upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 277

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

10.3.14 Communication operations
(1)
Master operations
The following is a flow chart of the master operations.
Yes (transmit)
Generate restart condition
or stop condition.
IICE = SPIE = WTIM = 1
Start IIC0 write transfer.
Start IIC0 write transfer.
Select transfer clock.
Data processing
IICCL0
IICC0
INTIIC0 = 1?
INTIIC0 = 1?
INTIIC0 = 1?
ACKD = 1?
ACKD = 1?
TRC = 1?
STT = 1
START
←
←
Yes
Yes
Yes
Yes
No
xxH
xxH
CHAPTER 10
Yes
Figure 10-19. Master Operation Flow Chart
No
No
No
No (receive)
No
User’s Manual U12768EJ4V1UD
SERIAL INTERFACE FUNCTION
Generate stop condition.
(no slave with matching address)
Transfer completed?
Data processing
Start reception.
INTIIC0 = 1?
WREL = 1
ACKE = 0
WTIM = 0
ACKE = 1
Yes
Yes
No
No
; Stop condition detection
; Address transfer completion
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