Datasheet
Section 15 Serial Communication Interface (SCI, IrDA) 
Page 868 of 1384    R01UH0310EJ0500 Rev. 5.00 
 Sep 25, 2012 
H8S/2426, H8S/2426R, H8S/2424 Group
15.2  Input/Output Pins 
Table 15.1 shows the pin configuration of the serial communication interface. 
Table 15.1  Pin Configuration 
Channel Pin Name
*
 I/O  Function 
SCK0  I/O  Channel 0 clock input/output 
RxD0/IrRxD  Input  Channel 0 receive data input (normal/IrDA) 
0 
TxD0/IrTxD  Output  Channel 0 transmit data output (normal/IrDA) 
SCK1  I/O  Channel 1 clock input/output 
RxD1  Input  Channel 1 receive data input 
1 
TxD1  Output  Channel 1 transmit data output 
SCK2  I/O  Channel 2 clock input/output 
RxD2  Input  Channel 2 receive data input 
2 
TxD2  Output  Channel 2 transmit data output 
SCK3  I/O  Channel 3 clock input/output 
RxD3  Input  Channel 3 receive data input 
3 
TxD3  Output  Channel 3 transmit data output 
SCK4  I/O  Channel 4 clock input/output 
RxD4  Input  Channel 4 receive data input 
4 
TxD4  Output  Channel 4 transmit data output 
Note:  *  Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the 
channel designation. 










