HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 836

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 15 Serial Communication Interface (SCI, IrDA)
Rev.7.00 Mar. 18, 2009 page 768 of 1136
REJ09B0109-0700
Figure 15.39 shows a sample flowchart for mode transition during reception.
Read TEND flag in SSR
<Start of transmission>
Transition to software
Figure 15.36 Sample Flowchart for Mode Transition during Transmission
Exit from software
operating mode?
<Transmission>
standby mode
standby mode
Yes
Yes
Yes
transmitted?
Initialization
TEND = 1
Change
All data
TE = 0
No
No
No
[1]
[2]
[3]
TE = 1
[1] Data being transmitted is interrupted.
[2] If TIE and TEIE are set to 1, clear
[3] Includes module stop mode.
After exiting software standby mode,
normal CPU transmission is possible
by setting TE to 1, reading SSR,
writing TDR, and clearing TDRE to 0,
but note that if the DTC has been
activated, the remaining data in
DTCRAM will be transmitted when
TE and TIE are set to 1.
them to 0 in the same way.