NEC 78K0 Series User Manual page 473

Figure 17-27. Example of Master to Slave Communication
(When 9-Clock Wait Is Selected for Both Master and Slave) (3/3)
(3) Stop condition
Processing by master device
←
IIC0
IIC0
ACKD0
STD0
SPD0
WTIM0
H
ACKE0 H
MSTS0
STT0
SPT0
WREL0 L
INTIIC0
TRC0 Transmit
H
Transfer lines
1
SCL0
D7 D6
SDA0
Processing by slave device
←
IIC0
IIC0
ACKD0
STD0
SPD0
WTIM0 H
ACKE0 H
MSTS0
L
STT0
L
SPT0
L
Note
WREL0
INTIIC0
Receive
TRC0 L
Note To cancel slave wait, write "FFH" to IIC0 or set WREL0.
CHAPTER 17 SERIAL INTERFACE IIC0
data
2 3 4 5 6 7
D5 D4 D3 D2 D1
FFH Note
Preliminary User's Manual U17260EJ3V1UD
(When SPIE0 = 1)
8 9
D0 ACK
Stop
condition
←
IIC0 FFH Note
Note
(When SPIE0 = 1)
←
IIC0 address
1 2
AD6 AD5
Start
condition
473