Datasheet

Section 14 Serial Communication Interface (SCI)
Rev.6.00 Sep. 27, 2007 Page 634 of 1268
REJ09B0220-0600
Figure 14.6 shows an example of the operation for transmission in asynchronous mode.
TDRE
TEND
0
1 frame
D0 D1 D7 0/1 1 0 D0 D1 D7 0/1 1
1 1
DataStart
bit
Parity
bit
Stop
bit
Start
bit
Data Parity
bit
Stop
bit
TXI interrupt
request generated
Data written to TDR and
TDRE flag cleared to 0 in
TXI interrupt handling routine
TEI interrupt
request generated
Idle state
(mark state)
TXI interrupt
request generated
Figure 14.6 Example of Transmit Operation in Asynchronous Mode
(Example with 8-Bit Data, Parity, One Stop Bit)