CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U13850EJ6V0UD
323
The communication reservation flowchart is illustrated below.
Figure 10-18. Communication Reservation Flowchart
DI
SET1 STTn
Define communication
reservation
Wait
Cancel communication
reservation
No
Yes
IICn
← ××
H
EI
MSTSn = 0?
(Communication reservation)
Note
(Generate start condition)
; Sets STT flag (communication reservation).
; Gets wait period set by software (see
Table 10-7
).
; Confirmation of communication reservation
; Clear user flag.
; IICn write operation
; Defines that communication reservation is in effect
(defines and sets user flag to any part of RAM).
Note
The communication reservation operation executes a write to IIC shift register n (IICn) when a stop
condition interrupt request occurs.
Remark
n = 0, 1
Содержание V850/SB1
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