Datasheet
Section 15 Timer RC 
REJ09B0465-0300 Rev. 3.00     Page 453 of 982 
Sep 17, 2010     
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group 
15.2.6  Timer RC I/O Control Register 0 (TRCIOR0) 
b7
⎯
1
b6
IOB2
0
b5
0
b4
0
b3
⎯
1
b2
IOA2
0
b1
0
b0
0
H'FFFF8E
IOB[1:0] IOA[1:0]
Bit:
Address: 
Value after reset:
Bit Symbol Bit Name  Description  R/W 
7  ⎯  Reserved  This bit is read as 1. The write value should be 1.  ⎯ 
6  IOB2  I/O control B2  Selects the GRB function. 
0: GRB functions as an output compare register 
1: GRB functions as an input capture register 
R/W 
5, 4  IOB[1:0]  I/O control B1 
and B0 
When IOB2 = 0, 
00: No output on compare match 
01: 0 output to the FTIOB pin on compare match of 
GRB 
10: 1 output to the FTIOB pin on compare match of 
GRB 
11: Toggle output to the FTIOB pin on compare 
match of GRB 
When IOB2 = 1, 
00: Input capture to GRB at rising edge at the FTIOB 
pin 
01: Input capture to GRB at falling edge at the FTIOB 
pin 
1X: Input capture to GRB at rising and falling edges 
of the FTIOB pin 
R/W 
3  ⎯  Reserved  This bit is read as 1. The write value should be 1.  ⎯ 
2 IOA2 
I/O control A2 
Selects the GRA function. 
0: GRA functions as an output compare register 
1: GRA functions as an input capture register 
R/W 










