Figure 12.35 Port Pin States During Mode Transition (Internal Clock, Asynchronous Transmission); Figure 12.36 Port Pin States During Mode Transition (Internal Clock, Clocked Synchronous Transmission) - Renesas H8SX/1500 Series Hardware Manual

Section 12 Serial Communication Interface (SCI)
TE bit
SCK
output pin
TxD
Port
input/output
output pin
Port
Figure 12.35 Port Pin States during Mode Transition
TE bit
SCK
output pin
TxD
Port
input/output
output pin
Port
Note: * Initialized in software standby mode
Figure 12.36 Port Pin States during Mode Transition
Rev. 3.00 Mar. 14, 2006 Page 446 of 804
REJ09B0104-0300
Transmission start
High output Start
SCI TxD output
(Internal Clock, Asynchronous Transmission)
Transmission start
Marking output
SCI TxD output
(Internal Clock, Clocked Synchronous Transmission)
Transition to
software standby
Transmission end
mode
Stop
Transition to
Transmission end
software standby
mode
Last TxD bit retained
Software standby
mode canceled
Port
input/output
Port input/output High output
SCI
Port
TxD output
Software standby
mode canceled
Port
input/output
Port input/output High output*
SCI
Port
TxD output