HD64F7051SFJ20V Datasheet, PDF (440/843 Pages) Renesas Technology Corp – Hardware Manual Renesas 32-Bit RISC

Section 13 Serial Communication Interface (SCI)
Initialize
1
Start transmitting
Read TDRE flag in SSR
2
No
TDRE = 1?
Yes
Write transmit data in TDR and
clear TDRE flag to 0 in SSR
All data transmitted?
Yes
Read TEND flag in SSR
TEND = 1?
Yes
Clear TE bit to 0 in SCR
No
3
No
End
Figure 13.18 Sample Flowchart for Serial Transmitting
Rev. 5.00 Jan 06, 2006 page 418 of 818
REJ09B0273-0500