SH7280 Datasheet, PDF (833/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 16 Serial Communication Interface (SCI)
Figure 16.13 shows an example of SCI receive operation.
Transfer direction
Synchronization
clock
Serial data
Bit 7
Bit 0
Bit 7
Bit 0
Bit 1
Bit 6 Bit 7
RDRF
ORER
RXI interrupt Data read from SCRDR and RXI interrupt
request
RDRF flag cleared to 0 by RXI request
interrupt handler
One frame
Figure 16.13 Example of SCI Receive Operation
ERI interrupt request
by overrun error
• Transmitting and Receiving Serial Data Simultaneously (Clock Synchronous Mode)
Figure 16.14 shows a sample flowchart for transmitting and receiving serial data simultaneously.
Use the following procedure for serial data transmission and reception after enabling the SCI for
transmission and reception.
Rev. 1.00 Jun. 26, 2008 Page 803 of 1692
REJ09B0393-0100