HD64F7045F28V Datasheet, PDF (547/925 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7040 Series

Initialize
1
Start transmitting
Read TDRE bit in SSR
2
No
TDRE = 1?
Yes
Write transmission data to TDR
and clear TDRE bit in SSR to 0
All data transmitted?
3
No
Yes
Read TEND bit in SSR
No
TEND = 1?
Yes
Output break signal?
Yes
Set DR = 0
No
4
Clear TE bit in SCR to 0;
select theTxD pin as an
output port with the PFC
End transmission
Figure 14.5 Sample Flowchart for Transmitting Serial Data
507