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9.6 Two-Wire Serial Timings
Figure 9.8
Two-Wire Serial Bus Timings
SCL
SDA
t
1
Start
Condition
Table 9.18
Two-Wire Serial Interface Timings, Normal Mode (100 KHz Clock)
Symbol
Description
t
Hold time after start condition
1
t
Data hold
2
Data setup
t
3
t
SCL low period
4
t
SCL high period
5
Table 9.19
Two-Wire Interface Timings, Fast Mode (400 KHz Clock)
Symbol
Description
t
Hold time after start condition
1
t
Data hold
2
t
Data setup
3
t
SCL low period
4
t
SCL high period
5
The SYM53C040 Two-Wire Serial interface timings comply with the I
specification. Please refer to the specification for more information.
t
t
4
5
t
2
Address, Data
Data Allowed
or Acknowledge
to Change
Valid
Two-Wire Serial Timings
t
3
Stop
Start
Condition
Condition
Min
Max
4.0
–
0
–
250
–
4.7
–
4.0
–
Min
Max
0.6
–
0
0.9
100
–
1.3
–
0.6
–
2
C
Units
µs
µs
ns
µs
µs
Units
µs
µs
ns
µs
µs
9-13
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