High Speed I2C Compatible Bus
MC44BS374T1/374T1A Advance Information
17 High Speed I2C Compatible Bus
17.1 Specification Conditions
Unless otherwise specified, Vcc=5.0V, TA=25oC.
17.2 Timing Definitions
Figure 10. SSDA/SSCL Timing
Electrical Characteristics
Symbol
Min
Typ
Max
Unit
Type
SDA / SCL output current at 0V
-5
-2
-
A
SDA / SCL low input level
VIL
-
1.5
V
B
SDA / SCL high input level
VIH
2.1
-
V
B
SDA/SCL input current for input level from 0.4V to 0.3Vcc
-5
-
5
A
C
SDA/SCL input level
0
-
Vcc+0,3
V
D
SDA/SCL capacitance
-
10
pF
C
ACK low output level (3 mA sinking current)
-
0.3
V
C
ACK low output level (9 mA sinking current)
-
0.8
V
C
Timing Characteristics
Symbol
Min
Typ
Max
Unit
Type
Bus clock frequency
0
-
800
kHz
C
Bus free time between stop and start
Tbuf
200
-
ns
C
Setup time for start condition
Tsu;sta
500
-
ns
C
Hold time for start condition
Thd;sta
500
-
ns
C
Data setup time
Tsu;dat
0
-
ns
C
Data hold time
Thd;dat
0
-
ns
C
Setup time for stop condition
Tsu;sto
500
-
ns
C
Hold time for stop condition
Thd;sto
500
-
ns
C
Acknowledge propagation delay
Tack;low
-
300
ns
C
SDA fall time at 3ma sink I and 130pF load
-
50
ns
C
SDA fall time at 3ma sink I and 400pF load
-
80
ns
C
SDA rise time
SCL fall/rise time
-
300
ns
C
Pulse width of spikes suppressed by the input filter
-
50
ns
C
Tbuf
SSDA
...
ACK
Thd;dat
Tsu;dat
Tsu;sto Thd;sta
Tack:low
Start
Stop
SSCL
SCL
SDA
Tsu;sta
Chip Address
SCL
SDA
Thd;sto
Start
Stop
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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