CHAPTER 12 SERIAL INTERFACE FUNCTION
Preliminary User’s Manual U15905EJ1V0UD
401
Figure 12-39. Example of Slave to Master Communication
(When 9-Clock Wait Is Selected for Both Master and Slave) (2/3)
(b) Data
IIC
ACKD
STD
SPD
WTIM
H
H
H
L
L
L
L
L
L
H
H
H
L
L
L
L
L
ACKE
MSTS
STT
SPT
WREL
INTIIC
TRC
IIC
ACKD
STD
SPD
WTIM
ACKE
MSTS
STT
SPT
WREL
INTIIC
TRC
SCL
SDA
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
IIC
←
data
IIC
←
data
IIC
←
FFH
Note
IIC
←
FFH
Note
Note
To cancel slave wait, write FFH to IIC or set WREL.
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