r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 938

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 1.00 Sep. 19, 2008 Page 908 of 1342
REJ09B0467-0100
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.