HD64F3048F16 Datasheet, PDF (534/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 13 Serial Communication Interface
Serial clock
Receive direction
Serial data
RDRF
Bit 7 Bit 0
Bit 7 Bit 0 Bit 1
Bit 6 Bit 7
ORER
RXI
request
RXI interrupt
handler reads
data in RDR
and clears
RDRF flag to 0
1 frame
RXI
request
Overrun error,
ERI request
Figure 13.19 Example of SCI Receive Operation
Transmitting and Receiving Serial Data Simultaneously (Synchronous Mode): Figure 13.20
shows a sample flowchart for transmitting and receiving serial data simultaneously and indicates
the procedure to follow.
Rev. 3.00 Sep 27, 2006 page 506 of 872
REJ09B0325-0300