R01UH0822EJ0100 Rev.1.00
Page 720 of 1041
Jul 31, 2019
RX13T Group
23. Serial Communications Interface (SCIg, SCIh)
Figure 23.79
Example of Flowchart for Transition to Software Standby Mode during Reception
23.13.10 External Clock Input in Clock Synchronous Mode and Simple SPI Mode
In clock synchronous mode and simple SPI mode, the external clock SCKn must be input as follows:
High-pulse period, low-pulse period = 2 PCLK cycles or more, period = 6 PCLK cycles or more
Start data reception
Initialization
SCR.RE = 1
SCR.RE = 0
Read receive data in RDR
Make transition to software standby mode
Cancel software standby mode
No
No
Yes
Yes
RXI interrupt
Change operating mode?
Data reception
[ 1 ]
[ 2 ]
[ 1 ] Data being received is invalid.
[ 2 ] Setting for the module stop state is included.