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