Microchip Technology DM164134 数据表
© 2006 Microchip Technology Inc.
DS41159E-page 353
PIC18FXX8
FIGURE 27-17:
I
2
C™ BUS START/STOP BITS TIMING
TABLE 27-17: I
2
C™ BUS START/STOP BITS REQUIREMENTS (SLAVE MODE)
FIGURE 27-18:
I
2
C™ BUS DATA TIMING
Note: Refer to Figure 27-5 for load conditions.
91
92
93
SCL
SDA
Start
Condition
Stop
Condition
90
Param
No.
Symbol
Characteristic
Min
Max
Units
Conditions
90
T
SU
:
STA
Start Condition
100 kHz mode
4700
—
ns
Only relevant for Repeated
Start condition
Start condition
Setup Time
400 kHz mode
600
—
91
T
HD
:
STA
Start Condition
100 kHz mode
4000
—
ns
After this period, the first
clock pulse is generated
clock pulse is generated
Hold Time
400 kHz mode
600
—
92
T
SU
:
STO
Stop Condition
100 kHz mode
4700
—
ns
Setup Time
400 kHz mode
600
—
93
T
HD
:
STO
Stop Condition
100 kHz mode
4000
—
ns
Hold Time
400 kHz mode
600
—
Note: Refer to Figure 27-5 for load conditions.
90
91
92
100
101
103
106
107
109
109
110
102
SCL
SDA
In
In
SDA
Out
Out