TCW—Timer counter W
H'B3
Watchdog timer
Bit
7
TCW7
0
6
TCW6
0
5
TCW5
0
4
TCW4
0
3
TCW3
0
2
TCW2
0
1
TCW1
0
0
TCW0
0
Initial value
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Count value
TMC—Timer mode register C
H'B4
Timer C
Bit
7
TMC7
0
6
TMC6
0
5
TMC5
0
4
—
1
3
—
1
2
TMC2
0
1
TMC1
0
0
TMC0
0
Initial value
Read/Write
R/W
R/W
R/W
—
—
R/W
R/W
R/W
Clock select
0
1
0
1
0
1
0
Internal clock: ø/8192
Internal clock: ø/2048
Internal clock: ø/512
Internal clock: ø/64
Internal clock: ø/16
Internal clock: ø/4
0
0
1
1
0
0
1
0
0
0
0
1
1
1
Internal clock: øw/4
External event (TMIC): Counting
on rising or falling edge
1
1
1
Counter up/down control
0
0
0
1
TCC is an up-counter
TCC is a down-counter
1
Hardware control of TCC up/down operation by UD pin input
UD pin input high: Down-counter
*
UD pin input low: Up-counter
* Don’t care
Auto-reload function select
0
1
Interval timer function selected
Auto-reload function selected
439
ETC [ ETC ]
