CHAPTER 16 I
2
C BUS
User’s Manual U16896EJ2V0UD
525
Figure 16-20. Example of Master to Slave Communication
(When 9-Clock Wait Is Selected for Both Master and Slave) (1/3)
(a) Start condition ~ address
IIC0
ACKD0
STD0
SPD0
WTIM0
H
H
L
L
L
L
H
H
H
L
L
ACKE0
MSTS0
STT0
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
3
2
1
AD6 AD5 AD4 AD3 AD2 AD1 AD0
W
ACK
D4
D5
D6
D7
IIC0
←
address
IIC0
←
data
IIC0
←
FFH
Transmit
Start condition
Receive
(when EXC0 = 1)
Note
Note
Note
To cancel slave wait, write FFH to IIC0 or set WREL0.
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Содержание ?PD703302
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