upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 275
upd70f3017ay
Manufacturer Part Number
upd70f3017ay
Description
V850/sa1tm 32-/16-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3017AY.pdf
(492 pages)
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The communication reservation flow chart is illustrated below.
Note The communication reservation operation executes a write to IIC shift register 0 (IIC0) when a stop
(Communication reservation)
condition interrupt request occurs.
Figure 10-18. Communication Reservation Flow Chart
Yes
Note
CHAPTER 10
Cancel communication
reservation
Define communication
reservation
MSTS = 0?
IIC0
SET1 STT
Wait
User’s Manual U12768EJ4V1UD
DI
EI
←
No
(Generate start condition)
xxH
SERIAL INTERFACE FUNCTION
; Sets STT flag (communication reservation).
; Defines that communication reservation is in effect
; Gets wait period set by software (see Table 10-6).
; Confirmation of communication reservation
; Clear user flag.
; IIC0 write operation
(defines and sets user flag to any part of RAM).
275
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