H8S-2258 Datasheet, PDF (714/1071 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2200 Series

Section 15 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 15.40 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
SCI TxD output
Last TxD bit held
Port input/output
Port
High outpu^t*
SCI TxD
output
Note: * Initialized by software standby.
Figure 15.41 Synchronous Transmission Using Internal Clock
Rev. 5.00 Aug 08, 2006 page 628 of 982
REJ09B0054-0500