636
Chapter 18
I
2
C Bus (IIC)
Preliminary User’s Manual U17566EE1V2UM00
Figure 18-23
Example of slave to master communication
(when 9-clock wait is selected for both master and slave) (2/3)
(b) data
Note
To cancel master wait, write FFH to IICn or set WRELn.
IICn
ACKDn
S
TDn
S
PDn
WTIMn
H
H
H
L
L
L
L
L
L
H
H
H
L
L
L
L
L
ACKEn
M
S
T
S
n
S
TTn
S
PTn
WRELn
INTIICn
TRCn
IICn
ACKDn
S
TDn
S
PDn
WTIMn
ACKEn
M
S
T
S
n
S
TTn
S
PTn
WRELn
INTIICn
TRCn
S
CL0n
S
DA0n
Proce
ss
ing
b
y m
as
ter device
Tr
a
n
s
fer line
s
Proce
ss
ing
b
y
s
l
a
ve device
1
8
9
2
3
4
5
6
7
8
9
3
2
1
D7
D0
ACK
D6
D5
D4
D
3
D2
D1
D0
ACK
D5
D6
D7
Note
Note
Receive
Tr
a
n
s
mit
IICn
←
d
a
t
a
IICn
←
d
a
t
a
IICn
←
FFH
Note
IICn
←
FFH
Note
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