UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 525

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(3) Stop condition
Notes 1. To cancel wait, write “FFH” to IIC0 or set WREL0.
(When 8-Clock and 9-Clock Wait Is Selected for Master, 9-Clock Wait Is Selected for Slave) (3/3)
WREL0
INTIIC0
WREL0
INTIIC0
ACKD0
ACKE0
MSTS0
ACKD0
ACKE0
MSTS0
WTIM0
WTIM0
Processing by master device
Transfer lines
Processing by slave device
SPD0
TRC0
SDA0
SPD0
TRC0
STD0
STD0
STT0
SPT0
SCL0
STT0
SPT0
IIC0
IIC0
2. Write data to IIC0, not setting WREL0, in order to cancel a wait state during slave transmission.
3. If a wait state during slave transmission is canceled by setting WREL0, TRC0 will be cleared.
Receive
Transmit
H
H
L
L
L
Figure 14-28. Example of Slave to Master Communication
IIC0
D7
1
data Note 2
D6
2
CHAPTER 14 SERIAL INTERFACE IIC0
D5
Preliminary User’s Manual U19748EJ1V0UD
3
D4
4
D3
5
D2
6
D1
7
D0
8
IIC0
NACK
Note 1
9
FFH Note 1
IIC0
Note 3
Notes 1, 3
condition
FFH Note 1
Stop
(When SPIE0 = 1)
(When SPIE0 = 1)
Receive
IIC0
condition
Start
address
AD6
1
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