HD643303x Hitachi, HD643303x Datasheet - Page 378

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Figure 11-19 shows an example of SCI receive operation.
Transmitting and Receiving Serial Data Simultaneously (Synchronous Mode): Figure 11-20
shows a sample flowchart for transmitting and receiving serial data simultaneously and indicates
the procedure to follow.
Serial data
RDRF
ORER
Serial clock
RXI
request
Bit 7
Figure 11-19 Example of SCI Receive Operation
RXI interrupt handler
reads data in RDR and
clears RDRF flag to 0
Bit 0
Receive direction
1 frame
Bit 7
363
RXI
request
Bit 0
Bit 1
Bit 6
Bit 7
Overrun error,
ERI request