Datasheet
Section 15 Serial Communication Interface (SCI, IrDA) 
R01UH0310EJ0500 Rev. 5.00    Page 921 of 1384 
Sep 25, 2012     
H8S/2426, H8S/2426R, H8S/2424 Group 
Transfer direction
Bit 0
Serial data
Serial clock
1 frame
TDRE
TEND
Bit 1 Bit 7 Bit 0 Bit 1 Bit 7Bit 6
Data written to TDR
and TDRE flag
cleared to 0 in TXI
interrupt handling routine
TEI interrupt
request generated
TXI interrupt
request generated
TXI interrupt
request generated
Figure 15.16 Sample SCI Transmission Operation in Clocked Synchronous Mode 










