Hardware manual

Rev. 3.0, 09/98, page 326 of 361
FRC (H and L)Free-Running Counter H'FF92, H'FF93 FRT
Bit
Initial value
Read/Write
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
0
0
R/W
2
0
R/W
1
0
R/W
Count value
OCRA (H and L)Output Compare Register A H'FF94, H'FF95 FRT
Bit
Initial value
Read/Write
7
1
R/W
6
1
R/W
5
1
R/W
4
1
R/W
3
1
R/W
0
1
R/W
2
1
R/W
1
1
R/W
Continually compared with FRC. OCFA is set to “1” when OCRA=FRC.
OCRB (H and L)Output Compare Register B H'FF94, H'FF95 FRT
Bit
Initial value
Read/Write
7
1
R/W
6
1
R/W
5
1
R/W
4
1
R/W
3
1
R/W
0
1
R/W
2
1
R/W
1
1
R/W
Continually compared with FRC. OCFB is set to “1” when OCRB=FRC.