CHAPTER 11 SERIAL INTERFACE FUNCTION
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User’s Manual U15109EJ3V0UD
Figure 11-41. Example of Slave to Master Communication
(When 9-Clock Wait Is Selected for Both Master and Slave) (2/3)
(b) Data
IICn
ACKDn
STDn
SPDn
WTIMn
H
H
H
L
L
L
L
L
L
H
H
H
L
L
L
L
L
ACKEn
MSTSn
STTn
SPTn
WRELn
INTIICn
TRCn
IICn
ACKDn
STDn
SPDn
WTIMn
ACKEn
MSTSn
STTn
SPTn
WRELn
INTIICn
TRCn
SCLn
SDAn
Processing by master device
Transfer lines
Processing by slave device
1
8
9
2
3
4
5
6
7
8
9
3
2
1
D7
D0
ACK
D6
D5
D4
D3
D2
D1
D0
ACK
D5
D6
D7
Note
Note
Receive
Transmit
IICn
←
data
IICn
←
data
IICn
←
FFH
Note
IICn
←
FFH
Note
Note
To cancel master wait, write FFH to IICn or set WRELn.
Remark
n = 0, 1