Renesas RX100 Series User Manual page 718

RX13T Group
Data transmission
All data transmitted?
Yes
Read TEND flag in SSR
SSR.TEND = 1
Yes
Make the I/O port function settings
SCR.TE bit = 0
Make transition to software standby mode
Cancel software standby mode
Change operating mode?
Yes
Initialization
Start data transmission
Figure 23.76 Example of Flowchart for Transition to Software Standby Mode during Transmission
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
[ 1 ]
No
[ 1 ]
No
[ 2 ]
[ 3 ]
[ 2 ]
[ 4 ]
[ 3 ]
[ 4 ]
No
SCR.TE = 1
Make the I/O port function settings
23. Serial Communications Interface (SCIg, SCIh)
Data being transmitted is lost halfway. Data can be
normally transmitted from the CPU by setting the
TE bit in SCR to 1, reading SSR, and writing data to
TDR after canceling software standby mode.
However, if the DTC has been activated, the data
remaining in the DTC will be transmitted when both
the TE and TIE bits in SCR are set to 1.
Make the I/O port function settings to switch the
TXDn pin to operate as a general I/O port.
Set the TIE and TEIE bits in the SCR if they are
currently set to 1.
This includes the setting for the module stop state.
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