D12320VF25V Datasheet, PDF (530/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 12 Serial Communication Interface (SCI)
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 12.24 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 12.25 Synchronous Transmission Using Internal Clock
Rev.7.00 Feb. 14, 2007 page 496 of 1108
REJ09B0089-0700