Datasheet

Appendix B Internal I/O Registers
Rev. 6.00 Aug 04, 2006 page 594 of 680
REJ09B0145-0600
TCSRF—Timer Control/Status Register F H'B7 Timer F
Bit
Initial value
Read/Write
Note: * Bits 7, 6, 3, and 2 can only be written with 0, for flag clearing.
7
OVFH
0
R/(W)
*
6
CMFH
0
R/(W)
*
5
OVIEH
0
R/W
0
CCLRL
0
R/W
2
CMFL
0
R/(W)
*
1
OVIEL
0
R/W
4
CCLRH
0
R/W
Compare match flag H
0
[Clearing condition]
After reading CMFH = 1, cleared by writing 0 to CMFH
1
[Setting condition]
Set when the TCFH value matches the OCRFH value
Timer overflow flag H
0
[Clearing condition]
After reading OVFH = 1, cleared by writing 0 to OVFH
1 [Setting condition]
Set when TCFH overflows from H'FF to H'00
Compare match flag L
0
[Clearing condition]
After reading CMFL = 1, cleared by writing 0 to CMFL
1
[Setting condition]
Set when the TCFL value matches the OCRFL value
Timer overflow flag L
0
[Clearing condition]
After reading OVFL = 1, cleared by writing 0 to OVFL
1
[Setting condition]
Set when TCFL overflows from H'FF to H'00
Counter clear H
0
16-bit mode: TCF clearing by compare match is disabled
8-bit mode: TCFH clearing by compare match is disabled
1
16-bit mode: TCF clearing by compare match is enabled
8-bit mode: TCFH clearing by compare match is enabled
Timer overflow interrupt enable H
0
TCFH overflow interrupt request is disabled
1 TCFH overflow interrupt request is enabled
Timer overflow interrupt enable L
Counter clear L
0
TCFL overflow interrupt request is disabled
1 TCFL overflow interrupt request is enabled
0 TCFL clearing by compare match is disabled
1 TCFL clearing by compare match is enabled
3
OVFL
0
R/(W)
*