h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 479

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Figure 15.6 shows an example of the operation for transmission in asynchronous mode.
TDRE
TEND
TXI interrupt
request generated
1
Figure 15.6 Example of Operation in Transmission in Asynchronous Mode
Start
bit
0
Data written to TDR and
TDRE flag cleared to 0 in
TXI interrupt handling routine
D0
(Example with 8-Bit Data, Parity, One Stop Bit)
D1
1 frame
Data
D7
Parity
bit
0/1
TXI interrupt
request generated
Section 15 Serial Communication Interface (SCI, IrDA)
Stop
bit
1
Start
bit
0
D0
Rev. 4.00 Jun 06, 2006 page 425 of 1004
D1
Data
D7
Parity
bit
0/1
TEI interrupt
request generated
REJ09B0301-0400
Stop
bit
1
Idle state
(mark state)
1