SH7750_08 Datasheet, PDF (777/1162 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 15 Serial Communication Interface (SCI)
1
Serial
data
Start
bit
0 D0
Data
Parity Stop Start
bit bit bit
Data
Parity Stop
bit bit
D1
D7 0/1 1 0 D0 D1
D7 0/1 1
1
Idle state
(mark state)
TDRE
TEND
TXI interrupt
TXI interrupt
request
request
Data written to SCTDR1
and TDRE flag cleared to
0 by TXI interrupt handler
One frame
TEI interrupt
request
Figure 15.9 Example of Transmit Operation in Asynchronous Mode
(Example with 8-Bit Data, Parity, One Stop Bit)
Serial Data Reception (Asynchronous Mode): Figure 15.10 shows a sample flowchart for serial
reception.
Use the following procedure for serial data reception after enabling the SCI for reception.
Rev.7.00 Oct. 10, 2008 Page 693 of 1074
REJ09B0366-0700