HD6432633 Datasheet, PDF (817/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Start of transmission
End of
transmission
Transition
to software
standby
Exit from
software
standby
TE bit
SCK output pin
Port input/output
TxD output pin Port input/output High output
Port
Start
SCI TxD output
Stop
Port input/output
Port
High output
SCI TxD
output
Figure 16-26 Asynchronous Transmission Using Internal Clock
Start of transmission
End of
transmission
Transition
to software
standby
Exit from
software
standby
TE bit
SCK output pin
Port input/output
TxD output pin _{Port input/output Marking output}
Port
Note: * Initialized by software standby.
SCI TxD output
Last TxD bit held
Port input/output
Port
High output*
SCI TxD
output
Figure 16-27 Synchronous Transmission Using Internal Clock
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