H83802_10 Datasheet, PDF (323/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 10 Serial Communication Interface 3 (SCI3)
Serial
clock
Serial
data
Bit 0 Bit 1
Bit 7
Bit 0
Bit 1
Bit 6
Bit 7
TDRE
TEND
1 frame
1 frame
LSI
TXI interrupt
operation request
generated
User
processing
TDRE flag
cleared
to 0
Data written
to TDR
TXI interrupt request generated
TEI interrupt request
generated
Figure 10.10 Example of SCI3 Operation in Transmission in Clocked Synchronous Mode
Rev. 7.00 Mar. 08, 2010 Page 291 of 510
REJ09B0024-0700