NEC 78K0 Series User Manual page 472

(When 9-Clock Wait Is Selected for Both Master and Slave) (2/3)
(2) Data
Processing by master device
IIC0
ACKD0
STD0 L
SPD0
L
WTIM0
H
ACKE0 H
H
MSTS0
STT0
L
L
SPT0
WREL0 L
INTIIC0
TRC0 Transmit
H
Transfer lines
8 9
SCL0
D0 ACK
SDA0
Processing by slave device
IIC0
ACKD0
STD0 L
SPD0
L
WTIM0 H
H
ACKE0
MSTS0
L
STT0 L
SPT0
L
WREL0
INTIIC0
Receive
TRC0 L
Note To cancel slave wait, write "FFH" to IIC0 or set WREL0.
472
CHAPTER 17 SERIAL INTERFACE IIC0
Figure 17-27. Example of Master to Slave Communication
←
IIC0 data
1 2 3 4 5
D7 D6 D5 D4 D3
←
IIC0 FFH Note
Note
Preliminary User's Manual U17260EJ3V1UD
6 7 8 9
D2 D1 D0 ACK
←
IIC0 data
1 2 3
D7 D6 D5
←
IIC0 FFH Note
Note