R01UH0823EJ0100 Rev.1.00
Page 1026 of 1823
Jul 31, 2019
RX23W Group
33. Serial Communications Interface (SCIg, SCIh)
Figure 33.10
Example of Operation for Serial Transmission in Asynchronous Mode (1)
(with 8-Bit Data, Parity, 1 Stop Bit, CTS Function Not Used, at the Beginning of Transmission)
Figure 33.11
Example of Operation for Serial Transmission in Asynchronous Mode (2)
(with 8-Bit Data, Parity, 1 Stop Bit, CTS Function Used, at the Beginning of Transmission)
TXI interrupt flag
(IRn in ICU
*1
)
1 frame
Data
Parity bit Stop bit
Start bit
TXI interrupt request
generated
TXI interrupt
request generated
Data written to TDR in
TXI interrupt handling
routine
SSR.TEND flag
0
D0 D1
D7 0/1
D7 0/1 1
0
D0
1
D1
Data written to TDR in
TXI interrupt handling
routine
SCR.TE bit
0
Data written to TDR in
TXI interrupt handling
routine
Note 1. Refer to section 15, Interrupt Controller (ICUb) for details on the corresponding interrupt vector number.
TXI interrupt flag
(IRn in ICU
*1
)
1 frame
Data
Parity bit
Stop bit
Start bit
Idle state
(mark state)
TXI interrupt request
generated
TXI interrupt request
generated
Data written to TDR
in TXI interrupt
handling routine
SSR.TEND flag
0 D0 D1
D7 0/1
D7 0/1 1
0 D0
1
D1
Data written to TDR in TXI
interrupt handling routine
SCR.TE bit
CTSn# pin
0
Data written to TDR in TXI
interrupt handling routine
Note 1. Refer to section 15, Interrupt Controller (ICUb) for details on the corresponding interrupt vector number.