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ADE7978 Datasheet(PDF) 10 Page - Analog Devices

Part # ADE7978
Description  Isolated Energy Metering Chipset for Polyphase Shunt Meters
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADE7978 Datasheet(HTML) 10 Page - Analog Devices

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ADE7978/ADE7933/ADE7932
Data Sheet
Rev. 0 | Page 10 of 120
I2C Interface Timing Parameters
VDD = 3.3 V ± 10%, GND = DGND = 0 V, XTALIN = 16.384 MHz, TMIN to TMAX = −40°C to +85°C.
Table 3.
Standard Mode
Fast Mode
Parameter
Symbol
Min
Max
Min
Max
Unit
SCL Clock Frequency
fSCL
0
100
0
400
kHz
Hold Time for Start and Repeated Start Conditions
tHD;STA
4.0
0.6
μs
Low Period of SCL Clock
tLOW
4.7
1.3
µs
High Period of SCL Clock
tHIGH
4.0
0.6
µs
Set-Up Time for Repeated Start Condition
tSU;STA
4.7
0.6
µs
Data Hold Time
tHD;DAT
0
3.45
0
0.9
µs
Data Setup Time
tSU;DAT
250
100
ns
Rise Time of SDA and SCL Signals
tR
1000
20
300
ns
Fall Time of SDA and SCL Signals
tF
300
20
300
ns
Setup Time for Stop Condition
tSU;STO
4.0
0.6
µs
Bus Free Time Between a Stop and Start Condition
tBUF
4.7
1.3
µs
Pulse Width of Suppressed Spikes
tSP
N/A1
50
ns
1
N/A means not applicable.
tF
tR
tHD;DAT
tHD;STA
tHIGH
tSU;STA
tSU;DAT
tF
tHD;STA
tSP
tSU;STO
tr
tBUF
tLOW
SDA
SCL
START
CONDITION
REPEATED START
CONDITION
STOP
CONDITION
START
CONDITION
Figure 5. I2C Interface Timing


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