Renesas H8S Family Hardware Manual page 530

Section 13 Serial Communication Interface (SCI)
No
No
No
Rev. 1.00 Mar. 12, 2008 Page 482 of 1178
REJ09B0403-0100
Start
Initialization
Start transmission
ERS = 0 ?
Yes
TEND = 1 ?
Yes
Write data to TDR and clear
TDRE flag in SSR to 0
All data transmitted?
Yes
ERS = 0 ?
Yes
TEND = 1 ?
Yes
Clear TE bit in SCR to 0
End
Figure 13.28 Sample Transmission Flowchart
No
Error processing
No
Error processing