HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 482

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 12 Serial Communication Interface (SCI)
Figure 12.6 shows an example of the operation for transmission in asynchronous mode.
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TXI interrupt
request generated
1
Figure 12.6 Example of Operation in Transmission in Asynchronous Mode
Start
bit
0
Data written to TDR and
TDRE flag cleared to 0 in
TXI interrupt service 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