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EM3027IDSWS8 데이터시트(PDF) 22 Page - EM Microelectronic - MARIN SA

부품명 EM3027IDSWS8
상세설명  Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and Trickle Charger
PDF  28 Pages
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제조업체  EMMICRO [EM Microelectronic - MARIN SA]
홈페이지  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

EM3027IDSWS8 데이터시트(HTML) 22 Page - EM Microelectronic - MARIN SA

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EM3027
Copyright
 2013, EM Microelectronic-Marin SA
3027-DS.doc, Version 8.0, 25-Jan-13
22
www.emmicroelectronic.com
10 AC Characteristics
10.1
AC characteristics
– I2C
VSS = 0V and TA=-40 to +125°C, unless otherwise specified
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SCL Clock Frequency
fSCL
Vcc
 3.0V
400
kHz
Vcc >1.8V
300
Vcc>1.4V
100
Bus Free Time Between STOP and
START Condition
tBUF
Vcc
 3.0V
0.6
μs
Vcc >1.8V
0.8
Vcc>1.4V
1.0
Hold Time (Repeated) START
Condition
tHD:STA
Vcc
 3.0V
0.3
0.4
0.5
μs
Vcc >1.8V
Vcc>1.4V
LOW Period of SCL Clock
tLOW
Vcc
 3.0V
1.3
μs
Vcc >1.8V
1.7
Vcc>1.4V
4.5
HIGH Period of SCL Clock
tHIGH
Vcc
 3.0V
0.6
μs
Vcc >1.8V
0.7
Vcc>1.4V
0.9
Setup Time START Condition
tSU:STA
Vcc
 3.0V
0.3
ns
Vcc >1.8V
0.4
Vcc>1.4V
0.5
Data Hold Time
tHD:DAT
Vcc
 3.0V
0.3
ns
Vcc >1.8V
0.4
Vcc>1.4V
0.5
Data Setup Time
tSU:DAT
Vcc
 3.0V
0.3
ns
Vcc >1.8V
0.4
Vcc>1.4V
0.5
Data Valid Time
tVD:DAT
Vcc
 3.0V
1.2
μs
Vcc >1.8V
1.5
Vcc>1.4V
4.0
Data Valid Acknowledge Time
tVD:ACK
Vcc
 3.0V
0.9
μs
Vcc >1.8V
1.1
Vcc>1.4V
3.5
Rise Time of Both SDA and SCL
Signals
tR
Vcc
 3.0V
200
ns
Vcc >1.8V
300
Vcc>1.4V
1000
Fall Time of Both SDA and SCL
Signals (See note 1)
tF
Vcc
 3.0V
200
ns
Vcc >1.8V
300
Vcc>1.4V
400
Setup Time (Repeated) STOP
Condition
tSU:STO
Vcc
 3.0V
0.3
ns
Vcc >1.8V
0.4
Vcc>1.4V
0.5
Length of spikes suppressed by the
input filter on SCL and SDA
tSP
50
ns
Capacitive Load For Each Bus Line
CB
200
pF
I/O Capacitance (SDA, SCL)
CI/O
10
pF
Table 13: I2C AC characteristics
Parameters are guaranteed by design. They are not tested in production
.
Calculation of external pull
–up resistor



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