Datasheet

Appendix B Internal I/O Registers
Rev. 4.00 Jun 06, 2006 page 923 of 1004
REJ09B0301-0400
TCSR—Timer Control/Status Register H'FF91 FRT
7
ICFA
0
R/(W)
*
6
ICFB
0
R/(W)
*
5
ICFC
0
R/(W)
*
4
ICFD
0
R/(W)
*
3
OCFA
0
R/(W)
*
0
CCLRA
0
R/W
2
OCFB
0
R/(W)
*
1
OVF
0
R/(W)
*
Bit
Initial value
Read/Write
Input capture flag A
Note: *
Only 0 can be written in bits 7 to 1, to clear the flags.
0 [Clearing condition]
Read ICFA when ICFA = 1, then write 0 in ICFA
1 [Setting condition]
When an input capture signal causes the FRC value to be transferred to ICRA
Input capture flag B
0
[Clearing condition]
Read ICFB when ICFB = 1, then write 0 in ICFB
1 [Setting condition]
When an input capture signal causes the FRC value to be transferred to ICRB
Input capture flag C
0
[Clearing condition]
Read ICFC when ICFC = 1, then write 0 in ICFC
1 [Setting condition]
When an input capture signal is received
Input capture flag D
0
[Clearing condition]
Read ICFD when ICFD = 1, then write 0 in ICFD
1 [Setting condition]
When an input capture signal is received
Counter clear A
0
FRC clearing is
disabled
1 FRC is cleared at
compare match A
Timer overflow flag
0
[Clearing condition]
Read OVF when OVF = 1,
then write 0 in OVF
1 [Setting condition]
When FRC changes from
H'FFFF to H'0000
Output compare flag B
0
[Clearing condition]
Read OCFB when OCFB = 1, then write 0 in OCFB
1 [Setting condition]
When FRC = OCRB
Output compare flag A
0
[Clearing condition]
Read OCFA when OCFA = 1, then write 0 in OCFA
1 [Setting condition]
When FRC = OCRA