HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 664

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

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