R01UH0822EJ0100 Rev.1.00
Page 661 of 1041
Jul 31, 2019
RX13T Group
23. Serial Communications Interface (SCIg, SCIh)
Figure 23.26
Example of Serial Data Transmission in Clock Synchronous Mode from the Middle of
Transmission until Transmission Completion
Synchronization
clock
1 frame
Serial data
TXI interrupt
request
generated
TEI interrupt
request
generated
TXI interrupt
request
generated
TXI interrupt flag
(IRn in ICU*
1
)
Data written to TDR in
TXI interrupt handling
routine
SSR.TEND flag
(TIE = 1)
(TIE = 0)
Bit 0
Bit 1
Bit 7
Bit 0
Bit 1
Bit 7
Bit 0
Bit 1
Bit 7
Data written to TDR in TXI
interrupt handling routine
(Set the TIE bit to 0 and the
TEIE bit to 1 after writing the
last data)
Note 1. Refer to section 14, Interrupt Controller (ICUb) for details on the corresponding interrupt vector number.