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The communication reservation flow chart is illustrated below.
(Communication reservation)
Note The communication reservation operation executes a write to the IIC shift register (IIC) when a stop
condition interrupt request occurs.
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CHAPTER 12 SERIAL INTERFACE FUNCTION
Figure 12-35. Communication Reservation Flow Chart
DI
SET1 STT
Define communication
reservation
Wait
Note
MSTS = 0?
Yes
No
(Generate start condition)
Cancel communication
reservation
××H
IIC
EI
Preliminary User's Manual U15905EJ1V0UD
; Sets STT flag (communication reservation).
; Defines that communication reservation is in effect
(defines and sets user flag to any part of RAM).
; Secures wait period set by software (see Table 12-10).
; Confirmation of communication reservation
; Clear user flag.
; IIC write operation
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