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/1520 Series Hardware Manual

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