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EM3027IDSWS8 Datasheet(PDF) 24 Page - EM Microelectronic - MARIN SA

Part # EM3027IDSWS8
Description  Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and Trickle Charger
PDF  28 Pages
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Manufacturer  EMMICRO [EM Microelectronic - MARIN SA]
Direct Link  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

EM3027IDSWS8 Datasheet(HTML) 24 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
24
www.emmicroelectronic.com
10.3
AC characteristics
– SPI
VSS = 0V and TA=-40 to +125°C, unless otherwise specified
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SCK Clock Frequency
fSCK
Vcc
 3.0V
1
MHz
Vcc >1.8V
600
kHz
Vcc >1.4V
200
Data to SCK setup
tDC
Vcc
 3.0V
20
ns
Vcc >1.8V
Vcc >1.4V
SCK to Data Hold
tCDH
Vcc
 3.0V
200
ns
Vcc >1.8V
300
Vcc >1.4V
500
SCK to Data Valid
tCDD
Vcc
 3.0V
350
ns
Vcc >1.8V
650
Vcc >1.4V
1300
SCK Low Time
tCL
Vcc
 3.0V
400
ns
Vcc >1.8V
700
Vcc >1.4V
1500
SCK High Time
tCH
Vcc
 3.0V
400
ns
Vcc >1.8V
700
Vcc >1.4V
1500
SCK Rise and Fall
tR , tF
Vcc
 3.0V
200
ns
Vcc >1.8V
800
Vcc >1.4V
CS to SCK Setup
tCC
Vcc
 3.0V
100
ns
Vcc >1.8V
Vcc >1.4V
SCK to CS Hold
tCCH
Vcc
 3.0V
200
ns
Vcc >1.8V
300
Vcc >1.4V
500
CS Inactive Time
tCWL
Vcc
 3.0V
200
ns
Vcc >1.8V
300
Vcc >1.4V
400
CS to Output High Impedance
tCDZ
Vcc
 3.0V
50
ns
Vcc >1.8V
100
Vcc >1.4V
200
Table 14: SPI AC characteristics
Parameters are guaranteed by design. They are not tested in production
.
1) Max. bus capacitance on SO line shall be lower than 100pF when Vcc > 1.8V and lower than 50pF when Vcc < 1.8V.
2) Spikes on SCK signal shorter than 20ns are suppressed.



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