H8S2189R Datasheet, PDF (490/812 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2100 Series

Section 14 Serial Communication Interface (SCI, IrDA)
Start
Initialization
Start transmission
No
ERS = 0?
Yes
No
TEND = 1?
Yes
Write data to TDR and clear
TDRE flag in SSR to 0
Error processing
No
All data transmitted?
Yes
No
ERS = 0?
Yes
No
TEND = 1?
Yes
Clear TE bit in SCR to 0
Error processing
End
Figure 14.28 Sample Transmission Flowchart
Rev. 2.00 Aug. 03, 2005 Page 448 of 766
REJ09B0223-0200