upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 629
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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I
2
C Bus (IIC)
Figure 18-17
No
No
Clear communication mode flag
Communication mode?
Communication mode?
direction flag = 1?
Data processing
Clear ready flag
IICCLn ← XXH
Communication
IICCn ← XXH
IICFn ← XXH
ACKDn = 1?
WRELn = 1
IICn ← data
WTIMn = 1
IICEn = 1
Ready?
START
Slave operation flowchart (1)
The following shows an example of the processing of the slave device by an
INTIICn interrupt (it is assumed that no extension codes are used here).
Preliminary User’s Manual U17566EE1V2UM00
Yes
Yes
Yes
Yes
Yes
No
No
No
Selection of transfer flag
IICFn register setting
No
No
Communication mode?
ACKEn = WTIMn = 1
Transfer completed?
Data processing
Clear ready flag
WRELn = 1
WRELn = 1
ACKEn = 0
Read data
Ready?
Yes
Yes
Yes
No
Chapter 18
629
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