NEC 78K0 Series User Manual page 471

Figure 17-27. Example of Master to Slave Communication
(When 9-Clock Wait Is Selected for Both Master and Slave) (1/3)
(1) Start condition ~ address
Processing by master device
←
IIC0
IIC0
ACKD0
STD0
SPD0
WTIM0
H
ACKE0 H
MSTS0
STT0
SPT0
L
WREL0
L
INTIIC0
TRC0 H Transmit
Transfer lines
1
SCL0
AD6 AD5 AD4 AD3 AD2 AD1 AD0
SDA0
Start condition
Processing by slave device
IIC0
ACKD0
STD0
SPD0
WTIM0 H
H
ACKE0
MSTS0 L
STT0
L
SPT0
L
WREL0
INTIIC0
TRC0 L
Receive
Note To cancel slave wait, write "FFH" to IIC0 or set WREL0.
CHAPTER 17 SERIAL INTERFACE IIC0
address
2 3 4 5 6
(When EXC0 = 1)
Preliminary User's Manual U17260EJ3V1UD
7 8 9
W ACK
←
IIC0 data
1 2 3 4
D7 D6 D5 D4
←
Note
IIC0 FFH
Note
471