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(When 9-Clock Wait Is Selected for Both Master and Slave) (2/3)
Processing by master device
IICn
ACKDn
STDn
L
SPDn
L
WTIMn
H
ACKEn
H
MSTSn
H
STTn
L
L
SPTn
WRELn
INTIICn
TRCn
L
Receive
Transfer lines
8
9
SCLn
D0
ACK
SDAn
Processing by slave device
IICn
ACKDn
STDn
L
SPDn
L
WTIMn
H
ACKEn
H
MSTSn
L
STTn
L
SPTn
L
L
WRELn
INTIICn
TRCn
H
Transmit
Note To cancel master wait, write FFH to IICn or set WRELn.
Remark
n = 0, 1
332
CHAPTER 10
SERIAL INTERFACE FUNCTION
Figure 10-22. Example of Slave to Master Communication
(b) Data
IICn ← FFH Note
Note
1
2
3
4
D7
D6
D5
D4
IICn ← data
User's Manual U13850EJ6V0UD
5
6
7
8
9
D3
D2
D1
D0
ACK
IICn ← FFH Note
Note
1
2
3
D7
D6
D5
IICn ← data
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