EM3027
10.3 AC characteristics – SPI
VSS = 0V and TA=-40 to +125°C, unless otherwise specified
PARAMETER
SCK Clock Frequency
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
fSCK
MHz
1
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
Vcc 3.0V
Vcc >1.8V
Vcc >1.4V
600
200
kHz
ns
Data to SCK setup
SCK to Data Hold
SCK to Data Valid
SCK Low Time
tDC
tCDH
tCDD
tCL
20
200
300
500
ns
ns
ns
ns
ns
ns
ns
ns
ns
350
650
1300
400
700
1500
400
SCK High Time
tCH
700
1500
SCK Rise and Fall
CS to SCK Setup
SCK to CS Hold
tR , tF
200
800
tCC
100
tCCH
tCWL
tCDZ
200
300
500
200
300
400
CS Inactive Time
CS to Output High Impedance
50
100
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.
24
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Copyright 2013, EM Microelectronic-Marin SA
3027-DS.doc, Version 8.0, 25-Jan-13
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