CHAPTER 16 I
2
C BUS
User’s Manual U16896EJ2V0UD
528
Figure 16-21. Example of Slave to Master Communication
(When 8-Clock Wait for Master and 9-Clock Wait for Slave Are Selected) (1/3)
(a) Start condition ~ address
IIC0
ACKD0
STD0
SPD0
WTIM0
H
H
L
L
L
H
L
ACKE0
MSTS0
STT0
L
L
SPT0
WREL0
INTIIC0
TRC0
IIC0
ACKD0
STD0
SPD0
WTIM0
ACKE0
MSTS0
STT0
SPT0
WREL0
INTIIC0
TRC0
SCL0
SDA0
Processing by master device
Transfer lines
Processing by slave device
1
2
3
4
5
6
7
8
9
4
5
6
3
2
1
AD6 AD5 AD4 AD3 AD2 AD1 AD0
R
D4
D3
D2
D5
D6
D7
IIC0
←
address
IIC0
←
FFH
Note
Note
IIC0
←
data
Start condition
ACK
Note
To cancel master wait, write FFH to IIC0 or set WREL0.
<R>