NEC V854 UPD703006 User Manual page 278

32/16-bit single-chip microcontroller hardware
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(2) Slave operation
The following shows the slave communication procedure.
START
IICC ← xxH
IICE = 1
INTIIC = 1?
EXC = 1?
No
COI = 1?
Yes
TRC = 1?
Yes
WTIM = 1
IIC write
Transfer starts
INTIIC = 1?
Data processing
ACKD = 1?
Generates
restart condition or
stop condition
278
CHAPTER 8 SERIAL INTERFACE FUNCTION
Figure 8-26. Slave Operation Procedure
No
Yes
Yes
Joining
No
communication?
No
No
Yes
Yes
No
User's Manual U11969EJ3V0UM00
No
Yes
LREL = 1
WTIM = 0
ACKE = 1
WREL = 1
Reception starts
INTIIC = 1?
Yes
Data processing
Transfer ends?
Yes
ACKE = 0
No
No

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