default)
2
RevPEn
This bit determines whether to enable the direction change interrupt of active energy.
0: disable
1: enable (default)
1 - 0
-
Reserved.
Address: 03H
Type: Read/Write
Default Value: 1D6AH
Bit
Name
Description
15 - 0
SagTh[15:0]
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.
15
14
13
12
11
10
9
8
-
---
---
-
765
432
1
0
-
-
SagEn
SagWo
RevQEn
RevPEn
-
-
15
14
13
12
11
10
9
8
SagTh15
SagTh14
SagTh13
SagTh12
SagTh11
SagTh10
SagTh9
SagTh8
765
432
1
0
SagTh7
SagTh6
SagTh5
SagTh4
SagTh3
SagTh2
SagTh1
SagTh0



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