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TSR3—Timer Status Register 3
www.DataSheet4U.com
Bit
7
—
Initial value
1
Read/Write
—
Note: Only 0 can be written, to clear the flag.
*
TCNT3 H/L—Timer Counter 3 H/L
Bit
15
14
Initial value
0
0
Read/Write
R/W
R/W
GRA3 H/L—General Register A3 H/L
Bit
15
14
1
1
Initial value
Read/Write
R/W
R/W
6
5
—
—
—
1
1
—
—
—
Overflow flag
0 [Clearing condition]
Read OVF when OVF = 1, then write 1 in OVF
1 [Setting condition]
TCNT overflowed from H'FFFF to H'0000 or underflowed from
H'0000 to H'FFFF
13
12
11
10
9
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
Complementary PWM mode:
Other modes:
13
12
11
10
9
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
Output compare or input capture register (can be buffered)
780
H'85
4
3
2
—
OVF
1
1
0
—
R/(W)
*
H'86, H'87
8
7
6
5
4
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
up/down counter
up-counter
H'88, H'89
8
7
6
5
4
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
ITU3
1
0
IMFB
IMFA
0
0
R/(W)
*
R/(W)
*
Bit functions are the
same as for ITU0
ITU3
3
2
1
0
0
0
0
0
R/W
R/W
R/W
R/W
ITU3
3
2
1
0
1
1
1
1
R/W
R/W
R/W
R/W
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