HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 661

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

Figure 14.4 shows a sample SCI initialization flowchart.
Set CKE1 and CKE0 bits in SCR
SCR to 1, and set RIE, TIE, TEIE,
Clear TE and RE bits in SCR to 0
and MPIE bits as necessary
Set data transfer format in
<Initialization completed>
1-bit interval elapsed?
Start of initialization
Set TE or RE bit in
SMR and SCMR
Set value in BRR
(TE, RE bits 0)
Figure 14.4 Sample SCI Initialization Flowchart
Yes
Wait
No
[1]
[2]
[3]
[4]
Section 14 Serial Communication Interface (SCI)
[1] Set the clock selection in SCR.
[2] Set the data transfer format in SMR
[3] Write a value corresponding to the
[4] Wait at least one bit interval, then
Rev.6.00 Sep. 27, 2007 Page 631 of 1268
Be sure to clear bits RIE, TIE,
TEIE, and MPIE, and bits TE and
RE, to 0.
When the clock is selected in
asynchronous mode, it is output
immediately after SCR settings are
made.
and SCMR.
bit rate to BRR. (Not necessary if
an external clock is used.)
set the TE bit or RE bit in SCR to 1.
Also set the RIE, TIE, TEIE, and
MPIE bits as necessary.
Setting the TE or RE bit enables
the TxD or RxD pin to be used.
REJ09B0220-0600