upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 628
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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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Chapter 18
628
(3)
Communication direction flag
This flag indicates the direction of communication and is the same as the value
of IICSn.TRCn bit.
The following shows the operation of the main processing block during slave
operation.
Start I
communication is enabled, perform transfer using the communication mode
flag and ready flag (the processing of the stop condition and start condition is
performed by interrupts, conditions are confirmed by flags).
For transmission, repeat the transmission operation until the master device
stops returning ACK signal. When the master device stops returning ACK
signal, transfer is complete.
For reception, receive the required number of data and do not return ACK
signal for the next data immediately after transfer is complete. After that, the
master device generates the stop condition or restart condition. This causes
exit from communications.
Preliminary User’s Manual U17566EE1V2UM00
2
C0n and wait for the communication enabled status. When
I
2
C Bus (IIC)
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